Paper
6 August 2023 Study on persistent photoconductivity in amorphous Ga2O3 photodetectors
Haixin Zhang, Dayong Jiang, Man Zhao, Jichao Han, Mingyang Li, Yue Zhao, Haoda Li, Yanyan Peng
Author Affiliations +
Proceedings Volume 12781, International Conference on Optoelectronic Information and Functional Materials (OIFM 2023); 127810M (2023) https://doi.org/10.1117/12.2687010
Event: 2023 International Conference on Optoelectronic Information and Functional Materials (OIFM 2023), 2023, Guangzhou, JS, China
Abstract
Ga2O3 is one of the hot materials used in the preparation of solar blind ultraviolet detectors in recent years because of its wide band gap of 4.8 eV, high optical absorption coefficient, good thermal and chemical stability, strong anti-irradiation ability and low cost. Among them, amorphous Ga2O3 materials not only have the same photoelectric characteristics as single crystalline Ga2O3 materials, but also have the unique advantages of easy growth, easy preparation and low substrate requirements. The introduction of oxygen vacancy in Ga2O3 can produce intermediate energy level in its forbidden band, so that Ga2O3 has the ability of wide band detection from ultraviolet to visible. However, in photoconductive Ga2O3 photodetectors, there exists a contradictory relationship between responsiveness and response recovery speed, which is mainly attributed to the fact that photoconductive gain and sustained photoconductivity related to defects increase responsiveness and response recovery time, respectively. In addition, the mechanism of photoconductance gain and sustained photoconductance formation needs further clarification. In this paper, amorphous Ga2O3 photodetectors with good performance were prepared and the mechanism of continuous photoconductance in Ga2O3 photodetectors was investigated.
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Haixin Zhang, Dayong Jiang, Man Zhao, Jichao Han, Mingyang Li, Yue Zhao, Haoda Li, and Yanyan Peng "Study on persistent photoconductivity in amorphous Ga2O3 photodetectors", Proc. SPIE 12781, International Conference on Optoelectronic Information and Functional Materials (OIFM 2023), 127810M (6 August 2023); https://doi.org/10.1117/12.2687010
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Gallium

Photodetectors

Electrons

Ultraviolet radiation

Oxygen

Semiconductors

Spectral response

Back to Top