Effect of transition metals doping on electronic structure and optical properties of β-Ga2O3

被引：47
作者：
Gao, Shanshan [1 ]
Li, Weixue [1 ,2 ]
Dai, Jianfeng [1 ,2 ]
Wang, Qing [1 ,2 ]
Suo, Zhongqiang [1 ]
机构：
[1] Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Peoples R China
[2] Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
来源：
MATERIALS RESEARCH EXPRESS | 2021年 / 8卷 / 02期
关键词：
first-principles calculation; electronic structure; optical properties; Ga2O3; effective mass; DOPED BETA-GA2O3; ELECTRICAL-PROPERTIES; EMISSION; CRYSTAL;
D O I：
10.1088/2053-1591/abde10
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of transition metal (Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn) doping on the stability, electronic structure and optical properties of beta-Ga2O3 have been studied using GGA and GGA + U. The results show that the U value can correct the strong interaction of the d-layer, causing orbital hybridization and affecting the position and number of impurity energy levels. It can move the conduction band to higher energy levels and weaken the role of Ga-3p in the valence band. The Ti-doped beta-Ga2O3 is easily formed, followed by V, Cr, Sc, Fe, Mn, Co, Ni, Cu, and Zn doping. Some bands change regularly with the increase of atomic number. All systems become degraded semiconductors after doping. All doping will make the beta-Ga2O3 red shift. Among them, the absorption intensity of Cu doping in the visible light range is significantly improved.
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页数：8
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