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Polymers
Volume 17
Issue 10
10.3390/polym17101384
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Review

Self-Powered Ultraviolet Photodetectors Based on Conductive Polymers/Ga2O3 Heterojunctions: A Review

by
Zerui Xiao
1,
Haoyan Chen
1,
Honglong Ning
1,2,*,
Dongxiang Luo
3,
Xuecong Fang
1,
Muyun Li
1,
Guoping Su
1,
Han He
1,
Rihui Yao
1,* and
Junbiao Peng
1
1
State Key Laboratory of Luminescent Materials and Devices, Guangdong Basic Research Center of Excellence for Energy and Information Polymer Materials, South China University of Technology, Guangzhou 510640, China
2
The International School of Microelectronics, Dongguan University of Technology, Dongguan 523808, China
3
Huangpu Hydrogen Innovation Center/Guangzhou Key Laboratory for Clean Energy and Materials, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
*
Authors to whom correspondence should be addressed.
Polymers 2025, 17(10), 1384; https://doi.org/10.3390/polym17101384 (registering DOI)
Submission received: 15 April 2025 / Revised: 10 May 2025 / Accepted: 15 May 2025 / Published: 17 May 2025
(This article belongs to the Special Issue Advanced Electrically Conductive Polymers and Composites)
Versions Notes

Abstract

Self-powered ultraviolet photodetectors hold significant potential for diverse applications across both military and civilian fields. Owing to its wide bandgap, high electron mobility, and adaptability to various substrates, gallium oxide (Ga2O3) serves as a crucial material for fabricating self-powered ultraviolet photodetectors. Photodetectors based on p-n heterojunctions of conductive polymers and gallium oxide have great application potential benefiting from unique advantages of conductive polymers. This review provides an extensive overview of typical ultraviolet photodetectors based on conductive polymer/gallium oxide heterojunctions, focusing on the physical structure, fabrication process, and photoelectric properties of heterojunction devices formed by Ga2O3 with conductive polymers like polythiophene, polyaniline, and polycarbazole, etc. Different conductive polymers yield varying performance improvements in the fabricated devices: polythiophene/Ga2O3 devices exhibit high conductivity and flexible bandgap tuning to meet diverse wavelength detection needs; PANI/Ga2O3 devices feature simple fabrication and low cost, with doping control to enhance charge carrier transport efficiency; polycarbazole/Ga2O3 devices offer high thermal stability and efficient hole transport. Among them, the polythiophene/Ga2O3 device demonstrates the most superior overall performance, making it the ideal choice for high-performance Ga2O3-based photodetectors and a representative of such research. This review identifies the existing technical challenges and provides valuable insights for designing more efficient Ga2O3/conductive polymer heterojunction photodetectors.
Keywords: solar-blind UV photodetector; gallium oxide; conductive polymer; self-powered; polythiophene; polyaniline; wide bandgap solar-blind UV photodetector; gallium oxide; conductive polymer; self-powered; polythiophene; polyaniline; wide bandgap

Share and Cite

MDPI and ACS Style

Xiao, Z.; Chen, H.; Ning, H.; Luo, D.; Fang, X.; Li, M.; Su, G.; He, H.; Yao, R.; Peng, J. Self-Powered Ultraviolet Photodetectors Based on Conductive Polymers/Ga2O3 Heterojunctions: A Review. Polymers 2025, 17, 1384. https://doi.org/10.3390/polym17101384

AMA Style

Xiao Z, Chen H, Ning H, Luo D, Fang X, Li M, Su G, He H, Yao R, Peng J. Self-Powered Ultraviolet Photodetectors Based on Conductive Polymers/Ga2O3 Heterojunctions: A Review. Polymers. 2025; 17(10):1384. https://doi.org/10.3390/polym17101384

Chicago/Turabian Style

Xiao, Zerui, Haoyan Chen, Honglong Ning, Dongxiang Luo, Xuecong Fang, Muyun Li, Guoping Su, Han He, Rihui Yao, and Junbiao Peng. 2025. "Self-Powered Ultraviolet Photodetectors Based on Conductive Polymers/Ga2O3 Heterojunctions: A Review" Polymers 17, no. 10: 1384. https://doi.org/10.3390/polym17101384

APA Style

Xiao, Z., Chen, H., Ning, H., Luo, D., Fang, X., Li, M., Su, G., He, H., Yao, R., & Peng, J. (2025). Self-Powered Ultraviolet Photodetectors Based on Conductive Polymers/Ga2O3 Heterojunctions: A Review. Polymers, 17(10), 1384. https://doi.org/10.3390/polym17101384

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