First-Principles Study of the ZnO(1120) Structure and Ti Adsorption

Abstract:

Based on the density functional theory, this paper calculated the geometrical and electronic structural properties of ZnO(11¯20) surfaces and analyzed ZnO(11¯20) surfaces in the structural relaxation, electron density difference, densities of states and the Ti adsorption by using the first-principles and pseudopotential method. According to the computing result, ZnO(11¯20) surfaces are similar in geometrical structure and bulk; at the same time, when Ti adsorbs ZnO(11¯20) surfaces, the negative charge density is special high in the central region between Ti and O, and Ti-O shows obviously better performance than Zn-O in covalent bond, for the reason that the number of outer electron transferred from Ti to O is extremely limited, and the area of negative charge of the surface is large, which can lead to metallic characteristics on the surface

• Periodical: Advanced Materials Research (Volume 833)
• Pages: 70-74
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.833.70
• Online since: November 2013
• Authors: Zhong Liang, Guo You Gan*, Jian Hong Yi, Ji Kang Yan, Jing Hong Du, Jia Min Zhang, Yi Chun Liu
• Keywords: Density Functional Theory (DFT), First-Principle, Ti Adsorption, ZnO(1120) Surfaces

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