Effects of Voltage and Temperature on Photoelectric Properties of Rolled-Up Quantum Well Nanomembranes

被引：0
|
作者：
Fei Zhang
Gaoshan Huang
Yongfeng Mei
Runhua Fan
机构：
[1] Shanghai Maritime University,College of Ocean Science and Engineering
[2] Fudan University,Department of Materials Science
[3] Shanghai Maritime University,Shanghai Engineering Technology Research Centre of Deep Offshore Material
来源：
Journal of Electronic Materials | 2021年 / 50卷
关键词：
Rolled-up nanomembrane; energy band; photorepsonse; thermal effect;
D O I：
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中图分类号：
学科分类号：
摘要：
Rolled-up quantum well (QW) nanomembranes with different diameters are prepared using the lift-off method. The structural evolution and the influences of voltage and temperature on the photoelectric properties of the nanomembranes are investigated. We find that a QW in tensile status can enhance the photorepsonse by about 2.1 times, and a QW in compressive status leads to a decrease of photorepsonse to ~ 65%. With increasing temperature, the gap between the ground state and excited state in the conduction band decreases with a rate of ~ 0.008 meV/K and the thermal effect mainly affects the shift of conduction band. For a working rolled-up device, the change of band gap due to the thermal effect from the applied voltage is negligible.
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页码：3111 / 3115
页数：4
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