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Hydrogen‐ and corrosion‐induced defect characterization of Zn O single crystal: A slow positron beam study
Author(s) -
Xue XuDong,
Wang Tao,
Jiang Jing,
Wu YiChu
Publication year - 2013
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201329009
Subject(s) - characterization (materials science) , corrosion , materials science , positron , single crystal , hydrogen , crystallography , crystal (programming language) , beam (structure) , metallurgy , nanotechnology , nuclear physics , chemistry , physics , optics , computer science , electron , organic chemistry , programming language
Hydrogen‐ and corrosion‐induced microstructure and defects of ZnO single crystal under acidic conditions have been studied by using slow positron beam spectroscopy and microscopy techniques. Slow positron beam measurements revealed that a near‐surface damaged region with a high concentration of defects was formed after hydrogen charging, but not after corrosion. The formation of hexagonal pyramids was found after electrochemical charging with hydrogen, while the formation of stepped hexagonal pits was observed after direct immersion in the solution. The incorporation of hydrogen by electrochemical charging enhanced the near‐band‐edge (NBE) emission intensity.