Enhanced optoelectronic characteristics of MoS_(2)-based photodetectors through hybridization with CdS_(0.42)Se_(0.58)nanobelt  

作　　者：Aimin Liu Jiyu Zhao Qiuhong Tan Peizhi Yang Yingkai Liu Qianjin Wang 

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

出　　处：《Journal of Advanced Dielectrics》2023年第6期20-28,共9页先进电介质学报（英文）

基　　金：supported by the National Natural Science Foundation of China(Nos.11864046 and 11764046);the Basic Research Program of Yunnan Province(Nos.202001AT070064 and 202101AT070124);Spring City Plan:the High-level Talent Promotion and Training Project of Kunming(2022SCP005).

摘　　要：Monolayer molybdenum disulfide(MoS_(2))has weak light absorption due to its atomically-thin thickness,thus hindering the development of MoS_(2)-based optoelectronic devices.CdS_(x)Se_(1-x)has excellent photoelectric performance in the visible light range,and its nanostructure shows great potential in new nanoscale electronic and optoelectronic devices.In this work,a composite photodetector device with the combination of monolayer MoS_(2)nanosheets and CdS_(0.42)Se_(0.58)nanobelts has been successfully prepared,which can not only maintain the inherent excellent properties of the two blocks,but also play a synergistic role between them,thus improving the photoelectric performance of the device.The monolayer MoS_(2)nanosheet/CdS_(0.42)Se_(0.58)nanobelt photodetector has a wide spectral response range(400–800 nm),high responsivity(527.22 A/W)and large external quantum efficiency(EQE)(1.06×10^(5)%).Compared with the isolated monolayer MoS_(2)nanosheet,both the responsivity and EQE of the hybrid photodetector are increased by 117.4 times under 620 nm illumination.This study provides a way to prepare hybrid photodetectors with wide spectral response and high responsivity.

关 键 词：Monolayer MoS_(2) CdS_(0.42)Se_(0.58)nanobelt PHOTODETECTORS 

分 类 号：O61[理学—无机化学]