Cailiao gongcheng (Oct 2023)

Research progress in solar-blind UV detectors based on wide-band semiconductor Ga2O3

  • SHEN Leyun,
  • ZHANG Tao,
  • LIU Yunze,
  • WU Huishan,
  • WANG Fengzhi,
  • PAN Xinhua,
  • YE Zhizhen

DOI
https://doi.org/10.11868/j.issn.1001-4381.2021.001100
Journal volume & issue
Vol. 51, no. 10
pp. 13 – 26

Abstract

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Ga2O3 is an ultra-wide band semiconductor corresponding to the deep ultraviolet(UV) spectrum, which can be used to prepare solar-blind UV detectors. The solar-blind ultraviolet detectors are widely used in military and aerospace fields dueto strong anti-interference ability, high detection sensitivity and low background noise.The basic properties of Ga2O3 materials, including different crystal structures and their preparation, and the recent progress in solar-blind UV detectors based on Ga2O3 were introduced in this paper. Among them, metal-semiconductor-metal (MSM) structure of Ga2O3 devices are the most common, which are expected to achieve business application with commercial parameters. The Ga2O3-based heterostructure and Schottky detectors also exhibit excellent performance and self-supply characteristics. In addition, Ga2O3 devices based on thin film transistor become a potential solar-blind ultraviolet detector. They combine the working mechanism of MSM and transistor structure to obtain high light gain, which are suitable for weak signal detection.

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