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人工晶体学报 ›› 2025, Vol. 54 ›› Issue (8): 1352-1368.DOI: 10.16553/j.cnki.issn1000-985x.2025.0061

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β-Ga2O3纳米带场效应晶体管及日盲紫外光电探测器研究进展

李晓旭1(), 石蔡语1, 沈磊1, 曾光1, 李晓茜1, 陈宇畅1, 卢红亮1,2()   

  1. 1.复旦大学微电子学院,上海 200433
    2.国家集成电路创新中心,上海 201203
  • 收稿日期:2025-03-26 出版日期:2025-08-20 发布日期:2025-09-01
  • 通信作者: 卢红亮,博士,教授。E-mail:honglianglu@fudan.edu.cn
  • 作者简介:李晓旭(2002—),男,河北省人,博士研究生。E-mail:24112020018@m.fudan.edu.cn
  • 基金资助:
    国家自然科学基金(62027818);国家自然科学基金(11974320);上海市科技创新行动计划(23500790600)

Research Progress on β-Ga2O3 Nanobelt Field-Effect Transistors and Solar-Blind Ultraviolet Photodetectors

LI Xiaoxu1(), SHI Caiyu1, SHEN Lei1, ZENG Guang1, LI Xiaoxi1, CHEN Yuchang1, LU Hongliang1,2()   

  1. 1.School of Microelectronics,Fudan University,Shanghai 200433,China
    2.National Integrated Circuit Innovation Center,Shanghai 201203,China
  • Received:2025-03-26 Online:2025-08-20 Published:2025-09-01

摘要: β相氧化镓(β-Ga2O3)由于具有直接和超宽带隙(~4.9 eV)、高击穿电场(~9 MV/cm),以及优异的热稳定性和化学稳定性等优点,广泛应用于高温、高压、高频及日盲紫外光电探测器等领域。从β-Ga2O3单晶块体上机械剥离出β-Ga2O3纳米带作为沟道来探究新型β-Ga2O3器件结构不仅具有很大的灵活性,也将极大地降低成本。近年来,虽然β-Ga2O3纳米带场效应晶体管及日盲紫外光电探测器的研究已取得了很大进展,但器件的综合性能依然受限而不能满足商业化的需求,尤其是迁移率较低且响应度低。本文首先介绍了β-Ga2O3材料的基本性质;接着对β-Ga2O3纳米带场效应晶体管及日盲紫外光电探测器的研究现状进行总结与分析;最后指出β-Ga2O3基器件面对的困难与挑战,例如界面优化问题、器件可靠性系统研究缺乏等。

关键词: β-Ga2O3; 纳米带; 场效应晶体管; 日盲紫外光电探测器; 光电性能

Abstract: β-phase gallium oxide (β-Ga2O3) has widespread applications in various fields such as high-temperature, high-pressure, high-frequency devices, as well as solar-blind ultraviolet photodetectors due to its direct and ultrawide bandgap (~4.9 eV), high breakdown electric field (~9 MV/cm), and excellent thermal and chemical stability. The β-Ga2O3 nanobelts mechanically exfoliated from β-Ga2O3 single crystals serve as channels for exploring new device structures, offering significant flexibility and potentially reducing costs. In recent years, substantial progress has been made in the research of β-Ga2O3 nanobelt field effect transistors and solar-blind ultraviolet photodetectors. However, the overall device performance remains limited and unable to meet commercialization demands, particularly in terms of low mobility and low responsivity. In this work, the basic properties of β-Ga2O3 materials are introduced. Then, the current research status of β-Ga2O3 nanobelt field effect transistors and solar-blind ultraviolet photodetectors is summarized and analyzed. Finally, challenges and difficulties faced by β-Ga2O3-based devices are highlighted, including issues related to interface optimization and the lack of systematic studies on device reliability.

Key words: β-Ga2O3; nanobelt; field effect transistor; solar-blind ultraviolet photodetector; optoelectronic performance

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