钝化
纳米线
材料科学
铁电性
场效应晶体管
晶体管
光电子学
砷化铟
纳米技术
砷化镓
电气工程
电压
图层(电子)
工程类
电介质
作者
Rui Shen,Yifan Jiang,Xuan Li,Jiaojiao Tian,Shuo Li,Tong Li,Qing Chen
出处
期刊:ACS applied electronic materials
[American Chemical Society]
日期:2022-10-14
卷期号:4 (10): 5008-5016
被引量:4
标识
DOI:10.1021/acsaelm.2c01005
摘要
Indium arsenide (InAs) nanowire (NW) is a promising semiconductor material in modern electronic and optoelectronic devices due to its fascinating properties such as narrow direct band gap, high mobility, etc. However, the surface and interface properties are the major factors limiting the performance of InAs NW devices. Here, we demonstrate an approach to improve the performance of InAs NW field-effect transistor (FET) by passivating the NW surface with ferroelectric polymer poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)). After the ferroelectric film coating, the maximum field-effect mobility reaches 6547 cm2 V–1 s–1 and the minimum subthreshold swing is 178 mV dec–1, which is the best performance among the reported InAs NW FET with global back-gated structure. Additionally, synaptic behavior is observed for the first time in an InAs NW FET with P(VDF-TrFE) passivation. Typical synaptic functions are successfully simulated, including postsynaptic current (PSC), paired-pulse facilitation (PPF), and multiple-spike response. In addition, the energy consumption of our synaptic devices is only 230 fJ per synaptic event at 0.1 V, approaching the biological synapse level (∼10 fJ). This work is of great significance for developing low-power, high-speed, and biomimetic plasticity artificial synapses based on III–V NWs.
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