摘要
Omnidirectional photodetectors attract enormous attention due to their prominent roles in optical tracking systems and omnidirectional cameras.However,it is still a challenge for the construction of high-performance omnidirectional photodetectors where the incident light can be effectively absorbed in multiple directions and the photo-generated carriers can be effectively collected.Here,a high-performance omnidirectional self-powered photodetector based on the CsSnBr_(3)/indium tin oxide(ITO)heterostructure film was designed and demonstrated.The as-fabricated photodetector exhibited an excellent self-powered photodetection performance,showing responsivity and detectivity up to 35.1 mA/W and 1.82×10^(10) Jones,respectively,along with the smart rise/decay response time of 4 ms/9 ms.Benefitting from the excellent photoelectric properties of the CsSnBr_(3) film as well as the ability of the CsSnBr_(3)/ITO heterostructure to efficiently separate and collect photo-generated carriers,the as-fabricated photodetector also exhibited an excellent omnidirectional self-powered photodetection performance.All the results have certified that this work finds an efficient way to realize high-performance omnidirectional self-powered photodetectors.
基金
supported by the National Key R&D Program of China under Grant No.2017YFA0305500
National Natural Science Foundation of China under Grant No.61904096,Taishan Scholars Program of Shandong Province under Grant No.tsqn201812006
Natural Science Foundation of Shandong Province under Grants No.ZR2022JQ05 and No.ZR2022QF025
Shandong University Multidisciplinary Research and Innovation Team of Young Scholars under Grant No.2020QNQT015
“Outstanding Youth Scholar and Qilu Young Scholar”Programs of Shandong University.
