2 September 2014 Cooperative chemisorption of K and O elements on cleaved GaAs(110) surface
Author Affiliations +
Proceedings Volume 9284, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronics Materials and Devices for Sensing and Imaging; 92841G (2014) https://doi.org/10.1117/12.2069815
Event: 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2014), 2014, Harbin, China
Abstract
Using the projected augmented wave potential by the density functional theory based upon gradual gradient approach method and the slab model, from the calculated surface, we identify the relaxed atoms sites of GaAs(110) surface, the electronic structure of elements K and O adsorpted on binding sites of ideal GaAs(110) surface have also been calculated, especially the total energy of the adsorption system. The comparison results of calculated total energy showed: for K and O elements at highest coverage of Θ=1ML on GaAs(110) surface, they were not formed to local domain of competitive chemical adsorption, while they were formed to a compound uniformity phase of cooperative chemical adsorption. Our calculated results providing theoretical basis and reference for the application of alkali oxidation adsorpted on GaAs surface to form a negative electron affinity photocathode.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Bin Ren, Bin Ren, Zhuang Miao, Zhuang Miao, Zhi-Peng Hou, Zhi-Peng Hou, Hong-Chang Cheng, Hong-Chang Cheng, Feng Shi, Feng Shi, Gang-Cheng Jiao, Gang-Cheng Jiao, Xiao-Feng Bai, Xiao-Feng Bai, Sen Niu, Sen Niu, Long Wang, Long Wang, Ling-Yun Fu, Ling-Yun Fu, } "Cooperative chemisorption of K and O elements on cleaved GaAs(110) surface ", Proc. SPIE 9284, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronics Materials and Devices for Sensing and Imaging, 92841G (2 September 2014); doi: 10.1117/12.2069815; https://doi.org/10.1117/12.2069815
PROCEEDINGS
6 PAGES


SHARE
Back to Top