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2023 IEEE International Reliability Physics Symposium (IRPS)最新文献

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Towards a Universal Model of Dielectric Breakdown 迈向电介质击穿的通用模型
Pub Date : 2023-03-01 DOI: 10.1109/IRPS48203.2023.10117846
A. Padovani, P. L. Torraca, J. Strand, A. Shluger, Valerio Milo, L. Larcher
We present a microscopic breakdown (BD) model in which chemical bonds are weakened by carrier injection and trapping into pre-existing structural defects (precursors) and by the electric field. The model goes much beyond the existing ones by consistently explaining the role of both current (a weakness of the E model) and temperature (a weakness of the power-law model), along with the role of the electric field. It also explains the non-Arrhenius temperature dependence of BD. It suggests a new comprehensive physics-based framework (with tight connections to material properties) reconciling the many breakdown theories proposed so far (E, power-law, 1/E,…) within a more universal breakdown model.
我们提出了一个微观击穿(BD)模型,其中化学键被载流子注入和捕获到预先存在的结构缺陷(前体)和电场削弱。该模型超越了现有的模型,一致地解释了电流(E模型的一个弱点)和温度(幂律模型的一个弱点)的作用,以及电场的作用。它还解释了BD的非阿伦尼乌斯温度依赖性。它提出了一个新的综合的基于物理的框架(与材料特性紧密联系),以协调迄今为止提出的许多击穿理论(E,幂律,1/E,…)在一个更普遍的击穿模型中。
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引用次数: 3
A World First QLC RRAM: Highly Reliable Resistive-Gate Flash with Record 108 Endurance and Excellent Retention 世界上第一个QLC RRAM:高可靠的电阻栅极闪存,具有创纪录的108耐久性和优异的保持力
Pub Date : 2023-03-01 DOI: 10.1109/IRPS48203.2023.10117748
M. Y. Li, J. P. Lee, C. H. Liu, J. C. Guo, S.S. Chung
In this paper, we demonstrated successfully a quad-level cell (QLC) of a resistive-gate memory. It was implemented in a 1k bits chip with integration of FinFET core on a mature logic platform. Comprehensive reliabilities have been examined. The results show the forming-free property, low programming current $(< mu mathrm{A})$, high endurance and excellent data retention. A record high 5×108 endurance can be achieved. Furthermore, a 4-bit-per-cell (16 levels) has been demonstrated successfully. The chip-level performance is also analyzed, showing well disturbance-immune during SET/RESET, READ, which kept healthy signal-to-noise margin, 2-3x. This architecture is a strong candidate for the next generation resistance memory.
在本文中,我们成功地展示了一个四电平单元(QLC)的电阻门存储器。在成熟的逻辑平台上,在集成FinFET核心的1k位芯片上实现。已对综合可靠性进行了检验。结果表明,该芯片具有无成形特性,编程电流$(< mu mathrm{A})$小,耐用性好,数据保存性能好。可以达到创纪录的5×108耐力。此外,还成功地演示了每个单元4位(16个级别)。还分析了芯片级性能,显示在SET/RESET, READ期间具有良好的抗干扰性,保持了健康的信噪比,为2-3倍。这种架构是下一代电阻存储器的有力候选。
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引用次数: 0
Towards Understanding the Physics of Gate Switching Instability in Silicon Carbide MOSFETs 对碳化硅mosfet栅极开关不稳定性的物理理解
Pub Date : 2023-03-01 DOI: 10.1109/IRPS48203.2023.10117740
M. W. Feil, Katja Waschneck, H. Reisinger, J. Berens, T. Aichinger, P. Salmen, G. Rescher, W. Gustin, T. Grasser
Bias temperature instability (BTI) is a well-investigated degradation mechanism in technologies based on silicon, gallium nitride, or silicon carbide (SiC). Essentially, it leads to a drift in the threshold voltage and to a reduction in mobility after application of a gate bias, and becomes worse at elevated temperatures. However, as discovered recently, the threshold voltage drift of SiC metal-oxide-semiconductor field-effect transistors (MOSFETs) has different properties than those known from BTI when the gate terminal of the device is switched in a bipolar mode. This new degradation mechanism has recently been termed gate switching instability (GSI). To further understand this degradation mechanism and the underlying physics, we have used pre- and post-stress impedance characterization and in-situ ultra-fast threshold voltage measurements. Most importantly, we show that the gate switching leads to the creation of fast, acceptor-like interface defects that lead to a shift in threshold voltage, and hence appear to be responsible for GSI.
偏置温度不稳定性(BTI)是基于硅、氮化镓或碳化硅(SiC)技术的一种被广泛研究的降解机制。从本质上讲,它导致阈值电压的漂移和栅极偏置后迁移率的降低,并且在高温下变得更糟。然而,正如最近发现的那样,当器件的栅极端开关为双极模式时,SiC金属氧化物半导体场效应晶体管(mosfet)的阈值电压漂移与BTI所知的特性不同。这种新的退化机制最近被称为栅极开关不稳定性(GSI)。为了进一步了解这种降解机制和潜在的物理特性,我们使用了应力前后阻抗表征和现场超快速阈值电压测量。最重要的是,我们表明栅极开关导致快速的,类似于受体的界面缺陷的产生,导致阈值电压的移动,因此似乎是导致GSI的原因。
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引用次数: 1
Challenges and solutions to the defect-centric modeling and circuit simulation of time-dependent variability 以缺陷为中心的时变性建模与电路仿真的挑战与解决方案
Pub Date : 2023-03-01 DOI: 10.1109/IRPS48203.2023.10118334
J. Martín-Martínez, J. Diaz-Fortuny, P. Saraza-Canflanca, R. Rodríguez, R. Castro-López, E. Roca, F. Fernández, M. Nafría
Time-Dependent Variability (TDV) phenomena represent a serious concern for device and circuit reliability. To address the TDV impact at circuit level, Reliability-Aware Design (RAD) tools can be used by circuit designers to achieve more reliable circuits. However, this is not a straightforward task, since the development of RAD tools comprises several steps such as the characterization, modeling and simulation of TDV phenomena. Furthermore, in deeply-scaled CMOS technologies, TDV reveals a stochastic nature that can complicate those steps. In this invited paper, we review some of the main challenges that appear in each step of the flow towards the development of RAD tools, providing our solutions to them.
时间相关变异性(TDV)现象严重影响器件和电路的可靠性。为了在电路层面解决TDV的影响,电路设计人员可以使用可靠性感知设计(RAD)工具来实现更可靠的电路。然而,这并不是一项简单的任务,因为RAD工具的开发包括几个步骤,如TDV现象的表征、建模和仿真。此外,在深度缩放的CMOS技术中,TDV显示出随机性,可能使这些步骤复杂化。在这篇受邀的论文中,我们回顾了在开发RAD工具的每个步骤中出现的一些主要挑战,并提供了我们的解决方案。
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引用次数: 0
Microscopic Characterization of Failure Mechanisms in Long-Term Implanted Microwire Neural Electrodes 长期植入的微丝神经电极失效机制的微观表征
Pub Date : 2023-03-01 DOI: 10.1109/IRPS48203.2023.10117971
Z.J. Zhang, Q. Li, Z. Dong, W.T. Wang, S. T. Lai, X. Yang, F. Liang, C.L. Wang, Changzhi Luo, L. Lyu, Z. Li, J.M. Xu, X. Wu
The development of integrated circuits greatly enhances brain-computer interface technology. The degradation of the implanted neural electrodes is a key issue. The scanning electron microscope and energy dispersive spectrometer techniques are used to characterize the evolution of the microscopic morphology and element migration of implanted microwire electrodes containing 32 channels together with the recorded neural signals at different implantation times. The spike amplitude decreases over time of implantation, leading to poorer identification of neural signals. The effect of degradation on the local field potential detection is neglectable. This work could guide the reliability improvement of the neural electrodes.
集成电路的发展极大地促进了脑机接口技术的发展。植入神经电极的降解是一个关键问题。利用扫描电镜和能量色散谱技术,对植入32通道微丝电极的微观形貌和元素迁移的演变进行了表征,并记录了不同植入时间的神经信号。随着植入时间的延长,尖峰振幅减小,导致神经信号的识别能力下降。退化对局部场电位检测的影响可以忽略不计。这项工作对提高神经电极的可靠性具有指导意义。
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引用次数: 0
In-Product BTI Aging Sensor for Reliability Screening and Early Detection of Material at Risk 用于可靠性筛选和危险材料早期检测的产品内BTI老化传感器
Pub Date : 2023-03-01 DOI: 10.1109/IRPS48203.2023.10118144
T. Brożek, Alberto A. P. Cattaneo, L. Weiland, M. Quarantelli, Alberto Coccoli, S. Saxena, C. Hess, A. Strojwas
We have developed a new reliability monitoring suite, within a proprietary IP block that we call a CV® Core, with aging sensors embedded in the product layout and testable through the product I / O interface. We illustrate the application of the sensor suite with an example of the PMOS NBTI monitor, testable at the wafer level during product electrical wafer sort (EWS), as well after packaging at final test or during burn-in. During EWS, the wafer-level stress test can be used to identify a marginal chip, help material dispositioning for burn-in, or support additional grading for chiplet matching for multi-chip modules. The aging sensors can also be used during the chip lifetime to monitor the device wear-out and alarm users about abnormal silicon aging rates against target mission profile. In this work, we show the wafer level test results for PMOS transistor degradation rates under NBTI stress, within wafer variability, and correlation of degradation rates between sensors stressed under different conditions.
我们已经开发了一种新的可靠性监控套件,在一个专有的IP块中,我们称之为CV®Core,老化传感器嵌入到产品布局中,并通过产品I / O接口进行测试。我们以PMOS NBTI监视器为例说明了传感器套件的应用,该监视器在产品电气晶圆排序(EWS)期间,以及封装后的最终测试或老化期间在晶圆级进行测试。在EWS过程中,晶圆级压力测试可用于识别边缘芯片,帮助材料处理老化,或支持多芯片模块的芯片匹配的额外分级。老化传感器还可以在芯片寿命期间监测设备磨损情况,并向用户发出针对目标任务剖面的异常硅老化率警报。在这项工作中,我们展示了在NBTI应力下PMOS晶体管降解率的晶圆级测试结果,在晶圆可变性下,以及不同条件下应力传感器之间降解率的相关性。
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引用次数: 0
GaN HEMTs Design and Modeling for 5G 5G GaN hemt设计与建模
Pub Date : 2023-03-01 DOI: 10.1109/IRPS48203.2023.10117652
Yueying Liu, John Wood, Zongyang Hu, S. Ganguly, J. Fisher, M. Watts, S. Sheppard, D. Gajewski, Basim Noori
As GaN on SiC technology becomes accessible to commercial users for 5G applications, modeling needs from transistor to system level has become a big challenge for designers. In this work we demonstrated the strategy of using multi-physics modeling for a high power GaN HEMT PA design to achieve the stringent design target goal on the product level. The simulation result shows excellent agreement between measurements and models. Meanwhile, to facilitate the design process at system level, behavioral modeling is used to predict module level performance by integrating models in complex signal scheme environment. The final product used with Wolfspeed's 5G targeted process with reliability test validity is demonstrated in the paper as well.
随着5G应用的商业用户可以使用GaN on SiC技术,从晶体管到系统级的建模需求已成为设计人员面临的一大挑战。在这项工作中,我们展示了在高功率GaN HEMT PA设计中使用多物理场建模的策略,以在产品层面上实现严格的设计目标。仿真结果表明,实测数据与模型吻合良好。同时,为了方便系统级的设计过程,通过对复杂信号方案环境下的模型进行集成,利用行为建模来预测模块级的性能。文中还展示了Wolfspeed 5G目标工艺的最终产品,并进行了信度测试效度的验证。
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引用次数: 1
Backhopping-based STT-MRAM Poisson Spiking Neuron for Neuromorphic Computation 基于后跳的STT-MRAM泊松峰值神经元神经形态计算
Pub Date : 2023-03-01 DOI: 10.1109/IRPS48203.2023.10118343
J. Tan, J. H. Lim, J. Kwon, V. B. Naik, N. Raghavan, K. Pey
Spin-transfer-torque magnetic random-access memory (STT-MRAM) is a proven technology for embedded non-volatile memory applications. The backhopping phenomena in STT-MRAM, whereby the resistance of the device oscillates under higher current, has been recently explored for emerging spiking neural network applications. We report a detailed characterization of backhopping in foundry compatible STT-MRAM having ~15kb bit-cell arrays by analyzing the behavior of backhopping spike rate versus applied current and temperature. Our study shows that the backhopping in STT-MRAM exhibits the Poisson statistics with a controllable spike rate with current that displays three regimes: non-backhopping, exponential and linear. This mimics the behavior of a rectified linear unit (ReLU) neuron, a commonly used activation function in deep learning models. A spiking neural network (SNN) communication channel is simulated using the derived statistics and a first principles mathematical framework to analyze the reliability performance of backhopping-based SNN in terms of trading-off the accuracy and applied current.
自旋-转矩磁随机存取存储器(STT-MRAM)是一种成熟的嵌入式非易失性存储器应用技术。STT-MRAM中的回跳现象,即器件的电阻在较大电流下振荡,最近已被用于新兴的尖峰神经网络应用。我们通过分析反向跳峰速率随施加电流和温度的变化,详细描述了具有~15kb位元阵列的铸造厂兼容STT-MRAM的反向跳特性。我们的研究表明,STT-MRAM的回跳表现出具有可控尖峰率的泊松统计量,具有三种状态:非回跳、指数和线性。这模仿了一个整流线性单元(ReLU)神经元的行为,这是深度学习模型中常用的激活函数。利用导出的统计量和第一性原理数学框架对一个尖峰神经网络(SNN)通信信道进行了仿真,从精度和应用电流的权衡角度分析了基于后跳的SNN的可靠性性能。
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引用次数: 0
Near Zero Field Magnetoresistance Spectroscopy: A New Tool in Semiconductor Reliability Physics 近零场磁阻谱:半导体可靠性物理的新工具
Pub Date : 2023-03-01 DOI: 10.1109/IRPS48203.2023.10118053
P. Lenahan, E. Frantz, S. King, M. Anders, S. Moxim, J. P. Ashton, Kyle J. Myers, M. Flatté, N. Harmon
A relatively simple addition to many widely utilized semiconductor device characterization techniques can allow one to identify much of the atomic scale structure of point defects which play important roles in the electronic properties of the devices under study. This simple addition can also open up the possible exploration of the kinetics involved in some reliability phenomena as well as in multiple transport mechanisms. This addition is a small (0 to a few mT) time varying magnetic field centered upon zero field. A readily observable difference between various device responses at zero and small fields can be observed in a wide range of measurements often used in semiconductor device characterization. These measurements include metal-oxide-semiconductor field-effect transistor (MOSFET) charge pumping, metal-oxide-semiconductor (MOS) gated diode recombination current, so called direct current current-voltage (DCIV) measurements, deep level transient spectroscopy, and simple current measurements in dielectric films and in pn junctions. Multiple materials systems of great technological interest can be explored with the techniques. They are based on near zero field magnetoresistance (NZFMR) phenomena, spin-based quantum effects involving magnetic field induced changes which occur in multiple electronic transport phenomena. Because these spin-based changes are strongly affected by fundamentally well understood spin-spin interactions such as electron-nuclear hyperfine interactions or electron-electron dipolar interactions, this NZFMR response has quite substantial analytical power. The NZFMR techniques can be gainfully applied to device structures based upon numerous materials systems, among them being silicon dioxide, silicon, silicon carbide, silicon nitride and amorphous SiOC:H films utilized in interlayer dielectrics.
对于许多广泛使用的半导体器件表征技术,一个相对简单的补充可以允许人们识别在所研究器件的电子特性中起重要作用的点缺陷的许多原子尺度结构。这个简单的添加也可以打开可能的探索动力学涉及一些可靠性现象,以及在多种传输机制。这个附加是一个小的(0到几mT)时变磁场,以零场为中心。在半导体器件表征中经常使用的广泛测量中,可以观察到各种器件在零场和小场下的响应之间容易观察到的差异。这些测量包括金属氧化物半导体场效应晶体管(MOSFET)电荷泵送,金属氧化物半导体(MOS)门控二极管复合电流,即所谓的直流-电压(DCIV)测量,深电平瞬态光谱,以及介电膜和pn结中的简单电流测量。多种材料系统的重大技术利益可以探索与技术。它们基于近零场磁阻(NZFMR)现象,涉及多个电子输运现象中发生的磁场诱导变化的基于自旋的量子效应。由于这些基于自旋的变化受到基本理解的自旋-自旋相互作用(如电子-核超精细相互作用或电子-电子偶极相互作用)的强烈影响,因此这种NZFMR响应具有相当大的分析能力。NZFMR技术可以有效地应用于基于多种材料体系的器件结构,其中包括二氧化硅、硅、碳化硅、氮化硅和用于层间电介质的非晶SiOC:H薄膜。
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引用次数: 0
Integrated Test Circuit for Off-State Dynamic Drain Stress Evaluation 非状态动态排水应力评估集成测试电路
Pub Date : 2023-03-01 DOI: 10.1109/IRPS48203.2023.10117885
J. Hai, F. Cacho, X. Federspiel, T. Garba-Seybou, A. Divay, E. Lauga-Larroze, J. Arnould
Dynamic off-state stress for RF applications is investigated via integrated test circuits to enable GHz level testing. We have performed characterization of test circuits to ensure the dynamic stress signal waveform integrity, which is verified against model simulation data. We report a x2 gain on time-to-breakdown at 1GHz against DC TDDB off-state stress. Based on extraction of $boldsymbol{mathrm{I}_{text{Dlin}}}$ degradation, no frequency effect is observed from DC to 1GHz off-state stress conditions. Modeling of on-state and off-state interactions based on sum of degradations modes is then demonstrated and supported by experimental data.
通过集成测试电路研究射频应用的动态非状态应力,以实现GHz级测试。我们对测试电路进行了表征,以确保动态应力信号波形的完整性,并通过模型仿真数据进行了验证。我们报告在1GHz下对直流TDDB非状态应力的击穿时间增益为x2。基于$boldsymbol{ maththrm {I}_{text{Dlin}}}$退化的提取,从直流到1GHz的非状态应力条件下,没有观察到频率效应。基于退化模式总和的状态和非状态相互作用的建模随后得到了实验数据的证明和支持。
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引用次数: 0
期刊
2023 IEEE International Reliability Physics Symposium (IRPS)
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