First-principles Study on Magnetic and Optical Properties of Two-dimensional ZnS Doped with Nonmetal Elements
ZHAO Yupeng1, HE Yong1, ZHANG Min1, SHI Junjie2
1 College of Physics and Electron Information, Inner Mongolia Normal University, Hohhot 010022, China 2 School of Physics, Peking University, Beijing 100871, China
Abstract: The effect of substitution doping of non-metallic elements (B-F, Si-Cl, As-Br and I) on the energy band, density of states and optical properties of two-dimensional ZnS were studied by using the first-principles calculation of spin polarization density functional theory. The results show that C, N, P and As atom doping can induce magnetism, which mainly comes from the spin magnetic moment of the uncanceled electrons in the outermost layer of the doping atom. Further study on the magnetic coupling of two non-metallic atom doped single layer ZnS shows that the C2 configuration is the most stable. The systems doped with C or N exhibit paramagnetism, while As or P doped systems present antiferromagnetism. The doping of non-metallic elements C, N, P and As also affects the optical properties of two-dimensional ZnS. The blue shift of the optical absorption peak occurs in the high-energy region, and new absorption peaks were generated in the low-energy region, which enhances the absorptive capacity of two-dimensional ZnS in the infrared region.
赵宇鹏, 贺勇, 张敏, 史俊杰. 非金属掺杂二维ZnS的磁性和光学性质的第一性原理研究[J]. 材料导报, 2020, 34(10): 10013-10017.
ZHAO Yupeng, HE Yong, ZHANG Min, SHI Junjie. First-principles Study on Magnetic and Optical Properties of Two-dimensional ZnS Doped with Nonmetal Elements. Materials Reports, 2020, 34(10): 10013-10017.
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