High-response formamidine bromide lead hybrid cadmium sulfide photodetector  

作　　者：刘耀 刘磊 张锐峰 杨伟业 刘应开 Yao Liu;Lei Liu;Ruifeng Zhang;Weiye Yang;Yingkai Liu(Institute of Physics and Electronic Information,Yunnan Normal University,Kunming 650500,China;Yunnan Key Laboratory of Optoelectronic Information Technology,Kunming 650500,China;Key Laboratory of Advanced Technique&Preparation for Renewable Energy Materials,Ministry of Education,Yunnan Normal University,Kunming 650500,China)

机构地区：[1]Institute of Physics and Electronic Information,Yunnan Normal University,Kunming 650500,China [2]Yunnan Key Laboratory of Optoelectronic Information Technology,Kunming 650500,China [3]Key Laboratory of Advanced Technique&Preparation for Renewable Energy Materials,Ministry of Education,Yunnan Normal University,Kunming 650500,China

出　　处：《Chinese Optics Letters》2024年第2期159-166,共8页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.12264056 and 62164013);the Yunnan Expert Workstation Project(No.202205AF150008);the High-level Talent Promotion and Training Project of Kunming(No.2022SCP005)。

摘　　要：Organic-inorganic hybrid perovskite formamidinium lead bromide nanosheet(FAPb Br_(3)NS)is regarded as a superior substance used to construct optoelectronic devices.However,its uncontrollable stability seriously affects its application in the field of photodetectors.In this paper,FAPb Br_(3)is combined with cadmium sulfide nanobelt(Cd S NB)to construct a hybrid device that greatly improves the stability and performance of the photodetector.The response of the FAPb Br_(3)NS/Cd S NB detector under 490 nm light illumination reaches 5712 A/W,while the response of the FAPb Br_(3)photodetector under equivalent conditions is only 25.45 A/W.The photocurrent of the FAPb Br_(3)NS/Cd S NB photodetector is nearly 80.25%of the initial device after exposure to air for 60 days.The difference in electric field distribution between the single material device and the composite device is simulated by the finite-difference time-domain method.It shows the advantages of composite devices in photoconductive gain and directly promotes the hybrid device performance.This paper presents a new possibility for high stability,fast response photodetectors.

关 键 词：organic-inorganic hybrid perovskite stability finite-difference time-domain PHOTODETECTOR 

分 类 号：TN36[电子电信—物理电子学]