کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1613362 | 1005597 | 2013 | 4 صفحه PDF | دانلود رایگان |

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.
► Hydrothermally grown ZnO crystals were electrochemically doped with hydrogen.
► Depth profile of hydrogen concentration introduced into the crystal was determined.
► Hydrogen loading created sub-surface region with high hydrogen concentration.
► Hydrogen-induced plastic deformation causes specific surface modification.
► Hydrogen diffusion in ZnO is faster in the c-direction than in the a-direction.
Journal: Journal of Alloys and Compounds - Volume 580, Supplement 1, 15 December 2013, Pages S51–S54