Self-powered photodetector with high performance based on PtSe2/MoSe2 Van der Waals heterojunction

Chaoyi Zhang; Silu Peng; Jiayue Han; Chunyu Li; Hongxi Zhou; Yadong Jiang; Jun Wang

doi:10.1117/12.3007206

18 December 2023 Self-powered photodetector with high performance based on PtSe₂/MoSe₂ van der Waals heterojunction

Chaoyi Zhang, Silu Peng, Jiayue Han, Chunyu Li, Hongxi Zhou, Yadong Jiang, Jun Wang

Proceedings Volume 12963, AOPC 2023: Optical Sensing, Imaging, and Display Technology and Applications; and Biomedical Optics; 129630P (2023) https://doi.org/10.1117/12.3007206
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China

Abstract

Due to the increasing demand for miniaturization and portability, the development of self-powered photodetectors that can work without external power supply has aroused great interest among researchers. As a group-10 layered transitional metal dichalcogenides, PtSe2 exhibits potential applications in photoelectric detection because of the unique properties such as high carrier mobility, tunable bandgap, and stability. However, its inherent large dark current hinders the further improvement of the performance of the PtSe₂ photodetectors. In this paper, we fabricated a vertically aligned Two-dimensional (2D) van der Waals (vdWs) heterojunction composed of PtSe₂ and MoSe₂, which exhibits high sensitivity photoelectric detection performance in a wide band from visible light (405 nm) to near-infrared (1550 nm) without external bias. As a result, working in self-driving mode at room temperature, the responsivity and detectivity can reach 22.95 A W^-1 and 9.27×10¹¹ Jones with a fast response speed of 180/48 μs. This work is expected to provide a new idea for broadband, energy-efficient and high-performance miniaturized detectors.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Chaoyi Zhang, Silu Peng, Jiayue Han, Chunyu Li, Hongxi Zhou, Yadong Jiang, and Jun Wang "Self-powered photodetector with high performance based on PtSe₂/MoSe₂ van der Waals heterojunction", Proc. SPIE 12963, AOPC 2023: Optical Sensing, Imaging, and Display Technology and Applications; and Biomedical Optics, 129630P (18 December 2023); https://doi.org/10.1117/12.3007206

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