Affiliation:
1. Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou Fujian 350108 P. R. China
2. CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. China
Abstract
AbstractThe development of a self‐powered photodetector capable of functioning without an external power source has generated significant interest among researchers due to the growing demand for miniaturization and portability. In this study, a p‐Te/n‐WSe2 van der Waals heterojunction with a distinct rectification ratio exceeding 104, an ultralow reverse current of 10−11 A, and a light on/off ratio of up to 5657 under 405 nm light illumination is fabricated. Additionally, the Te/WSe2 heterojunction displayed a fast response speed of 18 µs and a broadband detection capability from 405 to 1550 nm. Furthermore, the Te/WSe2 heterojunction demonstrated a competitive self‐powered photodetector, exhibiting a light on/off ratio above 5 × 104, a photovoltaic responsivity of 196 mA W−1, and a photovoltaic detectivity of 7.5 × 1011 Jones. This study highlights the promising potential of Te/WSe2 vdWH for ultrasensitive self‐powered photodetection applications.
Funder
National Natural Science Foundation of China
Subject
Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Cited by
2 articles.
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