Performance optimization of self-powered visible photodetectors based on Cu2O/electrolyte heterojunctions

doi:10.1088/1674-1056/abab7b

中国物理B ›› 2020, Vol. 29 ›› Issue (12): 128202-.doi: 10.1088/1674-1056/abab7b

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

收稿日期:2020-05-14 修回日期:2020-07-02 接受日期:2020-08-01 出版日期:2020-12-01 发布日期:2020-11-19

Performance optimization of self-powered visible photodetectors based on Cu₂O/electrolyte heterojunctions

Zhi-Ming Bai(白智明)†, Ying-Hua Zhang(张英华)‡, Zhi-An Huang(黄志安), Yu-Kun Gao(高玉坤), and Jia Liu(刘佳)

School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China

Received:2020-05-14 Revised:2020-07-02 Accepted:2020-08-01 Online:2020-12-01 Published:2020-11-19
Contact: ^†Corresponding author. E-mail: baizhiming2008@126.com ^‡Corresponding author. E-mail: zhangyinghuaustb@sina.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 51602021) and the Fundamental Research Funds for the Central Universities, China (Grant No. FRF-TP-18-023A2).

摘要/Abstract

Abstract: The performance of the self-powered photodetectors based on the Cu₂O/electrolyte heterojunctions is optimized by adjusting morphology and structure of the Cu₂O film. The Cu₂O film with a deposition time of 2000 s possesses a largest current density of 559.6 μ A/cm² under visible light illumination at zero bias, with a rising time of 5.2 ms and a recovering time of 9.0 ms. This optimized Cu₂O film has a highest responsivity of about 25.8 mA/W for visible light, and a negligible responsivity for UV light. The high crystallinity and excellent charge transfer property are responsible for the improved photodetection performance.

Key words: self-powered, visible, photodetector, Cu₂O, photoelectrochemical

中图分类号: (Photoelectrochemical cells, photoelectrochromic and other hybrid electrochemical energy storage devices)

82.47.Jk

85.60.Gz (Photodetectors (including infrared and CCD detectors)) 81.20.Ka (Chemical synthesis; combustion synthesis) 72.40.+w (Photoconduction and photovoltaic effects)

. [J]. 中国物理B, 2020, 29(12): 128202-.

Zhi-Ming Bai(白智明), Ying-Hua Zhang(张英华), Zhi-An Huang(黄志安), Yu-Kun Gao(高玉坤), and Jia Liu(刘佳). Performance optimization of self-powered visible photodetectors based on Cu₂O/electrolyte heterojunctions[J]. Chin. Phys. B, 2020, 29(12): 128202-.

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Performance optimization of self-powered visible photodetectors based on Cu₂O/electrolyte heterojunctions

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