共查询到16条相似文献,搜索用时 357 毫秒
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针对GaAlAs红外发光二极管(IRLED) 随机电报信号(Random Telegraph Signal, RTS)噪声不易测量的特点,提出了一种自动温控RTS噪声测试新方法。通过分析GaAlAs IRLED的RTS噪声产生机理及特性,建立了GaAlAs IRLED的RTS噪声模型,对噪声测试的基本条件进行深入分析,并设计了自动温控测试系统。在10K的温度下对GaAlAs IRLED的RTS噪声进行测试,实验表明,该方法能准确的测量GaAlAs IRLED的RTS噪声,得到与噪声模型一致的结果,为GaAlAs IRLED可靠性的噪声表征提供了实验与理论依据。 相似文献
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围绕降低沟槽型SOI LDMOS功率器件的优值,提出了一种新型多栅沟槽 SOI LDMOS器件(MG-TMOS)。与常规沟槽型SOI LDMOS(C-TMOS)器件相比,新型MG-TMOS器件在不牺牲击穿电压的同时,降低了器件开关切换时充放电的栅漏电荷和器件的比导通电阻。这是因为:1) 新型MG-TMOS器件沟槽里的保护栅将器件的栅漏电容转换为器件的栅源电容和漏源电容,大幅度降低了器件的栅漏电荷;2) 保护栅偏置电压的存在使得器件导通时会在沟槽底部形成一层低阻积累层,从而降低器件的导通电阻。仿真结果表明:该新型沟槽型SOI LDMOS器件的优值从常规器件的503.4 mΩ·nC下降到406.6 mΩ·nC,实现了器件的快速关断。 相似文献
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一个连续且解析的SOI LDMOS表面势模型 总被引:1,自引:1,他引:0
提出了一个实现全耗尽与部分耗尽自动转换的体接触SOI LDMOS连续解析表面势模型.采用PSP的精确表面势算法求解SOI器件的表面势方程,得到了解析的以栅压和漏压为变量的SOI器件正、背硅/氧化层界面的表面势.修正了全耗尽状态下的反型层电荷和体电荷表达式,结合PSP的模型方程,给出连续解析的体接触SOI LDMOS直流模型.仿真结果与实验数据比较,二者吻合得很好,表明该模型能精确表征SOI LDMOS直流特性. 相似文献
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This work reports on a comprehensive process of trapping centers in Silicon nanocrystal (nc-Si) memories devices. The trap centers have been studied using Random Telegraph Signal (RTS) and Low Frequency (LF) techniques. The study of the traps which are responsible for RTS noise in non-volatile memories (NVM) devices as a function of gate voltage and temperature, offers the opportunity of studying the trapping/detrapping behaviour of a single interface trap center. The RTS parameters of the devices having random discrete fluctuations in the drain current get more information about trap energy level and spatial localization from the SiO2/Si interface. The impact of trap centers has been also investigated showing the significant noise between memories and references devices. Furthermore, it has convincingly been shown that this discrete switching of the drain current between a high and a low state is the basic feature responsible for l/fγ flicker noise in MOSFETs transistors. 相似文献
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This work presents a theoretical and experimental study on the gate current 1/f noise in Al Ga N/Ga N HEMTs. Based on the carrier number fluctuation in the two-dimensional electron gas channel of Al Ga N/Ga N HEMTs, a gate current 1/f noise model containing a trap-assisted tunneling current and a space charge limited current is built. The simulation results are in good agreement with the experiment. Experiments show that, if Vg Vx, gate current 1/f noise comes from not only the trap-assisted tunneling RTS, but also the space charge limited current RTS. This indicates that the gate current 1/f noise of the Ga N-based HEMTs device is sensitive to the interaction of defects and the piezoelectric relaxation. It provides a useful characterization tool for deeper information about the defects and their evolution in Al Ga N/Ga N HEMTs. 相似文献
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Speed enhancement effects by using a high-permittivity gate insulator in SOI MOSFETs and its limitation were investigated by a two-dimensional device simulator and circuit simulator. The SOI structure is suitable to have excellent current drive by using a high-permittivity gate insulator. Although the gate capacitance increases as a function of its dielectric constant, the current drive does not increase proportionally due to the inversion capacitance. According to the simulation results of the delay time, when the pulse waveforms driven by a CMOS inverter are propagated through 1 mm-long interconnects, the delay time significantly reduces at a dielectric constant value of around 25 (Ta2O5). Thus, it is worthwhile using Ta2O5 for gate insulator to achieve high-speed operation. Furthermore, the reduction of source parasitic series resistance is a key issue to realize the highest current drive by using a high-permittivity gate insulator in SOI MOSFET 相似文献