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人工晶体学报 ›› 2026, Vol. 55 ›› Issue (4): 487-545.DOI: 10.16553/j.cnki.issn1000-985x.2025.0214

• 综合评述 •    下一篇

氧化镓薄膜外延生长、掺杂调控与缺陷控制研究进展

陈一宏1,2(), 周晓庆1, 徐文静1,2, 于悦1, 赵意茹3, 杨珍妮2, 董鑫4, 贾志泰5, 陈端阳6,7(), 齐红基2,6,7(), 张洪良1,3()   

  1. 1.厦门大学化学化工学院,表界面化学全国重点实验室,厦门 361005
    2.杭州光学精密机械研究所,杭州 311421
    3.厦门大学物理科学与技术学院,厦门 361005
    4.吉林大学电子科学与工程学院,集成光电子学全国重点实验室,长春 130012
    5.山东大学晶体材料全国重点实验室,济南 250100
    6.中国科学院上海光学精密机械研究所先进激光与光电功能材料部,上海 201800
    7.上海市宽禁带与超宽禁带半导体材料重点实验室,上海 201306
  • 收稿日期:2025-10-07 出版日期:2026-04-20 发布日期:2026-05-19
  • 通信作者: 陈端阳,博士,高级工程师。E-mail:chenduanyang@siom.ac.cn
    齐红基,博士,研究员。E-mail:qhj@siom.ac.cn
    张洪良,博士,厦门大学特聘教授。E-mail:kelvinzhang@xmu.edu.cn
  • 作者简介:陈一宏(1999—),男,福建省人,博士研究生。E-mail:20520240156903@stu.xmu.edu.cn
  • 基金资助:
    国家重点研发计划(2022YFB3605501);国家自然科学基金(22275154)

Research Progress in Epitaxial Growth, Doping Control, and Defect Management of Gallium Oxide Thin Films

CHEN Yihong1,2(), ZHOU Xiaoqing1, XU Wenjing1,2, YU Yue1, ZHAO Yiru3, YANG Zhenni2, DONG Xin4, JIA Zhitai5, CHEN Duanyang6,7(), QI Hongji2,6,7(), ZHANG Hongliang1,3()   

  1. 1.State Key Laboratory of Physical Chemistry of Solid Surfaces,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China
    2.Hangzhou Institute of Optics and Fine Mechanics,Hangzhou 311421,China
    3.College of Physical Science and Technology,Xiamen University,Xiamen 361005,China
    4.State Key Laboratory on Integrated Optoelectronics,College of Electronic Science & Engineering,Jilin University,Changchun 130012,China
    5.State Key Laboratory of Crystal Materials,Shandong University,Jinan 250100,China
    6.Advanced Laser and Optoelectronic Functional Materials Department,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China
    7.Shanghai Key Laboratory of Wide and Ultra-Wide Bandgap Semiconductor Materials,Shanghai 201306,China
  • Received:2025-10-07 Online:2026-04-20 Published:2026-05-19

摘要: 氧化镓作为典型的超宽禁带半导体材料,在高功率电子器件领域展现出重要应用前景,而外延薄膜中的掺杂调控与缺陷控制是制约其器件性能提升的关键科学与技术问题。本文聚焦β相氧化镓外延薄膜,对不同外延方式的基本原理及技术特点进行了系统性综述,并围绕不同外延生长技术中背景载流子抑制、n型掺杂精确控制、厚膜生长与缺陷演化机制等核心问题,系统总结和评述了近几年的代表性研究进展。同时从物理机理角度分析了氧化镓p型掺杂长期受限的内在原因,并归纳了不同晶型氧化镓异质外延的最新探索。最后,结合现有技术瓶颈,对氧化镓大尺寸生长、厚膜外延及缺陷控制的发展方向进行了展望。

关键词: 氧化镓; 外延生长; 掺杂调控; 厚膜生长; 缺陷控制; p型掺杂; 异质外延

Abstract: Gallium oxide has emerged as a prominent ultrawide bandgap semiconductor material. Its outstanding physical properties, including a bandgap of approximately 4.9 eV and a breakdown electric field strength of 8 MV/cm, combined with the unique capability of producing large-size single crystal substrates via melt growth methods, have positioned it at the forefront of research on the high-power electronic devices, radio-frequency front-end devices, and solar-blind ultraviolet photodetection. In recent years, substantial advances has been made in substrate preparation, epitaxial growth, and device processing. Epitaxial films serve as a critical bridge between substrates and devices, whose quality directly determines the performance limits of the final devices. Doping control and defect management during epitaxial growth are considered a core challenge in the field. This review provides a systematic overview of the research status and development trends of β-Ga2O3 epitaxial films. It begins by introducing the research background, crystal structure, and fundamental physical properties of gallium oxide. This review then provides a detailed assessment of progress in major epitaxial growth techniques, including hydride vapor phase epitaxy, metalorganic chemical vapor deposition, and molecular beam epitaxy, with emphasis on key strategies such as the suppression of background carrier concentration, precise control of n-type doping, high-rate growth of thick films, and inhibition of defects. The significant challenge of achieving p-type doping is analyzed, and its physical mechanisms along with the latest research developments are summarized. Furthermore, recent achievements in the heteroepitaxy of β-Ga2O3α-Ga2O3 and ε-Ga2O3 are summarized. Finally, based on current technical bottlenecks and future application requirements, prospects for the development of gallium oxide epitaxial technology are presented, with the aim of providing a useful reference for both fundamental research and industrial applications in this field.

Key words: gallium oxide; epitaxial growth; doping control; growth of thick film; defect management; p-type doping; heteroepitaxy

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