Photodetector based on Ruddlesden-Popper perovskite microwires with broader band detection  

作　　者：Yongxu Yan Zhexin Li Zheng Lou 

机构地区：[1]State Key Laboratory for Superlattices and Microstructures,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083,China [2]Center of Materials Science and Optoelectronic Engineering,University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Journal of Semiconductors》2023年第8期41-47,共7页半导体学报（英文版）

基　　金：This work was supported by the National Science Foundation of China(NSFC),(Grant No.62022079);the Youth Innovation Promotion Association of Chinese Academy of Sciences(Grant No.2020115).

摘　　要：Recently,the two-dimensional(2D)form of Ruddlesden-Popper perovskite(RPP)has been widely studied.However,the synthesis of one-dimensional(1D)RPP is rarely reported.Here,we fabricated a photodetector based on RPP microwires(RPP-MWs)and compared it with a 2D-RPP photodetector.The results show that the RPP-MWs photodetector possesses a wider photoresponse range and higher responsivities of 233 A/W in the visible band and 30 A/W in the near-infrared(NIR)band.The analyses show that the synthesized RPP-MWs have a multi-layer,heterogeneous core-shell structure.This structure gives RPP-MWs a unique band structure,as well as abundant trap states and defect levels,which enable them to acquire better photoresponse performance.This configuration of RPP-MWs provides a new idea for the design and application of novel heterostructures.

关 键 词：Ruddlesden-Popper perovskite MICROWIRES PHOTODETECTOR CORE-SHELL HETEROJUNCTION 

分 类 号：TN36[电子电信—物理电子学]