Volume 18, Issue 7 2200512
Research Article

Solar-Blind Deep-Ultraviolet Photoconductive Detector Based on Amorphous Ga2O3 Thin Films for Corona Discharge Detection

Xudong Li

Xudong Li

Chongqing Key Laboratory of Photo-Electric Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing, 401331 P. R. China

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Fengyun Xu

Fengyun Xu

Chongqing Key Laboratory of Photo-Electric Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing, 401331 P. R. China

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Xuan Wang

Xuan Wang

Chongqing Key Laboratory of Photo-Electric Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing, 401331 P. R. China

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Jiangshuai Luo

Jiangshuai Luo

Chongqing Key Laboratory of Photo-Electric Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing, 401331 P. R. China

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Ke Ding

Ke Ding

Chongqing Key Laboratory of Photo-Electric Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing, 401331 P. R. China

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Liyu Ye

Liyu Ye

Chongqing Key Laboratory of Photo-Electric Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing, 401331 P. R. China

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Honglin Li

Honglin Li

Chongqing Key Laboratory of Photo-Electric Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing, 401331 P. R. China

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Yuanqiang Xiong

Yuanqiang Xiong

Chongqing Key Laboratory of Photo-Electric Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing, 401331 P. R. China

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Peng Yu

Peng Yu

Chongqing Key Laboratory of Photo-Electric Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing, 401331 P. R. China

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Chunyang Kong

Chunyang Kong

Chongqing Key Laboratory of Photo-Electric Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing, 401331 P. R. China

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Lijuan Ye

Corresponding Author

Lijuan Ye

Chongqing Key Laboratory of Photo-Electric Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing, 401331 P. R. China

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Hong Zhang

Corresponding Author

Hong Zhang

Chongqing Key Laboratory of Photo-Electric Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing, 401331 P. R. China

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Wanjun Li

Corresponding Author

Wanjun Li

Chongqing Key Laboratory of Photo-Electric Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing, 401331 P. R. China

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First published: 09 February 2023
Citations: 7

Abstract

A low-cost, high-efficiency corona discharge detection method is important in ensuring the safety of high-voltage transmission systems. High-sensitivity solar-blind deep-ultraviolet (SBDU) photodetectors (PD) have obvious advantages in corona discharge detection. Herein, a fully transparent SBDU photoconductive detector with indium tin oxide (ITO) transparent electrodes is successfully constructed based on amorphous Ga2O3 (a-Ga2O3) thin films. The device demonstrates an ultra-high responsivity of 1.3 × 104 A W−1, a detectivity of 3.2 × 1014 Jones, and an external quantum efficiency of 6.7 × 106%. In addition, the capability of the ultra-sensitive fully transparent photoconductive detector is investigated in terms of corona discharge detection. It is established that the device detection distance limit for simulated corona discharge detection is up to 70 cm, that is, the device can effectively detect extremely weak solar-blind deep-ultraviolet signals below 204 pW cm−2. A proof-of-concept for the future application of easily-integrated fully transparent amorphous Ga2O3 photoconductive detectors with low manufacturing costs in high-voltage corona discharge detection is provided.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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