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Negative Capacitance Vertical Dopingless TFET and Its Analog/RF Analysis Using Interface Trap Charges 负电容垂直无掺杂TFET及其基于界面陷阱电荷的模拟/射频分析
IF 2.5 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2025-01-23 DOI: 10.1109/TDMR.2025.3533004
Vibhash Choudhary;Sachin Agrawal;Manoj Kumar;Madhulika Verma
The increasing demand for low-power devices has developed a huge interest in the Tunnel Field-Effect Transistor (TFET). However, challenges such as low ON current (I $_{text {ON}}$ ) and random dopant fluctuations limit its demand. To address these limitations, this paper proposed a charge plasma based ferroelectric negative capacitance vertical dopingless TFET (NC-VDL-TFET). In the proposed device, initially, dielectric engineering and architectural modification are used to improve the ION. The simulation result shows that these modifications increased the ION by 16.13%. Afterwards, a silicon-doped HfO2 ferroelectric material is employed above the gate oxide, which results in further improvement of 96.63% in ION. The overall simulation results demonstrate a significant improvement in DC and analog/RF characteristics at a low voltage supply (V $_{text {DS}} = 0.3$ V), making the proposed device a potential candidate for future integrated circuits. Further, a detailed investigation of interface trap charges (ITCs) on the proposed device is analysed for reliability purposes. The simulated results performed for Analog/RF analysis show the proposed device is immune towards the impact of ITCs.
随着对低功耗器件需求的不断增长,人们对隧道场效应晶体管(TFET)产生了极大的兴趣。然而,诸如低导通电流(I $_{text {ON}}$)和随机掺杂剂波动等挑战限制了其需求。为了解决这些限制,本文提出了一种基于电荷等离子体的铁电负电容垂直无掺杂TFET (NC-VDL-TFET)。在该装置中,首先采用介电工程和结构修改来改善离子。仿真结果表明,这些改进使离子浓度提高了16.13%。随后,在栅极氧化物上方加入掺杂硅的HfO2铁电材料,离子进一步提高了96.63%。整体仿真结果表明,在低电压电源(V $_{text {DS}} = 0.3$ V)下,该器件的直流和模拟/RF特性显著改善,使其成为未来集成电路的潜在候选器件。此外,为了可靠性的目的,对拟议装置上的界面陷阱电荷(ITCs)进行了详细的调查分析。模拟/射频分析的模拟结果表明,所提出的器件不受ITCs的影响。
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引用次数: 0
2024 Index IEEE Transactions on Device and Materials Reliability Vol. 24 器件与材料可靠性学报,第24卷
IF 2.5 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2025-01-14 DOI: 10.1109/TDMR.2025.3528093
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引用次数: 0
Comprehensive TCAD-Based Single Event Effect Study of TFET-Based 1T DRAM and Crossbar Memory Array 基于tfet的1T DRAM和横杆存储器阵列单事件效应综合研究
IF 2.5 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2025-01-13 DOI: 10.1109/TDMR.2025.3528903
Dhananjay Prakash;Neha Kamal;Avinash Lahgere
In this paper, a comprehensive TCAD-based single event effect (SEE) study on tunnel field effect transistor (TFET) based one transistor dynamic random access memory (1T DRAM) and crossbar memory array is demonstrated through well-calibrated 2-D TCAD simulations. The simulation study reveals that the regions near Gate 2 are more susceptible to SEE. In addition, in comparison to without SEE, when a high energy particle (HEP) strikes the device, the read “1” (R1) current remains the same, however, the read “0” (R0) current increases $sim ~10times $ at 358 K. As a result, the read current ratio (IR1/I $_{mathrm {R0}}$ ) and the sense margin (SM) decreases. The IR1/IR0 ratio with SEE is found to be $sim ~10^{2}$ , which is $10times $ lower than ratio without SEE. In addition, the impact of various parameters such as linear energy transfer (LET), HEP strike time, HEP strike moment, and HEP radius on TFET-based 1T DRAM performance is also evaluated. Moreover, for a 2 x 2 crossbar memory array, the combination of SEE with word line disturbance mechanism causes $sim ~10times $ reduction in the R1 current at 358 K. Our findings will pave the way for further exploration and designing radiation-hardened TFET-based 1T DRAM for future low-power space applications.
本文通过校准良好的二维TCAD仿真,对基于隧道场效应晶体管(TFET)的单晶体管动态随机存取存储器(1T DRAM)和交叉棒存储器阵列进行了全面的TCAD单事件效应(SEE)研究。仿真研究表明,靠近2号门的区域更容易受到SEE的影响。此外,与未使用SEE相比,当高能粒子(HEP)撞击器件时,读取的“1”(R1)电流保持不变,而读取的“0”(R0)电流在358k时增加了10倍。因此,读电流比(IR1/I $_{mathrm {R0}}$)和感测余量(SM)减小。有SEE的IR1/IR0比值为$ $ sim ~10^{2}$,比没有SEE的IR1/IR0比值低$ $10 $ $。此外,还评估了线性能量传递(LET)、HEP打击时间、HEP打击力矩和HEP半径等参数对基于tfet的1T DRAM性能的影响。此外,对于2 × 2交叉棒存储器阵列,SEE与字线干扰机制的结合使R1电流在358k时降低了10倍。我们的研究结果将为进一步探索和设计基于tfet的抗辐射1T DRAM铺平道路,用于未来的低功耗空间应用。
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引用次数: 0
Cryogenic Total Ionizing Dose Effects and Annealing Behaviors of SiGe HBTs SiGe HBTs的低温总电离剂量效应和退火行为
IF 2.5 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2025-01-01 DOI: 10.1109/TDMR.2024.3523303
Jianan Wei;Peijian Zhang;Xiaohui Yi;Min Hong;Xiaojun Fu;Xinyue Tang;Kun Qian;Xiaolei Zhang;Wenlong Liao;Jiandong Zang;Lei Zhang;Ting Luo;Yunchen Wu
The total ionizing dose (TID) responses of $0.35~mu $ m and $0.13~mu $ m SiGe HBTs at liquid-nitrogen temperature (78 K) were investigated using 10 keV X-rays. For the first time, we compared the annealing behaviors of SiGe HBTs irradiated at 78 K and room temperature (297 K). The results reconfirm that SiGe HBTs have superior TID tolerance up to Mrad(Si) levels, and the current gain degradation of DUTs irradiated at 78 K is much less than those irradiated at 297 K. However, the $0.35~mu $ m SiGe HBTs irradiated at 78 K show further degradation after room temperature annealing (RTA) due to the thermal activation of oxide charge migration and the long-term buildup of interface traps. The $0.13~mu $ m SiGe HBTs irradiated at 78 K show minor change after RTA, which can be attributed to the competition between interface trap creation and annealing.
用10 keV x射线研究了液氮温度(78 K)下$0.35~mu $ m和$0.13~mu $ m SiGe HBTs的总电离剂量(TID)响应。我们首次比较了78 K和297 K下SiGe HBTs的退火行为,结果再次证实了SiGe HBTs在Mrad(Si)水平下具有优越的TID耐受性,并且78 K下的电流增益衰减远小于297 K下的。然而,在78 K下辐照的$0.35~mu $ m SiGe HBTs在室温退火(RTA)后,由于氧化物电荷迁移的热激活和界面陷阱的长期积累,表现出进一步的降解。78 K下辐照的$0.13~mu $ m SiGe HBTs在RTA后变化不大,这可归因于界面陷阱产生和退火之间的竞争。
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引用次数: 0
Degradation Behavior and Mechanism of SONOS FLASH by Total Ionization Dose Effects 总电离剂量效应对SONOS FLASH的降解行为及机理研究
IF 2.5 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-12-30 DOI: 10.1109/TDMR.2024.3524100
Y. D. Wei;G. Z. Liu;J. H. Wei;W. Zhao;Y. Q. Wei;Y. Zhou;Z. Y. Sui;M. J. Liu;H. Ju;Y. Gao;H. Yang;J. P. Sun;Y. Liu
In this paper, the 2T SONOS FLASH is designed and fabricated based on 180 nm embedded FLASH process which includes one MOSFET and one SONOS FLASH transistor. The FLASH transistors are programmed and erased by band-to-band tunneling-induced hot electron and Fowler-Nordheim to realize different levels, and the mechanisms of the electrical degradation caused by radiation are investigated by the mid-gap technique. In order to clarify the degradation mechanism from the physical level, the first principle calculations are performed from the atomic and electronic term. The electric fields and the external environment are proved to play a crucial role in the charge loss. The higher electric fields can exacerbate the formation of the oxide charge, and the anti-radiation hardness can be achieved with oxygen-rich environment. The external field can efficiently change the electronic properties of $alpha $ -SiO2 with oxygen vacancy and hydrogen. This study provides a novel perspective of electrical degradations on the SONOS FLASH unit in different levels from both the experiments and theoretical simulations, which can be helpful for the design of advanced computational chips in space.
本文基于180nm嵌入式FLASH工艺,设计和制作了2T SONOS FLASH,其中包括一个MOSFET和一个SONOS FLASH晶体管。采用带间隧道诱导热电子和Fowler-Nordheim对FLASH晶体管进行编程和擦除,实现不同层次的擦除,并利用中隙技术研究了辐射引起的电退化机理。为了从物理层面上阐明降解机理,从原子和电子的角度进行了第一性原理计算。电场和外界环境对电荷损失起着至关重要的作用。较高的电场会加剧氧化电荷的形成,在富氧环境下可以达到抗辐射硬度。外加电场可以有效地改变$alpha $ -SiO2的氧空位和氢的电子性质。本研究从实验和理论模拟两方面为SONOS FLASH单元在不同程度上的电退化提供了新的视角,可为先进空间计算芯片的设计提供帮助。
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引用次数: 0
AdAM: Adaptive Approximate Multiplier for Fault Tolerance in DNN Accelerators 深度神经网络加速器容错的自适应近似乘法器
IF 2.5 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-12-27 DOI: 10.1109/TDMR.2024.3523386
Mahdi Taheri;Natalia Cherezova;Samira Nazari;Ali Azarpeyvand;Tara Ghasempouri;Masoud Daneshtalab;Jaan Raik;Maksim Jenihhin
Deep Neural Network (DNN) hardware accelerators are essential in a spectrum of safety-critical edge-AI applications with stringent reliability, energy efficiency, and latency requirements. Multiplication is the most resource-hungry operation in the neural network’s processing elements. This paper proposes a scalable adaptive fault-tolerant approximate multiplier (AdAM) tailored for ASIC-based DNN accelerators at the algorithm and circuit levels. AdAM employs an adaptive adder that relies on an unconventional use of input Leading One Detector (LOD) values for fault detection by optimizing unutilized adder resources. A gate-level optimized LOD design and a hybrid adder design are also proposed as a part of the adaptive multiplier to improve the hardware performance. The proposed architecture uses a lightweight fault mitigation technique that sets the detected faulty bits to zero. The hardware resource utilization and the DNN accelerator’s reliability metrics are used to compare the proposed solution against the Triple Modular Redundancy (TMR) in multiplication, unprotected exact multiplication, and unprotected approximate multiplication. It is demonstrated that the proposed architecture enables a multiplication with a reliability level close to the multipliers protected by TMR while at the same time utilizing $2.74 times $ less area and with 39.06% less power-delay product compared to the exact multiplier. Moreover, it has similar area, delay, and power consumption parameters compared to the state-of-the-art approximate multipliers with similar accuracy while providing fault detection and mitigation capability.
深度神经网络(DNN)硬件加速器在一系列具有严格可靠性、能效和延迟要求的安全关键型边缘人工智能应用中至关重要。乘法运算是神经网络处理元素中最耗费资源的运算。本文提出了一种可扩展的自适应容错近似乘法器(AdAM),在算法和电路层面上为基于asic的深度神经网络加速器量身定制。AdAM采用自适应加法器,通过优化未利用的加法器资源,非常规地使用输入先导检测器(LOD)值进行故障检测。为了提高自适应乘法器的硬件性能,还提出了门级优化LOD设计和混合加法器设计。提出的体系结构使用轻量级故障缓解技术,将检测到的故障位设置为零。利用硬件资源利用率和DNN加速器的可靠性指标,将提出的解决方案与三模冗余(TMR)的乘法、无保护的精确乘法和无保护的近似乘法进行了比较。结果表明,所提出的结构使乘法具有接近TMR保护的乘法器的可靠性水平,同时使用的面积比精确乘法器少2.74倍,功耗延迟积比精确乘法器少39.06%。此外,与最先进的近似乘法器相比,它具有相似的面积、延迟和功耗参数,具有相似的精度,同时提供故障检测和缓解能力。
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引用次数: 0
Mission Profile-Based Hotspot Temperature and Lifespan Estimation of DC-Link Capacitors Used in Automotive Traction Inverters 基于任务剖面的汽车牵引逆变器直流电容热点温度和寿命估算
IF 2.5 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-12-27 DOI: 10.1109/TDMR.2024.3523341
Kaining Kuang;Xinhua Guo;Zhengyan Zhou;Chunzhen Li;Xiuwan Li
In electric vehicles (EVs), film capacitors are installed in the traction inverter to reduce ripple current. However, the lifespan of commercial film capacitors is highly sensitive to temperature fluctuations. The high ambient temperature within the traction inverter often leads to the premature failure of these capacitors, severely impacting the reliability of the traction drive system. In existing studies, the internal losses of capacitors have often been treated as constant, overlooking variations caused by changes in operating conditions and aging, which results in discrepancies between predicted and actual lifespans. This paper first proposes a new finite element analysis (FEA) modelling strategy to more accurately determine the hotspot temperature rise by considering the distribution of losses within the capacitor core. Next, based on the Federal Testing Procedure -75 (FTP-75) driving cycle, the operating profile of capacitors during EV operation is obtained. Following that, the cumulative damage of the capacitor is evaluated according to Miner’s rule, and the lifespan of the film capacitors is assessed. This method can offer a reference for capacitor replacements planning.
在电动汽车中,在牵引逆变器中安装薄膜电容器以减小纹波电流。然而,商用薄膜电容器的寿命对温度波动非常敏感。牵引逆变器内部的高环境温度经常导致这些电容器过早失效,严重影响牵引驱动系统的可靠性。在现有的研究中,电容器的内部损耗通常被视为常数,忽略了由操作条件变化和老化引起的变化,这导致了预测寿命与实际寿命之间的差异。本文首先提出了一种新的有限元分析(FEA)建模策略,通过考虑电容器铁芯内损耗的分布来更准确地确定热点温升。其次,基于联邦测试程序-75 (FTP-75)驾驶循环,得到电动汽车运行过程中电容器的工作曲线。然后,根据Miner法则对电容器的累积损伤进行评估,并对薄膜电容器的寿命进行评估。该方法可为电容器更换规划提供参考。
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引用次数: 0
Radiation Hardened SOI LDMOS With Dual P-Type Layers Shielding Irradiation Charge Field 双p型层屏蔽辐照电荷场的辐射硬化SOI LDMOS
IF 2.5 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-12-27 DOI: 10.1109/TDMR.2024.3523577
Xin Zhou;Jie Shen;Ziqiu Tong;Zhao Qi;Ming Qiao;Zhaoji Li;Bo Zhang
In this paper, a novel radiation hardened SOI LDMOS with dual P-type layers is proposed. Based on irradiation charge field modulation, two P-type layers are introduced at the surface and bottom in N-drift region for suppressing shifts of both specific on-resistance $(R_{textrm {on,sp}})$ and breakdown voltage (BV). Irradiation charge field is shielded by the P-type layers at low drain voltage and electron behavior in the bulk is protected against the modulation, resulting in $R_{textrm {on,sp}}$ shifting less significantly. Besides, net charge density in drift region is reduced by the P-type layers, and then surface electric field is weakened at source side, resulting in a non-monotonic shift in BV. A low net charge density with high donor doping concentration in P-N-P drift region is pursued instead of charge balance required in traditional design. Simulated optimized results show that $R_{textrm {on,sp}}$ shifts only 11.4% at TID ${=} 300$ krad(Si).
本文提出了一种具有双p型层的新型抗辐射SOI LDMOS。基于辐照电荷场调制,在n漂移区表面和底部引入了两个p型层,以抑制比导通电阻$(R_{textrm {on,sp}})$和击穿电压(BV)的位移。在低漏极电压下,p型层屏蔽了辐照电荷场,保护了体中的电子行为不受调制的影响,使得$R_{textrm {on,sp}}$的位移不明显。此外,p型层降低了漂移区的净电荷密度,从而使源侧的表面电场减弱,导致BV发生非单调位移。在P-N-P漂移区追求低净电荷密度和高给体掺杂浓度,而不是传统设计所要求的电荷平衡。模拟优化结果表明,当TID ${=} 300$ krad(Si)时,$R_{textrm {on,sp}}$偏移量仅为11.4%。
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引用次数: 0
TechRxiv: Share Your Preprint Research with the World! techxiv:与世界分享你的预印本研究!
IF 2.5 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-12-23 DOI: 10.1109/TDMR.2024.3520737
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引用次数: 0
IEEE Transactions on Device and Materials Reliability Publication Information IEEE器件与材料可靠性学报
IF 2.5 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-12-23 DOI: 10.1109/TDMR.2024.3516717
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引用次数: 0
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