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2021 IEEE Latin America Electron Devices Conference (LAEDC)最新文献

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Six Decades of Research on 2D Materials: Progress, Dead Ends, and New Horizons 二维材料的六十年研究:进展、死胡同和新视野
Pub Date : 2021-04-19 DOI: 10.1109/LAEDC51812.2021.9437918
F. Schwierz, M. Ziegler
The present paper guides the reader through six decades of research on 2D materials. It is shown that after a slow start and only little activity over many years, since 2004 the exploration of 2D materials advanced at an enormous pace. Our discussion focuses on the use of 2D materials for electronics and indicates that part of them are attractive for electronic devices. While some of the high expectations raised in what we call the golden era of graphene did not fulfil, certain electronic applications for 2D materials that originally were not on the agenda gain increasing attention now. Examples are stacked-channel 2D nanosheet transistors and 2D memristive devices.
本论文引导读者通过六十年的研究二维材料。这表明,经过多年缓慢的开始和很少的活动,自2004年以来,二维材料的探索取得了巨大的进展。我们的讨论集中在电子产品的二维材料的使用上,并指出其中一部分对电子设备具有吸引力。虽然在我们所谓的石墨烯黄金时代提出的一些高期望并没有实现,但某些最初不在议程上的二维材料的电子应用现在得到了越来越多的关注。例如堆叠通道二维纳米片晶体管和二维忆阻器件。
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引用次数: 3
Development of Multi-physics Modeling of Plasmonics in the UV Region Using Transition Metals 利用过渡金属建立紫外区等离子体多物理场模型的研究进展
Pub Date : 2021-04-19 DOI: 10.1109/LAEDC51812.2021.9437940
M. K., M. J. Reddy, K. P. Pradhan, Tejendra Dixit
Herein, we report the effect of parametric variations on the plasmonic behavior of the transition metals i.e. Pd, Rh, Cr. UV plasmonics is critical for many applications like bio-molecule detection, surface-enhanced spectroscopies, photothermal therapies, photonic integrated circuits, etc especially in the UV region. Noble metals like Au, Ag, Pt are restricted to the visible region. Only there are very limited candidates for UV plasmonics viz. Al, Pt, etc. In order to explore prominent candidates for the UV region, the plasmonic properties of transition metals like Cr, Rh and Pd have been systematically studied. Rh has been found as a strong contender in the deep UV region. Particle size variation studies suggested that selectivity can be introduced in metals like Rh and Pd. This work will provide new insights in the development of UV plasmonics.
在此,我们报告了参数变化对过渡金属(Pd, Rh, Cr)等离子体行为的影响。紫外等离子体对于许多应用至关重要,如生物分子检测,表面增强光谱,光热治疗,光子集成电路等,特别是在紫外区域。贵金属如Au, Ag, Pt都局限于可见光区域。只有非常有限的候选紫外等离子体,如Al, Pt等。为了探索紫外区的突出候选者,系统地研究了Cr、Rh和Pd等过渡金属的等离子体性质。Rh在深紫外区被发现是一个强有力的竞争者。粒度变化研究表明,选择性可以引入金属,如铑和钯。这项工作将为紫外等离子体的发展提供新的见解。
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引用次数: 1
Semiconductor materials and devices for medical and environmental applications 用于医疗和环境应用的半导体材料和器件
Pub Date : 2021-04-19 DOI: 10.1109/LAEDC51812.2021.9437925
E. Gutiérrez-D.
Several materials used for the fabrication of semiconductor devices possess electrical, chemical, mechanical, magnetic, thermal, and physical properties in general that can be used for applications far beyond regular electron devices. In this work I introduce various materials and devices that are used as medical, agricultural, or environmental instrumentation that serves the purpose of helping humanity. This is the case of pH sensors for water quality and food production applications, or atomic-size thin layers and plasmonic devices for COVID-19 and biological applications.
用于制造半导体器件的几种材料通常具有电、化学、机械、磁、热和物理性质,可用于远远超出常规电子器件的应用。在这项工作中,我介绍了各种材料和设备,用于医疗,农业或环境仪器,服务于帮助人类的目的。用于水质和食品生产应用的pH传感器,或用于COVID-19和生物应用的原子尺寸薄层和等离子体器件就是这种情况。
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引用次数: 0
Improved Device Performance of Polarity Controllable–Ferroelectric–Field Effect Transistor Under the Influence of Fixed Trap Charges 固定陷阱电荷影响下极性可控铁电场效应晶体管器件性能的改善
Pub Date : 2021-04-19 DOI: 10.1109/LAEDC51812.2021.9437921
P. Pandey, H. Kaur
In the present work, a detailed study has been carried out to examine the impact of fixed trap charges (FTC) on Polarity Controllable–Ferroelectric–Field Effect Transistor (PC-FE-FET). The device performance has been explored exhaustively and various characteristics such as potential, gain, total gate capacitance, subthreshold swing, threshold voltage and drain induced barrier lowering have been studied for both fresh and damaged devices. Due to presence of ferroelectric layer, the proposed device shows superior device performance over conventional device for both n- and p- operational modes. It has been demonstrated that n- mode device with negative trap charges (NTC) and p- mode device with positive trap charges (PTC) exhibits excellent steep subthreshold characteristics in comparison to fresh device in the presence of trap charges thereby implying that the proposed PC-FE-FET exhibits better performance and offers more reliability towards FTC in comparison to conventional device.
在本工作中,详细研究了固定陷阱电荷(FTC)对极性可控铁电场效应晶体管(PC-FE-FET)的影响。对器件的性能进行了全面的研究,并研究了新器件和损坏器件的各种特性,如电势、增益、总栅极电容、亚阈值摆幅、阈值电压和漏极感应势垒降低。由于铁电层的存在,该器件在n-和p-工作模式下均表现出优于传统器件的器件性能。研究表明,与存在陷阱电荷的新器件相比,具有负陷阱电荷(NTC)的n模器件和具有正陷阱电荷(PTC)的p模器件表现出优异的陡峭亚阈值特性,这意味着与传统器件相比,所提出的PC-FE-FET具有更好的性能,并且对FTC具有更高的可靠性。
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引用次数: 0
Assessment of RF compact modelling of FD SOI transistors FD SOI晶体管射频紧凑模型的评估
Pub Date : 2021-04-19 DOI: 10.1109/LAEDC51812.2021.9437955
M. Vanbrabant, L. Nyssens, V. Kilchytska, J. Raskin
In this work, the compact model for FD SOI transistors and its limitations are assessed by comparing Spectre simulations to experimental measurements in a wide range of frequencies. The impact of two phenomena, namely self-heating (SH) and substrate effect (SE), on the frequency response of output conductance and capacitance and their respective modelling are studied. This work shows that the present version of compact model is not sufficient to accurately model the experimentally observed transitions in the output conductance and capacitance frequency response related to these two phenomena.
在这项工作中,通过将Spectre模拟与广泛频率范围内的实验测量进行比较,评估了FD SOI晶体管的紧凑模型及其局限性。研究了自热(SH)和衬底效应(SE)两种现象对输出电导和电容频率响应的影响及其各自的建模。这项工作表明,目前的紧凑模型不足以准确地模拟实验观察到的与这两种现象相关的输出电导和电容频率响应的转变。
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引用次数: 0
Impact of Hole Blocking Layer on the Performance of Solution-Processed Small Molecule Solar Cells 孔阻挡层对溶液处理小分子太阳能电池性能的影响
Pub Date : 2021-04-19 DOI: 10.1109/LAEDC51812.2021.9437931
M. Ramírez-Como, A. Sacramento, José G. Sánchez, M. Estrada, V. S. Balderrama, L. Marsal
In this study, we report the use of poly [(9,9-bis (30- (N,N-dimethylamino) propyl) -2,7-fluorene) -alt-2,7- (9,9-dioctylfluorene) (PFN) as hole blocking layer (HBL) in inverted small-molecule solar cells (SM-iOSCs) using a bulk heterojunction of p-DTS(FBTTh2)2 as donor material and PC70BM as acceptor material. The behavior of these devices is compared to those SM-iOSCs where the HBL was zinc oxide (ZnO). Under 1 sun illumination, devices exhibited a power conversion efficiency (PCE) of 6.75%. It is demonstrated, through analysis of the external quantum efficiency (EQE), abortion UV-vis and atomic force microscopy of the active layer, that charge transport is the limiting factor in the performance of the cells, directly affecting the short circuit current (JSC).
在这项研究中,我们报道了在倒置小分子太阳能电池(SM-iOSCs)中使用聚[(9,9-双(30- (N,N-二甲氨基)丙基)-2,7-(9,9-二辛基芴)(PFN)作为空穴阻塞层(HBL),以p-DTS(FBTTh2)2的体异质结为供体材料,PC70BM为受体材料。将这些器件的行为与HBL为氧化锌(ZnO)的SM-iOSCs进行了比较。在1个太阳光照下,器件的功率转换效率(PCE)为6.75%。通过对活性层的外量子效率(EQE)、流产紫外-可见和原子力显微镜的分析表明,电荷输运是电池性能的限制因素,直接影响到短路电流(JSC)。
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引用次数: 1
Analysis of the ZTC-Point for Vertically Stacked Nanosheet pMOS Devices 垂直堆叠纳米片pMOS器件ztc点分析
Pub Date : 2021-04-19 DOI: 10.1109/LAEDC51812.2021.9437935
Carlos H. S. Coelho, J. Martino, E. Simoen, A. Veloso, P. Agopian
This paper shows an experimental analysis of the zero-temperature coefficient (ZTC) bias point of vertically stacked gate-all-around nanosheet pMOS devices (GAA-NS) for different channel lengths (L), in linear and saturation regions. The gate voltage at ZTC point (VZTC) experimental results are compared with the values obtained by analytical model (CM-ZTC model) in order to evaluate the behavior of the ZTC of the GAA-NS pMOS transistors. The comparison between the data from the CM-ZTC model and the experimental values resulted a difference smaller than 7% when operating in linear region, which means that the behavior of GAA-NS in ZTC point can be well described through the mobility degradation and threshold voltage shift basic models like in planar fully depleted SOI devices. However, in saturation region the difference increases substantially due to the high series resistance, and in case of 28 nm channel devices, due to the short-channel effect (SCE), which is not considered in the analytical model. But the experimental VZTC in saturation region does not change too much (|VZTZ| ≅ 0.75V with standard deviation ≅ 0.06V) for all studied devices (from 200 nm down to 28 nm channel lengths) which means that the GAA-NS is a trusted device for analog circuits biased at ZTC point.
本文对不同通道长度(L)下垂直堆叠栅极-全方位纳米片pMOS器件(GAA-NS)在线性区和饱和区的零温度系数(ZTC)偏置点进行了实验分析。为了评价GAA-NS pMOS晶体管ZTC的性能,将ZTC点栅极电压(VZTC)实验结果与解析模型(CM-ZTC模型)所得值进行了比较。CM-ZTC模型数据与实验数据在线性区域的差异小于7%,说明GAA-NS在ZTC点的行为可以通过平面全耗尽SOI器件的迁移率退化和阈值电压移基本模型很好地描述。然而,在饱和区域,由于串联电阻高,差异显著增加,对于28 nm通道器件,由于短通道效应(SCE),这在分析模型中没有考虑。在200 nm到28 nm的通道长度范围内,饱和区的实验VZTC变化不大(|VZTZ| = 0.75V,标准差= 0.06V),表明GAA-NS是一种可靠的模拟电路偏置ZTC点的器件。
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引用次数: 1
Influence of Dielectrics and Channel Defects on the Electrical Performance of Oxide-based p-Channel TFTs for CMOS Applications 介质和沟道缺陷对氧化物基p沟道tft电性能的影响
Pub Date : 2021-04-19 DOI: 10.1109/LAEDC51812.2021.9437916
Viswanath G. Akkili, R. Thangavel, V. Srivastava
Among the other p-type oxide materials, Tin Monoxide (SnO) is of much attention due to higher hole mobility and ambipolar characteristics. In Thin Film Transistors (TFTs), the channel defects and dielectric material play an important role in the device’s electrical performance. Still, the influence of SnO defects on the TFT performance is poorly understood. This paper analyses the influence of defects in the semiconductor layer and various dielectrics’ impact on the electrical characteristics of the p-channel TFTs using the 2D numerical simulator. Improved numerical simulation of SnO TFT using SiO2, HfO2, and Al2O3 dielectrics have been performed and compared their effect on transfer and output characteristics.
在其他p型氧化物材料中,氧化锡(SnO)由于具有较高的空穴迁移率和双极性特性而备受关注。在薄膜晶体管(TFTs)中,通道缺陷和介质材料对器件的电性能起着重要的作用。然而,人们对SnO缺陷对TFT性能的影响知之甚少。本文利用二维数值模拟器分析了半导体层缺陷和各种介质对p沟道TFTs电学特性的影响。采用SiO2、HfO2和Al2O3介质对SnO TFT进行了改进的数值模拟,并比较了它们对转移和输出特性的影响。
{"title":"Influence of Dielectrics and Channel Defects on the Electrical Performance of Oxide-based p-Channel TFTs for CMOS Applications","authors":"Viswanath G. Akkili, R. Thangavel, V. Srivastava","doi":"10.1109/LAEDC51812.2021.9437916","DOIUrl":"https://doi.org/10.1109/LAEDC51812.2021.9437916","url":null,"abstract":"Among the other p-type oxide materials, Tin Monoxide (SnO) is of much attention due to higher hole mobility and ambipolar characteristics. In Thin Film Transistors (TFTs), the channel defects and dielectric material play an important role in the device’s electrical performance. Still, the influence of SnO defects on the TFT performance is poorly understood. This paper analyses the influence of defects in the semiconductor layer and various dielectrics’ impact on the electrical characteristics of the p-channel TFTs using the 2D numerical simulator. Improved numerical simulation of SnO TFT using SiO2, HfO2, and Al2O3 dielectrics have been performed and compared their effect on transfer and output characteristics.","PeriodicalId":112590,"journal":{"name":"2021 IEEE Latin America Electron Devices Conference (LAEDC)","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133549281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
TCAD Evaluation of the Substrate Bias Influence on the Carrier Transport of Ω-Gate Nanowire MOS Transistors with Ultra-Thin BOX 衬底偏压对Ω-Gate超薄盒纳米线MOS晶体管载流子输运影响的TCAD评估
Pub Date : 2021-04-19 DOI: 10.1109/LAEDC51812.2021.9437923
F. Bergamaschi, M. Pavanello
In this work, the effects of substrate biasing on the electrical behavior of n-type Ω-gate SOI nanowire MOS transistors with thin buried oxide (BOX) and variable fin width are analyzed. The analysis is carried over through 3D TCAD simulations calibrated with experimental data. Mobility degradation is observed for negative back bias due to surface-related scattering mechanisms on the front gate channel, while mobility increase is verified for positive back bias values that induce conduction in both front and back channels. High back bias values, however, which activate the back channel prior to the front one, lead to degradation in carrier mobility. On-state-off-state current ratio reduces for positive back bias due to degradation in the subthreshold slope, while DIBL is worsened due to the reduced front gate control when the substrate’s positive electric field takes ahold of the inversion charges.
本文分析了衬底偏置对具有薄埋氧化物(BOX)和可变翅片宽度的n型Ω-gate SOI纳米线MOS晶体管电学行为的影响。分析通过三维TCAD模拟与实验数据校准进行。由于正门通道上表面相关的散射机制,观察到负背偏压的迁移率下降,而正门偏置值在正门通道和正门通道诱导传导时,迁移率增加。然而,高的后偏置值会在前通道之前激活后通道,从而导致载流子迁移率的降低。由于亚阈值斜率的降低,正偏置的通断电流比降低,而当衬底的正电场控制反转电荷时,由于前门控制减少,DIBL恶化。
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引用次数: 1
Hybrid gate dielectric with Si3N4 stressor for LDMOSFET 用于LDMOSFET的Si3N4应力源杂化栅电介质
Pub Date : 2021-04-19 DOI: 10.1109/LAEDC51812.2021.9437948
S. Nayak, S. Lodha, S. Ganguly
Lateral double diffused MOSFET (LDMOSFET) with Stress engineering has been explored in this work with a calibrated Silicon (Si) simulation deck. Silicon Nitride (Si3N4) layer having intrinsic stress has been used to generate stress in the device. Hybrid gate dielectric with Silicon dioxide (SiO2) and the Si3N4 is used in this study. With the help of simulations (Process, Device and Mixed-mode), we observe the drain current improvement of 6%, decrease in terminal capacitance and specific on-resistance (Ron,sp) and increase in the transition frequency. This method can supplement the existing performance improvement techniques for an LDMOSFET device.
横向双扩散MOSFET (LDMOSFET)与应力工程在这项工作中进行了探索与校准硅(Si)模拟平台。采用具有本征应力的氮化硅(Si3N4)层在器件中产生应力。本研究采用二氧化硅(SiO2)和氮化硅(Si3N4)混合栅介电材料。通过模拟(过程、器件和混合模式),我们观察到漏极电流提高了6%,终端电容和比导通电阻(Ron,sp)降低,过渡频率增加。该方法可以补充现有的LDMOSFET器件的性能改进技术。
{"title":"Hybrid gate dielectric with Si3N4 stressor for LDMOSFET","authors":"S. Nayak, S. Lodha, S. Ganguly","doi":"10.1109/LAEDC51812.2021.9437948","DOIUrl":"https://doi.org/10.1109/LAEDC51812.2021.9437948","url":null,"abstract":"Lateral double diffused MOSFET (LDMOSFET) with Stress engineering has been explored in this work with a calibrated Silicon (Si) simulation deck. Silicon Nitride (Si3N4) layer having intrinsic stress has been used to generate stress in the device. Hybrid gate dielectric with Silicon dioxide (SiO2) and the Si3N4 is used in this study. With the help of simulations (Process, Device and Mixed-mode), we observe the drain current improvement of 6%, decrease in terminal capacitance and specific on-resistance (Ron,sp) and increase in the transition frequency. This method can supplement the existing performance improvement techniques for an LDMOSFET device.","PeriodicalId":112590,"journal":{"name":"2021 IEEE Latin America Electron Devices Conference (LAEDC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133921313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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
2021 IEEE Latin America Electron Devices Conference (LAEDC)
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