Self-Driven Broadband Photodetectors Based on MoSe2/FePS3 van der Waals n–p Type-II Heterostructures

• DOI: 10.1021/acsami.1c24308
• Publication Date: 2022-02-22T16:14:53Z
• Authors: Juanmei Duan; Phanish Chava; Mahdi Ghorbani-Asl; YangFan Lu; Denise Erb; Liang Hu; Ahmad Echresh; Lars Rebohle; Artur Erbe; Arkady V. Krashen...; Manfred Helm; Yu-Jia Zeng; Shengqiang Zhou; Slawomir Prucnal
• Keywords: Quantum Efficiency

Two-dimensional (2D) van der Waals materials with broadband optical absorption are promising candidates for next-generation UV-vis-NIR photodetectors. FePS3, one of the emerging antiferromagnetic a wide bandgap and p-type conductivity, has been reported as an excellent candidate UV optoelectronics. However, high sensitivity photodetector self-driven mode based on FePS3 not yet realized. Here, we report high-performance self-powered multilayer MoSe2/FePS3 type-II n-p heterojunction working range from 350 to 900 nm. The presented operates at zero bias room temperature under ambient conditions. It exhibits maximum responsivity (Rmax) 52 mA W-1 external quantum efficiency (EQEmax) 12% 522 nm, which better than characteristics its individual constituents many other photodetectors made 2D heterostructures. performance is attributed built-in electric field in junction. Our approach provides platform applications.