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- Title
An Ultrahigh Responsivity (9.7 mA W<sup>−1</sup>) Self-Powered Solar-Blind Photodetector Based on Individual ZnO-Ga<sub>2</sub>O<sub>3</sub> Heterostructures.
- Authors
Zhao, Bin; Wang, Fei; Chen, Hongyu; Zheng, Lingxia; Su, Longxing; Zhao, Dongxu; Fang, Xiaosheng
- Abstract
Highly crystallized ZnO-Ga2O3 core-shell heterostructure microwire is synthesized by a simple one-step chemical vapor deposition method, and constructed into a self-powered solar-blind (200-280 nm) photodetector with a sharp cutoff wavelength at 266 nm. The device shows an ultrahigh responsivity (9.7 mA W−1) at 251 nm with a high UV/visible rejection ratio ( R251 nm/ R400 nm) of 6.9 × 102 under zero bias. The self-powered device has a fast response speed with rise time shorter than 100 µs and decay time of 900 µs, respectively. The ultrahigh responsivity, high UV/visible rejection ratio, and fast response speed make it highly suitable in practical self-powered solar-blind detection. Additinoally, this microstructure heterojunction design method would provide a new approach to realize the high-performance self-powered photodetectors.
- Subjects
HETEROSTRUCTURES; SUPERLATTICES; PHOTOELECTRIC devices; PHOTODETECTORS; PIN photodiodes
- Publication
Advanced Functional Materials, 2017, Vol 27, Issue 17, pn/a
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.201700264