Monte Carlo transport simulation of velocity undershoot in zinc blende and wurtzite InN

Monte Carlo transport simulation of velocity undershoot in zinc blende and wurtzite InN
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闪锌矿和纤锌矿 InN 中速度下冲的蒙特卡罗输运模拟

DOI:
10.1002/pssb.201248080
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发表时间:
2012-09
期刊:
Physica Status Solidi. B: Basic Research
影响因子:
--
通讯作者:
Zhuo, Qingqing
Zhuo, Qingqing
中科院分区:
其他
文献类型:
--
作者:
Wang, Shulong;Liu, Hongxia;Gao, Bo;Zhuo, Qingqing

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通过系综蒙特卡罗 (EMC) 计算研究了闪锌矿 (ZB) 和纤锌矿 (WZ) InN 中的速度下冲。结果表明,速度下冲是由于与动量相比能量弛豫时间相对较长而引起的。本文提出了大范围电场的蒙特卡罗输运模拟。结果表明,当电场随时间和空间快速变化时,与速度过冲相比,速度下冲对电子输运的影响更大。 WZ和ZB InN的对比研究表明,WZ InN由于其优异的电子传输性能,在器件应用中更具优势。
Velocity undershoot in zinc blende (ZB) and wurtzite (WZ) InN is investigated by ensemble Monte Carlo (EMC) calculation. The results show that velocity undershoot arises from the relatively long energy relaxation time compared with momentum. Monte Carlo transport simulations over wide range of electric fields is presented in the paper. The results show that velocity undershoot impacts the electron transport greatly, compared with velocity overshoot, when the electric field changes quickly with time and space. A comparison study between WZ and ZB InN shows that WZ InN has more advantages in device applications due to its excellent electron transport properties.
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