Stress evolution and its effects on detection performance of self-rolled quantum well infrared detector
Received:July 13, 2020  Revised:January 07, 2021  download
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Author NameAffiliationE-mail
ZHANG Fei College of Ocean Science and Engineering Shanghai Maritime University Shanghai 201306 China
Department of Materials Science State Key Laboratory of ASIC and Systems Fudan University Shanghai 200433China
Shanghai Engineering Technology Research Centre of Deep Offshore Material Shanghai Maritime University Shanghai 201306 China 
zhangfei@shmtu.edu.cn 
HUANG Gao-Shan Department of Materials Science State Key Laboratory of ASIC and Systems Fudan University Shanghai 200433China gshuang@fudan.edu.cn 
NIE Xiao-Fei State Key Laboratory of Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083China  
ZHEN Hong-Lou State Key Laboratory of Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083China  
MEI Yong-Feng Department of Materials Science State Key Laboratory of ASIC and Systems Fudan University Shanghai 200433China  
FAN Run-Hua College of Ocean Science and Engineering Shanghai Maritime University Shanghai 201306 China
Shanghai Engineering Technology Research Centre of Deep Offshore Material Shanghai Maritime University Shanghai 201306 China 
 
Abstract:In this study, we investigate the stress evolution and its effects on detection performance of self-rolled quantum well infrared detector. It is found that tensile stress can move the energy level of conduction band up, while compressive stress moves it down. The band movement of self-rolled film with double quantum wells depends on the change of resultant stresses in the two quantum wells. The rolled-up sample can effectively transform the stress change into strain, so as to weaken the impact of ambient temperature and enhance the stability of infrared devices. The wrinkled film has higher compressive stress compared with the rolled-up sample, which results in lower responsivity. When the same bias voltage is applied, the voltage responsivity of the rolled-up sample is about 2.5 times higher than that of the wrinkled sample.
keywords:quantum well infrared detector  rolled-up film  photoluminescence spectrum  stress  responsivity
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Copyright:《Journal of Infrared And Millimeter Waves》