Regulation of the electronic properties of GaN(0001) surface by metal atoms

被引：0
|
作者：
Li, Jiabin [1 ]
Liu, Hongxia [1 ]
Wu, Lei [1 ]
机构：
[1] Xidian Univ, Sch Microelect, Key Lab Wide Band Gap Semicond Mat & Devices Educ, Xian 710071, Shaanxi, Peoples R China
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2018年 / 57卷 / 02期
基金：
中国国家自然科学基金;
关键词：
FIELD-EMISSION PROPERTIES; OPTICAL-PROPERTIES; 1ST PRINCIPLES; CS ADSORPTION; GAN NANOWIRES; DOPED GAN; LAYER;
D O I：
10.7567/JJAP.57.025701
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
On the basis of first-principles calculation, we investigate the control of the electronic properties of the GaN(0001) surface by metal atoms. The results show that all the metal-atom-adsorbed GaN(0001) surfaces are direct-band-gap semiconductors, and their band gaps could be reduced considerably. The results of the density of states indicate that the orbital hybridization of the electronic states near the Fermi level took place between adatoms and the GaN(0001) surface, and electrons were mainly transferred from the adatoms to the GaN. Furthermore, the work function of the GaN(0001) surface becomes smaller with the adsorption of metal atoms, while the effect of metallic activity becomes more pronounced. (C) 2018 The Japan Society of Applied Physics
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页数：5
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