Cs and O co-adsorption on p-type Al0.5Ga0.5N (0001) UV photocathode surface

Yanjun Ji,Junping Wang, Xu Chao,Yujie Du

Materials Science And Engineering: B（2023）

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摘要

•The co-adsorption of Cs, O atoms on p-type Al0.5Ga0.5N (0001) surface was calculated.•The surface with Cs at H3 site under the adsorption of 2Cs2O1Cs is the most ideal photocathode surface.•The adsorbed atoms form a Cs-O-Cs-O-Cs structure forming three-staged dipole moments formed by surface → Cs-O → Cs-O → Cs.

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关键词

Photocathode,Adsorption energy,Dipole,Absorption coefficient

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