期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 580, 期 -, 页码 S51-S54出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2013.02.075
关键词
ZnO; Hydrogen; Diffusion; Electrical resistivity; Nuclear reaction analysis
资金
- Czech Science agency [P108/11/0958]
- Ministry of Education, Youths and Sports of the Czech Republic [LH12173]
- Charles University in Prague [SVV-2012-265303]
ZnO single crystals electrochemically charged with hydrogen were characterized. The concentration of hydrogen introduced into the crystals was determined by nuclear reaction analysis and was found to be in a reasonable agreement with the value estimated from the Faraday's law. Moreover, a sub-surface layer with very high concentration of hydrogen and very high density of open-volume defects was formed by plastic deformation caused by hydrogen-induced stress. Specific surface modification caused by hydrogen-induced slip in the c-direction was observed on hydrogen loaded crystals. Hydrogen diffusion coefficient in ZnO was estimated by in situ electrical resistivity measurement. It was found that hydrogen diffusion in the c-direction is faster than in the a-direction most probably due to open channels existing in the wurtzite structure along the c-axis. (C) 2013 Elsevier B.V. All rights reserved.
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