首页 > 最新文献

Microelectronics Reliability最新文献

英文 中文
Design of single ended 9T SRAM cell with improved read performance and expanded write margin for aerospace applications 设计单端9T SRAM单元,具有改进的读取性能和扩展的写入余量,用于航空航天应用
IF 1.9 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2026-01-22 DOI: 10.1016/j.microrel.2026.115998
Saloni Bansal, V.K. Tomar
Space radiation including photons, heavy ions, neutrons and α-particles poses significant challenges to the stability and reliability of memory circuits. These high-energy particles can penetrate into the semiconductor materials and interact causing charge deposition and ionization tracks that can lead to data corruption, soft errors, or even permanent failures in extreme cases. As transistor sizes shrink, the integration density of the memory circuits, such as static random-access memory (SRAM) cells increase, making them more susceptible to single-event upsets (SEUs). 6T SRAM cell is more prone to soft errors, where unintended bit flip can occur due to external radiation, resulting in potential reliability issues during memory operations. To mitigate such issues, this paper proposed, a novel radiation hardened 9T SRAM cell to improve soft error rate. The performance of the proposed 9T SRAM cell is evaluated at 45 nm technology node and compared with previously reported SRAM cells, such as 6T, TA8T, 9T, 11T, 10T, 12T, WFC12T, GRNFET9T and PNT9T SRAM cell configurations across a range of supply voltages from 0.5V to 1V. The proposed 9T SRAM cell operates in a single-ended read and write mode and enabling efficient read and write operations. Its read stability shows an improvement by 1.96×/1.83×/1.02×/1.91×/1.02×/1.01×/2.06×/1.43× as compared to conventional 6T, TA8T, 9T, 11T,10T, WFC12T, GRNFET9T and PNT9T SRAM cells, respectively, at 1 V supply voltage. The critical charge in proposed 9T SRAM cell is 2.5×/2.35×/1.14×/1.33×/1.19×/1.08×/2.47×/1.11×/1.11× improved as compared to 6T/TA8T/9T/11T/10T/12T/WFC12T/GRNFET9T/PNT9T SRAM cells. In addition to this, proposed 9T cell has 1.13×/1.06×/1.95×/1.20×/1.04×/1.04×/1.12×/1.05×1.20× less read access time than conv.6T/TA8T/9T/11T/10T/12T/WFC12T GRNFET9T/PNT9T SRAM cells.
Moreover, Ion/Ioff ratio in proposed 9T SRAM cell is 3.0×/2.98×/4.26×/3.01×/3.21×/1.13×/3.2×/3.0×/3.42× higher than conv.6T/TA8T/9T/11T/10T/12T/WFC12T/GRNFET9T/PNT9T SRAM cells. The Monte Carlo simulation is conducted with 4000 random samples to analyze the impact of process variations on read power and read current. The overall performance and soft-error resilience of the proposed 9T SRAM cell are investigated with the ratio of reliability and stability to energy product (RSEAP). This highest RSEAP value of proposed 9T SRAM cell makes its suitability for aerospace applications.
包括光子、重离子、中子和α粒子在内的空间辐射对存储电路的稳定性和可靠性提出了重大挑战。这些高能粒子可以渗透到半导体材料中并相互作用,导致电荷沉积和电离轨迹,从而导致数据损坏、软错误,甚至在极端情况下导致永久故障。随着晶体管尺寸的缩小,存储电路(如静态随机存取存储器(SRAM)单元)的集成密度增加,使它们更容易受到单事件干扰(seu)的影响。6T SRAM单元更容易发生软错误,其中由于外部辐射可能发生意外的位翻转,从而导致存储操作期间潜在的可靠性问题。为了解决这些问题,本文提出了一种新型的辐射硬化9T SRAM单元,以提高软错误率。在45 nm技术节点上评估了所提出的9T SRAM电池的性能,并与先前报道的SRAM电池(如6T, TA8T, 9T, 11T, 10T, 12T, WFC12T, GRNFET9T和PNT9T SRAM电池配置)在0.5V至1V的电源电压范围内进行了比较。所提出的9T SRAM单元以单端读写模式运行,实现高效的读写操作。在1 V电压下,与传统的6T、TA8T、9T、11T、10T、WFC12T、GRNFET9T和PNT9T SRAM电池相比,其读取稳定性分别提高了1.96×/1.83×/1.02×/1.91×/1.02×/ 1.06 ×/1.43×。与6T/TA8T/9T/11T/10T/12T/WFC12T/GRNFET9T/PNT9T SRAM电池相比,9T SRAM电池的临界电荷提高了2.5×/2.35×/1.14×/1.33×/1.19×/1.08×/2.47×/1.11×/1.11×。除此之外,所提出的9T单元具有1.13×/1.06×/1.95×/1.20×/1.04×/1.04×/1.12×/1.05×1.20×的读访问时间比con . 6t /TA8T/9T/11T/10T/12T/WFC12T GRNFET9T/PNT9T SRAM单元少。此外,所提出的9T SRAM电池的离子/断比比为3.0×/2.98×/4.26×/3.01×/3.21×/1.13×/3.2×/3.0×/3.42×,高于conv.6T/TA8T/9T/11T/10T/12T/WFC12T/GRNFET9T/PNT9T SRAM电池。利用4000个随机样本进行蒙特卡罗仿真,分析工艺变化对读功率和读电流的影响。利用可靠性、稳定性与能量积比(RSEAP)对所提出的9T SRAM单元的整体性能和软错误弹性进行了研究。所提出的9T SRAM单元的最高RSEAP值使其适合航空航天应用。
{"title":"Design of single ended 9T SRAM cell with improved read performance and expanded write margin for aerospace applications","authors":"Saloni Bansal,&nbsp;V.K. Tomar","doi":"10.1016/j.microrel.2026.115998","DOIUrl":"10.1016/j.microrel.2026.115998","url":null,"abstract":"<div><div>Space radiation including photons, heavy ions, neutrons and α-particles poses significant challenges to the stability and reliability of memory circuits. These high-energy particles can penetrate into the semiconductor materials and interact causing charge deposition and ionization tracks that can lead to data corruption, soft errors, or even permanent failures in extreme cases. As transistor sizes shrink, the integration density of the memory circuits, such as static random-access memory (SRAM) cells increase, making them more susceptible to single-event upsets (SEUs). 6T SRAM cell is more prone to soft errors, where unintended bit flip can occur due to external radiation, resulting in potential reliability issues during memory operations. To mitigate such issues, this paper proposed, a novel radiation hardened 9T SRAM cell to improve soft error rate. The performance of the proposed 9T SRAM cell is evaluated at 45 nm technology node and compared with previously reported SRAM cells, such as 6T, TA8T, 9T, 11T, 10T, 12T, WFC12T, GRNFET9T and PNT9T SRAM cell configurations across a range of supply voltages from 0.5V to 1V. The proposed 9T SRAM cell operates in a single-ended read and write mode and enabling efficient read and write operations. Its read stability shows an improvement by 1.96×/1.83×/1.02×/1.91×/1.02×/1.01×/2.06×/1.43× as compared to conventional 6T, TA8T, 9T, 11T,10T, WFC12T, GRNFET9T and PNT9T SRAM cells, respectively, at 1 V supply voltage. The critical charge in proposed 9T SRAM cell is 2.5×/2.35×/1.14×/1.33×/1.19×/1.08×/2.47×/1.11×/1.11× improved as compared to 6T/TA8T/9T/11T/10T/12T/WFC12T/GRNFET9T/PNT9T SRAM cells. In addition to this, proposed 9T cell has 1.13×/1.06×/1.95×/1.20×/1.04×/1.04×/1.12×/1.05×1.20× less read access time than conv.6T/TA8T/9T/11T/10T/12T/WFC12T GRNFET9T/PNT9T SRAM cells.</div><div>Moreover, I<sub>on</sub>/I<sub>off</sub> ratio in proposed 9T SRAM cell is 3.0×/2.98×/4.26×/3.01×/3.21×/1.13×/3.2×/3.0×/3.42× higher than conv.6T/TA8T/9T/11T/10T/12T/WFC12T/GRNFET9T/PNT9T SRAM cells. The Monte Carlo simulation is conducted with 4000 random samples to analyze the impact of process variations on read power and read current. The overall performance and soft-error resilience of the proposed 9T SRAM cell are investigated with the ratio of reliability and stability to energy product (RSEAP). This highest RSEAP value of proposed 9T SRAM cell makes its suitability for aerospace applications.</div></div>","PeriodicalId":51131,"journal":{"name":"Microelectronics Reliability","volume":"178 ","pages":"Article 115998"},"PeriodicalIF":1.9,"publicationDate":"2026-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermally cycling-stable and highly heat-dissipative BGA packages manufactured by fluxless laser soldering: Experimental and numerical investigations 无焊剂激光焊接制造的热循环稳定和高散热的BGA封装:实验和数值研究
IF 1.9 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2026-01-22 DOI: 10.1016/j.microrel.2026.116018
Dongjin Kim , Seonghui Han , Junha Baik , Junwoo Park , Ha-Young Yu , Kwansik Chung , Eunchae Kim , Sehoon Yoo
This study developed the flux-less solder ball (i.e., Sn-3wt%Ag-0.5wt%Cu) attachment technology (FLAT), a novel and eco-friendly approach that eliminates flux processing during mass reflow while significantly reducing the warpages. Furthermore, the ball grid array (BGA) package applied with FLAT was directly compared with the BGA package manufactured by the conventional mass reflow manufacturing method in terms of thermal cycling reliability. As a result, FLAT made an intermetallic compound (IMC) of less than 1.6 μm at bonding interfaces by an instantaneous laser heat source, and solidified immediately after nucleation, forming a solder ball composed of uniform and fine beta-Sn. In contrast, the conventional mass reflow soldering using flux has caused the formation of massive Cu6Sn5 chunks inside the BGA package, and even the thickness of the IMC at the bonding interface with the pad exceeded 4.8 μm. The interfacial IMC layer suppressed by FLAT suppressed the spalling phenomenon during the continuous thermal cycling tests. In contrast, the interfacial IMC layer formed by the conventional mass reflow process had a relatively long aspect ratio, which promoted interdiffusion with the Sn matrix during thermal cycling, allowing the spalling of a large amount of Cu6Sn5 chunks into the Sn matrix. This distinguished behavior explains the distinct pros and cons of the two processes in thermal shock resistance, which determines the rigidity and heat dissipation properties within the solder. This study systematically addresses the thermal cycling behaviors of BGA packages manufactured by FLAT and MR, and heat transfer performances originated from this IMC growth behavior through numerical calculation.
本研究开发了无助焊剂焊锡球(即Sn-3wt%Ag-0.5wt%Cu)附着技术(FLAT),这是一种新颖且环保的方法,可在大量再流过程中消除助焊剂处理,同时显著减少翘曲。此外,在热循环可靠性方面,直接比较了采用FLAT制造的球栅阵列(BGA)封装与采用传统质量回流制造方法制造的BGA封装。结果表明,在瞬时激光热源作用下,FLAT在键合界面处制备出小于1.6 μm的金属间化合物(IMC), IMC在成核后立即凝固,形成由均匀、细小的β - sn组成的焊料球。相比之下,使用助焊剂的传统质量回流焊导致BGA封装内部形成大量Cu6Sn5块,甚至在与焊盘的键合界面处IMC厚度超过4.8 μm。在连续热循环试验中,被FLAT抑制的界面IMC层抑制了剥落现象。相比之下,常规质量回流工艺形成的界面IMC层具有较长的展长比,在热循环过程中促进了与Sn基体的相互扩散,使得大量Cu6Sn5块体剥落到Sn基体中。这种不同的行为解释了两种工艺在抗热震方面的不同优缺点,这决定了焊料的刚性和散热性能。本研究通过数值计算系统地研究了FLAT和MR制备的BGA封装的热循环行为,以及由这种IMC生长行为产生的传热性能。
{"title":"Thermally cycling-stable and highly heat-dissipative BGA packages manufactured by fluxless laser soldering: Experimental and numerical investigations","authors":"Dongjin Kim ,&nbsp;Seonghui Han ,&nbsp;Junha Baik ,&nbsp;Junwoo Park ,&nbsp;Ha-Young Yu ,&nbsp;Kwansik Chung ,&nbsp;Eunchae Kim ,&nbsp;Sehoon Yoo","doi":"10.1016/j.microrel.2026.116018","DOIUrl":"10.1016/j.microrel.2026.116018","url":null,"abstract":"<div><div>This study developed the flux-less solder ball (i.e., Sn-3wt%Ag-0.5wt%Cu) attachment technology (FLAT), a novel and eco-friendly approach that eliminates flux processing during mass reflow while significantly reducing the warpages. Furthermore, the ball grid array (BGA) package applied with FLAT was directly compared with the BGA package manufactured by the conventional mass reflow manufacturing method in terms of thermal cycling reliability. As a result, FLAT made an intermetallic compound (IMC) of less than 1.6 μm at bonding interfaces by an instantaneous laser heat source, and solidified immediately after nucleation, forming a solder ball composed of uniform and fine beta-Sn. In contrast, the conventional mass reflow soldering using flux has caused the formation of massive Cu<sub>6</sub>Sn<sub>5</sub> chunks inside the BGA package, and even the thickness of the IMC at the bonding interface with the pad exceeded 4.8 μm. The interfacial IMC layer suppressed by FLAT suppressed the spalling phenomenon during the continuous thermal cycling tests. In contrast, the interfacial IMC layer formed by the conventional mass reflow process had a relatively long aspect ratio, which promoted interdiffusion with the Sn matrix during thermal cycling, allowing the spalling of a large amount of Cu<sub>6</sub>Sn<sub>5</sub> chunks into the Sn matrix. This distinguished behavior explains the distinct pros and cons of the two processes in thermal shock resistance, which determines the rigidity and heat dissipation properties within the solder. This study systematically addresses the thermal cycling behaviors of BGA packages manufactured by FLAT and MR, and heat transfer performances originated from this IMC growth behavior through numerical calculation.</div></div>","PeriodicalId":51131,"journal":{"name":"Microelectronics Reliability","volume":"178 ","pages":"Article 116018"},"PeriodicalIF":1.9,"publicationDate":"2026-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparison of multiple AI models for failure classification in smart plug top case study 智能塞顶故障分类的多种人工智能模型比较
IF 1.9 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2026-01-21 DOI: 10.1016/j.microrel.2026.116019
M.L. Hoang , S. Daniele , N. Delmonte , M. Dal Re , P. Cova , D. Santoro
Smart plug tops (SPTs) with sensing capabilities are increasingly important for real-time monitoring and diagnostics in internal combustion engines. However, the deployment of numerous electronic devices and the increasing system complexity can lead to multiple types of failures that must be accurately investigated and categorized. This research presents a machine learning (ML) based approach for the categorization and prediction of various failure modes occurring in SPTs. The method involves systematic collection of sensor data during the testing phase of SPTs, which is then linked to failures identified through lifetime analysis. The ML model is trained using relevant features extracted from the acquired data, such as voltage levels, charge times, current levels, and other electrical parameters characterizing the SPT's operating behavior. The model is refined using a training and validation method to accurately predict various types of failures, such as electric discharge on the transformer secondary winding, damping diode breakdown, and short circuits between windings. A major challenge addressed in this work is the limited number of failure samples, since the device predominantly operates under normal conditions and only occasionally exhibits faulty behavior. Hence, an upsampling technique was applied to improve this imbalanced dataset. Various Artificial Intelligence (AI) models, including Machine Learning and Deep Learning were compared with each other to find out the most appropriate one for this particular case. The best classification algorithm achieves high accuracy along with good precision, recall, and F1-score on the test data. The results demonstrate the potential of ML-based analysis to enable the early identification of problem symptoms during acceptance testing and to provide a probabilistic classification of different failure types, thereby supporting predictive maintenance and reliability assessment of SPTs.
具有传感功能的智能塞顶(spt)对于内燃机的实时监测和诊断越来越重要。然而,大量电子设备的部署和日益增加的系统复杂性可能导致多种类型的故障,必须准确地调查和分类。本研究提出了一种基于机器学习(ML)的方法,用于spt发生的各种故障模式的分类和预测。该方法包括在spt测试阶段系统收集传感器数据,然后通过寿命分析将其与故障联系起来。机器学习模型使用从采集数据中提取的相关特征进行训练,例如电压水平、充电时间、电流水平和表征SPT工作行为的其他电气参数。利用训练和验证方法对模型进行了改进,以准确预测变压器二次绕组放电、阻尼二极管击穿和绕组间短路等各种类型的故障。在这项工作中解决的一个主要挑战是故障样本的数量有限,因为设备主要在正常条件下运行,只是偶尔表现出故障行为。因此,采用上采样技术来改善这种不平衡数据集。各种人工智能(AI)模型,包括机器学习和深度学习,相互比较,以找出最适合这个特定案例的模型。最好的分类算法在测试数据上具有较高的准确率、较高的查全率和f1分。结果表明,基于ml的分析可以在验收测试期间早期识别问题症状,并提供不同故障类型的概率分类,从而支持spt的预测性维护和可靠性评估。
{"title":"Comparison of multiple AI models for failure classification in smart plug top case study","authors":"M.L. Hoang ,&nbsp;S. Daniele ,&nbsp;N. Delmonte ,&nbsp;M. Dal Re ,&nbsp;P. Cova ,&nbsp;D. Santoro","doi":"10.1016/j.microrel.2026.116019","DOIUrl":"10.1016/j.microrel.2026.116019","url":null,"abstract":"<div><div>Smart plug tops (SPTs) with sensing capabilities are increasingly important for real-time monitoring and diagnostics in internal combustion engines. However, the deployment of numerous electronic devices and the increasing system complexity can lead to multiple types of failures that must be accurately investigated and categorized. This research presents a machine learning (ML) based approach for the categorization and prediction of various failure modes occurring in SPTs. The method involves systematic collection of sensor data during the testing phase of SPTs, which is then linked to failures identified through lifetime analysis. The ML model is trained using relevant features extracted from the acquired data, such as voltage levels, charge times, current levels, and other electrical parameters characterizing the SPT's operating behavior. The model is refined using a training and validation method to accurately predict various types of failures, such as electric discharge on the transformer secondary winding, damping diode breakdown, and short circuits between windings. A major challenge addressed in this work is the limited number of failure samples, since the device predominantly operates under normal conditions and only occasionally exhibits faulty behavior. Hence, an upsampling technique was applied to improve this imbalanced dataset. Various Artificial Intelligence (AI) models, including Machine Learning and Deep Learning were compared with each other to find out the most appropriate one for this particular case. The best classification algorithm achieves high accuracy along with good precision, recall, and F1-score on the test data. The results demonstrate the potential of ML-based analysis to enable the early identification of problem symptoms during acceptance testing and to provide a probabilistic classification of different failure types, thereby supporting predictive maintenance and reliability assessment of SPTs.</div></div>","PeriodicalId":51131,"journal":{"name":"Microelectronics Reliability","volume":"178 ","pages":"Article 116019"},"PeriodicalIF":1.9,"publicationDate":"2026-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of single event effects in full-customized modules for clock and data recovery circuits in 16 Gbps SerDes 16 Gbps服务器中时钟和数据恢复电路全定制模块中的单事件效应分析
IF 1.9 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2026-01-21 DOI: 10.1016/j.microrel.2026.116011
Yahao Fang, Jianjun Chen, Bin Liang, Yaqing Chi, Deng Luo, Hanhan Sun, Qian Sun, Bo Yu
Single event effects are investigated through heavy-ion experiments and laser experiments on full-customized modules for clock and data recovery circuits in 16 Gbps Serializer/Deserializer (SerDes). The experimental results show that the BER is highly susceptible to single event effects. Laser experiments identified several sensitive points, all located within the Voltage-Controlled Oscillator (VCO). The results of the study provide theoretical guidance for the future targeted hardened design of full-customized modules.
通过重离子实验和激光实验,在16 Gbps串行/反序列化器(SerDes)时钟和数据恢复电路的全定制模块上研究了单事件效应。实验结果表明,误码率对单事件效应非常敏感。激光实验确定了几个敏感点,都位于压控振荡器(VCO)内。研究结果为今后全定制化模块的针对性硬化设计提供了理论指导。
{"title":"Analysis of single event effects in full-customized modules for clock and data recovery circuits in 16 Gbps SerDes","authors":"Yahao Fang,&nbsp;Jianjun Chen,&nbsp;Bin Liang,&nbsp;Yaqing Chi,&nbsp;Deng Luo,&nbsp;Hanhan Sun,&nbsp;Qian Sun,&nbsp;Bo Yu","doi":"10.1016/j.microrel.2026.116011","DOIUrl":"10.1016/j.microrel.2026.116011","url":null,"abstract":"<div><div>Single event effects are investigated through heavy-ion experiments and laser experiments on full-customized modules for clock and data recovery circuits in 16 Gbps Serializer/Deserializer (SerDes). The experimental results show that the BER is highly susceptible to single event effects. Laser experiments identified several sensitive points, all located within the Voltage-Controlled Oscillator (VCO). The results of the study provide theoretical guidance for the future targeted hardened design of full-customized modules.</div></div>","PeriodicalId":51131,"journal":{"name":"Microelectronics Reliability","volume":"178 ","pages":"Article 116011"},"PeriodicalIF":1.9,"publicationDate":"2026-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Standardized test method for pure bending evaluation of foldable display materials under natural-arc folding 可折叠显示材料在自然弧线折叠下的纯弯曲评价的标准化试验方法
IF 1.9 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2026-01-21 DOI: 10.1016/j.microrel.2026.116016
S.Y. Lim , I.H. Cho , H.R. Hwang , U.H. Jeong
With the growing market for foldable displays, there is an increasing demand for standardized test methods to evaluate the bending characteristics of foldable materials. This study analyzed the mechanical principles of the folding mechanisms in commercial foldable displays, thereby focusing on the tension-free folding paths that minimize unnecessary stress during material evaluation. Using theoretical analysis and finite element modeling, we investigated various testing scenarios and their impact on the material stress distribution thereby revealing that a natural-arc folding mechanism with appropriate specimen mounting provide more reliable conditions for evaluating the pure bending characteristics. Further, these findings suggest that thickness-adjusted bottom-mounting methods improve consistency by accurately simulating the ideal folding conditions. This study contributes to the development of standardized testing approaches for foldable display materials, while acknowledging existing industrial practices.
随着可折叠显示器市场的不断增长,对评估可折叠材料弯曲特性的标准化测试方法的需求日益增加。本研究分析了商用可折叠显示器的折叠机制的力学原理,从而重点研究了在材料评估过程中最小化不必要应力的无张力折叠路径。通过理论分析和有限元建模,我们研究了各种测试场景及其对材料应力分布的影响,从而揭示了适当的试样安装的自然弧形折叠机制为评估纯弯曲特性提供了更可靠的条件。此外,这些发现表明,通过精确模拟理想的折叠条件,调整厚度的底部安装方法提高了一致性。本研究有助于可折叠显示材料的标准化测试方法的发展,同时承认现有的工业实践。
{"title":"Standardized test method for pure bending evaluation of foldable display materials under natural-arc folding","authors":"S.Y. Lim ,&nbsp;I.H. Cho ,&nbsp;H.R. Hwang ,&nbsp;U.H. Jeong","doi":"10.1016/j.microrel.2026.116016","DOIUrl":"10.1016/j.microrel.2026.116016","url":null,"abstract":"<div><div>With the growing market for foldable displays, there is an increasing demand for standardized test methods to evaluate the bending characteristics of foldable materials. This study analyzed the mechanical principles of the folding mechanisms in commercial foldable displays, thereby focusing on the tension-free folding paths that minimize unnecessary stress during material evaluation. Using theoretical analysis and finite element modeling, we investigated various testing scenarios and their impact on the material stress distribution thereby revealing that a natural-arc folding mechanism with appropriate specimen mounting provide more reliable conditions for evaluating the pure bending characteristics. Further, these findings suggest that thickness-adjusted bottom-mounting methods improve consistency by accurately simulating the ideal folding conditions. This study contributes to the development of standardized testing approaches for foldable display materials, while acknowledging existing industrial practices.</div></div>","PeriodicalId":51131,"journal":{"name":"Microelectronics Reliability","volume":"178 ","pages":"Article 116016"},"PeriodicalIF":1.9,"publicationDate":"2026-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comprehensive assessment of dynamic and static performance of SiC MOSFETs under highly accelerated power cycling conditions 高加速功率循环条件下SiC mosfet的动态和静态性能综合评估
IF 1.9 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2026-01-20 DOI: 10.1016/j.microrel.2026.116012
Xinyu Zhu , Yuan Chen , Pengkai Wang , Hu He
The Power Cycling Tests (PCT) constitute a critical method for assessing the long-term reliability of SiC MOSFETs. Existing studies have primarily focused on the degradation of static characteristic, which are typically measured after the device is interrupted from normal operation, thereby precluding the real-time monitoring of the aging process. Given the widespread use of SiC MOSFETs in circuit switching, investigating the degradation of their dynamic characteristics is essential for accurately simulating actual performance. This study comprehensively evaluates the changes in the dynamic and static characteristics of devices before and after PCT, encompassing the variations of gate leakage current, drain leakage current, threshold voltage, on-resistance, and junction capacitances (Ciss, Coss, and Crss), as well as switching parameters and turn-on waveforms, to analyze the degradation mechanisms. Additionally, the analysis of capacitances variations facilitated the investigation into charge injection into the gate oxide layer. The findings offer new insights into early indicators of device degradation.
功率循环测试(PCT)是评估SiC mosfet长期可靠性的关键方法。现有的研究主要集中在静态特性的退化上,这通常是在设备中断正常运行后测量的,因此无法实时监测老化过程。鉴于SiC mosfet在电路开关中的广泛应用,研究其动态特性的退化对于准确模拟实际性能至关重要。本研究综合评价PCT前后器件的动静态特性的变化,包括栅极漏电流、漏极漏电流、阈值电压、导通电阻、结电容(Ciss、Coss、Crss)、开关参数和导通波形的变化,分析其退化机理。此外,对电容变化的分析有助于对栅氧化层电荷注入的研究。这些发现为设备退化的早期指标提供了新的见解。
{"title":"Comprehensive assessment of dynamic and static performance of SiC MOSFETs under highly accelerated power cycling conditions","authors":"Xinyu Zhu ,&nbsp;Yuan Chen ,&nbsp;Pengkai Wang ,&nbsp;Hu He","doi":"10.1016/j.microrel.2026.116012","DOIUrl":"10.1016/j.microrel.2026.116012","url":null,"abstract":"<div><div>The Power Cycling Tests (PCT) constitute a critical method for assessing the long-term reliability of SiC MOSFETs. Existing studies have primarily focused on the degradation of static characteristic, which are typically measured after the device is interrupted from normal operation, thereby precluding the real-time monitoring of the aging process. Given the widespread use of SiC MOSFETs in circuit switching, investigating the degradation of their dynamic characteristics is essential for accurately simulating actual performance. This study comprehensively evaluates the changes in the dynamic and static characteristics of devices before and after PCT, encompassing the variations of gate leakage current, drain leakage current, threshold voltage, on-resistance, and junction capacitances (<em>C</em><sub><em>iss</em></sub>, <em>C</em><sub><em>oss</em></sub>, and <em>C</em><sub><em>rss</em></sub>), as well as switching parameters and turn-on waveforms, to analyze the degradation mechanisms. Additionally, the analysis of capacitances variations facilitated the investigation into charge injection into the gate oxide layer. The findings offer new insights into early indicators of device degradation.</div></div>","PeriodicalId":51131,"journal":{"name":"Microelectronics Reliability","volume":"178 ","pages":"Article 116012"},"PeriodicalIF":1.9,"publicationDate":"2026-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A BiLSTM-based digital twin model for photovoltaic strings under current mismatch condition 电流失配条件下基于bilstm的光伏串数字孪生模型
IF 1.9 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2026-01-19 DOI: 10.1016/j.microrel.2026.116020
Yihan Chen , Mingyao Ma , Wenting Ma , Rui Zhang , Zhenyu Fang
The reliability of photovoltaic (PV) systems is increasingly challenged by string-level faults affecting both performance and safety. To address this issue, this study proposes a four-layer digital twin (DT) framework for intelligent monitoring and fault diagnosis of PV strings under mismatch conditions. In the virtual layer, the Sandia Array Performance Model and the Perez model are employed to estimate module temperature and plane-of-array irradiance, which are then input into a bidirectional long short-term memory (BiLSTM) network for current prediction. To enhance adaptability, a solar-elevation-based Current Mismatch Ratio (CMR) is introduced as an auxiliary correction factor, enabling dynamic modeling of mismatch behavior. The CMR-assisted BiLSTM achieves a root mean square error (RMSE) of 0.4306 and a coefficient of determination (R2) of 0.9594, demonstrating high predictive accuracy. In the decision layer, a sliding-window mechanism combined with a support vector machine classifier distinguishes bypass diode short-circuit faults from mismatch phenomena using statistical features of R2 and RMSE. Validation based on operational data from actual PV power plants shows that the proposed DT-based approach achieves an accuracy of 96.76%, precision of 93.39%, recall of 97.96%, and an F1-score of 95.63%, outperforming traditional reference string–based methods by 1.22%, 3.12%, and 1.59% in accuracy, precision, and F1-score, respectively. These results confirm that the proposed DT framework provides real-time fault diagnosis and predictive maintenance, significantly improving the operational reliability of PV systems under dynamic environmental conditions.
影响光伏系统性能和安全性的串级故障对光伏系统的可靠性提出了越来越大的挑战。为了解决这一问题,本研究提出了一个四层数字孪生(DT)框架,用于错配条件下光伏串的智能监测和故障诊断。在虚拟层,采用Sandia阵列性能模型和Perez模型估计模块温度和阵列平面辐照度,然后将其输入双向长短期记忆(BiLSTM)网络进行电流预测。为了增强自适应性,引入了基于太阳高度的电流失配比(CMR)作为辅助校正因子,实现了失配行为的动态建模。cmr辅助BiLSTM的均方根误差(RMSE)为0.4306,决定系数(R2)为0.9594,具有较高的预测精度。在决策层,滑动窗口机制结合支持向量机分类器,利用R2和RMSE的统计特征将旁路二极管短路故障与失配现象区分开来。基于实际光伏电站运行数据的验证表明,本文方法的准确率为96.76%,精密度为93.39%,召回率为97.96%,f1评分为95.63%,准确度、精密度和f1评分分别比传统参考字符串方法高1.22%、3.12%和1.59%。这些结果证实了所提出的DT框架提供了实时故障诊断和预测性维护,显著提高了光伏系统在动态环境条件下的运行可靠性。
{"title":"A BiLSTM-based digital twin model for photovoltaic strings under current mismatch condition","authors":"Yihan Chen ,&nbsp;Mingyao Ma ,&nbsp;Wenting Ma ,&nbsp;Rui Zhang ,&nbsp;Zhenyu Fang","doi":"10.1016/j.microrel.2026.116020","DOIUrl":"10.1016/j.microrel.2026.116020","url":null,"abstract":"<div><div>The reliability of photovoltaic (PV) systems is increasingly challenged by string-level faults affecting both performance and safety. To address this issue, this study proposes a four-layer digital twin (DT) framework for intelligent monitoring and fault diagnosis of PV strings under mismatch conditions. In the virtual layer, the Sandia Array Performance Model and the Perez model are employed to estimate module temperature and plane-of-array irradiance, which are then input into a bidirectional long short-term memory (BiLSTM) network for current prediction. To enhance adaptability, a solar-elevation-based Current Mismatch Ratio (CMR) is introduced as an auxiliary correction factor, enabling dynamic modeling of mismatch behavior. The CMR-assisted BiLSTM achieves a root mean square error (RMSE) of 0.4306 and a coefficient of determination (<span><math><msup><mrow><mi>R</mi></mrow><mrow><mn>2</mn></mrow></msup></math></span>) of 0.9594, demonstrating high predictive accuracy. In the decision layer, a sliding-window mechanism combined with a support vector machine classifier distinguishes bypass diode short-circuit faults from mismatch phenomena using statistical features of <span><math><msup><mrow><mi>R</mi></mrow><mrow><mn>2</mn></mrow></msup></math></span> and RMSE. Validation based on operational data from actual PV power plants shows that the proposed DT-based approach achieves an accuracy of 96.76%, precision of 93.39%, recall of 97.96%, and an F1-score of 95.63%, outperforming traditional reference string–based methods by 1.22%, 3.12%, and 1.59% in accuracy, precision, and F1-score, respectively. These results confirm that the proposed DT framework provides real-time fault diagnosis and predictive maintenance, significantly improving the operational reliability of PV systems under dynamic environmental conditions.</div></div>","PeriodicalId":51131,"journal":{"name":"Microelectronics Reliability","volume":"178 ","pages":"Article 116020"},"PeriodicalIF":1.9,"publicationDate":"2026-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145993604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Local stress distribution in sintered nanoporous silver films under mechanical and thermal loading 机械和热载荷作用下烧结纳米孔银膜的局部应力分布
IF 1.9 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2026-01-19 DOI: 10.1016/j.microrel.2026.116009
Kokouvi Happy N'Tsouaglo , Loic Signor , Jérôme Colin , Xavier Milhet
The sintering process of silver paste has attracted increasing attention in electronic packaging due to its exceptional bonding quality and ability to withstand high operating temperatures. However, industrial constraints often lead to conditions that result in a porous microstructure after sintering, which adversely affects material properties, particularly during aging. In this study, we investigate both the global and local elastic response of sintered Ag (s-Ag) porous structures under mechanical and thermal loading. Two types of three-dimensional (3D) microstructures are considered: real microstructures obtained from serial block-face scanning electron microscopy, and synthetic ones generated by random placement of overlapping spheres. In addition, a realistic tri-layer Cu/s-Ag/Cu assembly is analyzed to simulate conditions encountered in power modules. Full-field numerical simulations were conducted using the finite element method. For the porous microstructures examined, the macroscopic elastic behavior of s-Ag, which exhibits quasi-isotropy, is found to primarily depend only on the pore volume fraction. Local stresses in Ag matrix due to an applied mechanical loading, as well as thermal stresses due to a temperature increase in sintered Ag-Cu assembly, show a high spatial heterogeneity. Maximal stress level can reach about twice the mean value. Even though these areas of stress concentration depend strongly on the specific pores cluster, conversely, for a given pore volume fraction, the stress probability distribution is weakly influenced by the details of the nanoporous structure.
银浆的烧结工艺由于其优异的粘合质量和耐高温的能力在电子封装中越来越受到关注。然而,工业限制往往导致烧结后的多孔微观结构,这对材料性能产生不利影响,特别是在老化过程中。在这项研究中,我们研究了烧结银(s-Ag)多孔结构在机械和热载荷下的整体和局部弹性响应。考虑了两种类型的三维微结构:由连续块面扫描电子显微镜获得的真实微结构和由重叠球体随机放置产生的合成微结构。此外,还分析了一种真实的三层Cu/s-Ag/Cu组件,以模拟功率模块中遇到的情况。采用有限元法进行了全场数值模拟。对于所研究的多孔微观结构,发现具有准各向同性的s-Ag的宏观弹性行为主要取决于孔隙体积分数。Ag基体中由于施加机械载荷而产生的局部应力,以及由于烧结Ag- cu组件温度升高而产生的热应力,表现出高度的空间非均质性。最大应力水平可达到平均值的两倍左右。尽管这些应力集中区域强烈依赖于特定的孔隙簇,相反,对于给定的孔隙体积分数,应力概率分布受纳米孔结构细节的影响很小。
{"title":"Local stress distribution in sintered nanoporous silver films under mechanical and thermal loading","authors":"Kokouvi Happy N'Tsouaglo ,&nbsp;Loic Signor ,&nbsp;Jérôme Colin ,&nbsp;Xavier Milhet","doi":"10.1016/j.microrel.2026.116009","DOIUrl":"10.1016/j.microrel.2026.116009","url":null,"abstract":"<div><div>The sintering process of silver paste has attracted increasing attention in electronic packaging due to its exceptional bonding quality and ability to withstand high operating temperatures. However, industrial constraints often lead to conditions that result in a porous microstructure after sintering, which adversely affects material properties, particularly during aging. In this study, we investigate both the global and local elastic response of sintered Ag (s-Ag) porous structures under mechanical and thermal loading. Two types of three-dimensional (3D) microstructures are considered: real microstructures obtained from serial block-face scanning electron microscopy, and synthetic ones generated by random placement of overlapping spheres. In addition, a realistic tri-layer Cu/s-Ag/Cu assembly is analyzed to simulate conditions encountered in power modules. Full-field numerical simulations were conducted using the finite element method. For the porous microstructures examined, the macroscopic elastic behavior of s-Ag, which exhibits quasi-isotropy, is found to primarily depend only on the pore volume fraction. Local stresses in Ag matrix due to an applied mechanical loading, as well as thermal stresses due to a temperature increase in sintered Ag-Cu assembly, show a high spatial heterogeneity. Maximal stress level can reach about twice the mean value. Even though these areas of stress concentration depend strongly on the specific pores cluster, conversely, for a given pore volume fraction, the stress probability distribution is weakly influenced by the details of the nanoporous structure.</div></div>","PeriodicalId":51131,"journal":{"name":"Microelectronics Reliability","volume":"177 ","pages":"Article 116009"},"PeriodicalIF":1.9,"publicationDate":"2026-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146038226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Performance evaluation of InN-based Junctionless FETs under single and double gate architectures 单栅极和双栅极结构下基于in的无结场效应管的性能评价
IF 1.9 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2026-01-17 DOI: 10.1016/j.microrel.2026.116014
Swati Verma , Pushpa Raikwal , Neeraj K. Jaiswal
In this manuscript for the first time we incorporated the indium nitride (InN) in junctionless field effect transistor (JLFET) after investigating its electronic behavior and transport properties. The purpose of the investigation is to overcome the limitation of conventional Si-based device. Owing to its properties like varied bandgap (0.66 eV–1.34 eV) obtained via passivation technique, high electron mobility, large saturation velocity and comparatively less effective mass. InN offers excellent transport properties and enables improved drive current. The performance evaluation of diverse gate architecture i.e. single and double gate of InN-based JLFET. The InN-SGJLFET structure demonstrates simplicity and reduced fabrication complexity, but it suffers from limited gate control. In contrast, the InN-DGJLFET provides superior electrostatic integrity by enhancing gate channel coupling. The 2-D simulation of single and double gate InN-based JLFET, when compared with conventional Si-JLFET exhibits: (1) high ION/IOFF current ratio of 107; (2) Low OFF-state current 1011A/μm; and (3) Better subthreshold swing (SS) (62.17 mV/decade) for InN-DGJLFET. The figure of merit of the device like ON-current (ION), OFF-current (IOFF), ON-OFF current ratio, SS and drain-induced barrier lowering (DIBL) have been evaluated. The comparative analysis highlights that InN-DGJLFETs is more suitable for sub-10-nm regime devices, where strong electrostatic gate control is crucial for balancing the operation and power efficiency. Further, the comparative study of process variation is performed on considered devices. These findings suggest that InN-based JLFETs, particularly in multi-gate configuration, can serve as promising candidates for next-generation ultra-scaled low-power electronics.
本文在研究了氮化铟(InN)的电子行为和输运特性后,首次将其应用于无结场效应晶体管(JLFET)中。研究的目的是克服传统硅基器件的局限性。由于钝化技术得到的带隙变化较大(0.66 eV - 1.34 eV),电子迁移率高,饱和速度大,有效质量相对较小。InN具有优异的传输性能,并能提高驱动电流。不同栅极结构(单栅极和双栅极)的性能评价。InN-SGJLFET结构简单,降低了制造复杂性,但其栅极控制有限。相比之下,InN-DGJLFET通过增强栅极沟道耦合提供了优越的静电完整性。单栅极和双栅极铟基JLFET的二维仿真结果表明,与传统硅基JLFET相比,(1)离子/IOFF电流比高达≈107;(2)低关断电流≈10−11A/μm;(3) in - dgjlfet具有较好的亚阈值摆幅(SS)(≈62.17 mV/十进)。对器件的通流(ION)、关流(IOFF)、通断电流比、SS和漏极诱导势垒降低(DIBL)等性能指标进行了评价。对比分析表明,inn - dgjlfet更适合于10纳米以下的器件,在这些器件中,强静电栅极控制对于平衡运行和功率效率至关重要。此外,在考虑的设备上进行了工艺变化的比较研究。这些发现表明,基于铟的jlfet,特别是在多栅极配置下,可以作为下一代超大规模低功耗电子产品的有希望的候选者。
{"title":"Performance evaluation of InN-based Junctionless FETs under single and double gate architectures","authors":"Swati Verma ,&nbsp;Pushpa Raikwal ,&nbsp;Neeraj K. Jaiswal","doi":"10.1016/j.microrel.2026.116014","DOIUrl":"10.1016/j.microrel.2026.116014","url":null,"abstract":"<div><div>In this manuscript for the first time we incorporated the indium nitride (InN) in junctionless field effect transistor (JLFET) after investigating its electronic behavior and transport properties. The purpose of the investigation is to overcome the limitation of conventional Si-based device. Owing to its properties like varied bandgap (0.66 eV–1.34 eV) obtained via passivation technique, high electron mobility, large saturation velocity and comparatively less effective mass. InN offers excellent transport properties and enables improved drive current. The performance evaluation of diverse gate architecture i.e. single and double gate of InN-based JLFET. The InN-SGJLFET structure demonstrates simplicity and reduced fabrication complexity, but it suffers from limited gate control. In contrast, the InN-DGJLFET provides superior electrostatic integrity by enhancing gate channel coupling. The 2-D simulation of single and double gate InN-based JLFET, when compared with conventional Si-JLFET exhibits: (1) high <span><math><msub><mrow><mi>I</mi></mrow><mrow><mi>O</mi><mi>N</mi></mrow></msub></math></span>/<span><math><msub><mrow><mi>I</mi></mrow><mrow><mi>O</mi><mi>F</mi><mi>F</mi></mrow></msub></math></span> current ratio of <span><math><mrow><mo>≈</mo><mspace></mspace><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mn>7</mn></mrow></msup></mrow></math></span>; (2) Low OFF-state current <span><math><mrow><mo>≈</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mo>−</mo><mn>11</mn></mrow></msup><mi>A</mi><mo>/</mo><mi>μ</mi><mi>m</mi></mrow></math></span>; and (3) Better subthreshold swing (SS) (<span><math><mo>≈</mo></math></span>62.17 mV/decade) for InN-DGJLFET. The figure of merit of the device like ON-current (<span><math><msub><mrow><mi>I</mi></mrow><mrow><mi>O</mi><mi>N</mi></mrow></msub></math></span>), OFF-current (<span><math><msub><mrow><mi>I</mi></mrow><mrow><mi>O</mi><mi>F</mi><mi>F</mi></mrow></msub></math></span>), ON-OFF current ratio, SS and drain-induced barrier lowering (DIBL) have been evaluated. The comparative analysis highlights that InN-DGJLFETs is more suitable for sub-10-nm regime devices, where strong electrostatic gate control is crucial for balancing the operation and power efficiency. Further, the comparative study of process variation is performed on considered devices. These findings suggest that InN-based JLFETs, particularly in multi-gate configuration, can serve as promising candidates for next-generation ultra-scaled low-power electronics.</div></div>","PeriodicalId":51131,"journal":{"name":"Microelectronics Reliability","volume":"177 ","pages":"Article 116014"},"PeriodicalIF":1.9,"publicationDate":"2026-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146038224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In-depth 2D FEM analysis of gate cracking in SiC MOSFETs under repetitive short-circuit conditions: Application of a damage-based model for crack length prediction 重复短路条件下SiC mosfet栅极裂纹的深入二维有限元分析:基于损伤模型的裂纹长度预测应用
IF 1.9 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2026-01-16 DOI: 10.1016/j.microrel.2026.116005
Mustafa Shqair, Emmanuel Sarraute, Frédéric Richardeau
An advanced structural and physical model of Intermediate Layer Dielectric (ILD) cracking in a planar gate under short-circuit (SC) conditions has been developed as a continuation of our previous studies. This approach utilizes an energy-based Rankine damage model, which is applied based on the mechanical properties of SiO2. The Rankine model has been seamlessly integrated into a comprehensive 2D electrothermal-metallurgical and elastoplastic-mechanical framework, which accounts for both the high-temperature rise and its return to its reference value during the cooling phase. In a novel approach, multiple repetitive mechanical cycles were simulated to evaluate the progression and rate of crack penetration, with variations in parameters such as pulse duration and damage model coefficients. This model illustrated the evolution of crack formation and direction during cycling, in alignment with the crack progression observed experimentally in microsections.
作为我们之前研究的延续,我们建立了一种先进的平面栅极在短路(SC)条件下中间层介电(ILD)开裂的结构和物理模型。该方法采用基于能量的朗肯损伤模型,该模型基于SiO2的力学性能。Rankine模型已经无缝地集成到一个综合的二维电热-冶金和弹塑性-机械框架中,该框架既考虑了高温上升,也考虑了冷却阶段温度回到参考值。在一种新颖的方法中,模拟了多个重复的机械循环,以评估裂纹渗透的进展和速率,以及脉冲持续时间和损伤模型系数等参数的变化。该模型说明了循环过程中裂纹形成和方向的演变,与显微切片实验观察到的裂纹进展一致。
{"title":"In-depth 2D FEM analysis of gate cracking in SiC MOSFETs under repetitive short-circuit conditions: Application of a damage-based model for crack length prediction","authors":"Mustafa Shqair,&nbsp;Emmanuel Sarraute,&nbsp;Frédéric Richardeau","doi":"10.1016/j.microrel.2026.116005","DOIUrl":"10.1016/j.microrel.2026.116005","url":null,"abstract":"<div><div>An advanced structural and physical model of Intermediate Layer Dielectric (ILD) cracking in a planar gate under short-circuit (SC) conditions has been developed as a continuation of our previous studies. This approach utilizes an energy-based Rankine damage model, which is applied based on the mechanical properties of SiO<sub>2</sub>. The Rankine model has been seamlessly integrated into a comprehensive 2D electrothermal-metallurgical and elastoplastic-mechanical framework, which accounts for both the high-temperature rise and its return to its reference value during the cooling phase. In a novel approach, multiple repetitive mechanical cycles were simulated to evaluate the progression and rate of crack penetration, with variations in parameters such as pulse duration and damage model coefficients. This model illustrated the evolution of crack formation and direction during cycling, in alignment with the crack progression observed experimentally in microsections.</div></div>","PeriodicalId":51131,"journal":{"name":"Microelectronics Reliability","volume":"177 ","pages":"Article 116005"},"PeriodicalIF":1.9,"publicationDate":"2026-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145978744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Microelectronics Reliability
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1