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人工晶体学报 ›› 2025, Vol. 54 ›› Issue (8): 1426-1432.DOI: 10.16553/j.cnki.issn1000-985x.2025.0011

• 研究论文 • 上一篇    下一篇

共掺杂β-Ga2O3导电性质第一性原理研究

王淳1,2(), 王坤1,2(), 宋相满1, 任林1,2, 张浩1   

  1. 1.东北大学,工业智能与系统优化国家级前沿科学中心,沈阳 110819
    2.东北大学冶金学院,沈阳 110819
  • 收稿日期:2025-01-14 出版日期:2025-08-20 发布日期:2025-09-01
  • 通信作者: 王 坤,博士,副教授。E-mail:wangkun@mail.neu.edu.cn
  • 作者简介:王 淳(2001—),女,辽宁省人,硕士研究生。E-mail:wangc0222@163.com
  • 基金资助:
    国家自然科学基金(52276102)

First-Principles Study on the Electrical Properties of Co-Doped β-Ga2O3

WANG Chun1,2(), WANG Kun1,2(), SONG Xiangman1, REN Lin1,2, ZHANG Hao1   

  1. 1.National Frontiers Science Center for Industrial Intelligence and Systems Optimization,Northeastern University,Shenyang 110819,China
    2.School of Metallurgy,Northeastern University,Shenyang 110819,China
  • Received:2025-01-14 Online:2025-08-20 Published:2025-09-01

摘要: 本文基于密度泛函理论的第一性原理计算方法,研究了Mg-Al共掺杂、F-Zn共掺杂和N-Mg共掺杂β-Ga2O3三种体系的结构性质和电学性质,以期获得高性能共掺杂P型导电β-Ga2O3材料。结果表明,Mg-Al共掺杂和F-Zn共掺杂β-Ga2O3仍为直接带隙半导体材料,而N-Mg共掺杂β-Ga2O3为间接带隙半导体材料。三种共掺杂体系均具有较低的形成能。其中Mg-Al共掺杂β-Ga2O3体系形成能最低,表现出较好的热力学稳定性。该体系中,Mg-p和Al-p轨道推移价带顶向高能方向移动,并穿越费米能级,是三种掺杂体系中最有可能实现P型导电性质的材料。

关键词: 共掺杂β-Ga2O3; 第一性原理; P型导电; 电子结构; 密度泛函理论; 半导体

Abstract: In this study, the structural and electronic properties of three β-Ga2O3 systems, Mg-Al co-doped, F-Zn co-doped and N-Mg co-doped were investigated by first-principles calculations based on density functional theory, with the aim of obtaining high-performance P-type conductive β-Ga2O3 materials. The results indicate that the Mg-Al co-doped and F-Zn co-doped β-Ga2O3 remain direct bandgap semiconductors, while the N-Mg co-doped system becomes an indirect bandgap semiconductor. These systems exhibit relatively low formation energies. Among them, the Mg-Al co-doped β-Ga2O3 system exhibits the lowest formation energy, indicating better thermodynamic stability. In this system, the Mg-p and Al-p orbitals shift the valence band toward higher energy, crossing the Fermi level, making it the most promising candidate for P-type conductivity among the three systems.

Key words: co-doped β-Ga2O3; first-principle; P-type conductivity; electronic structure; density functional theory; semiconductor

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