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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Hydrogen absorption and diffusivity in ZnO single crystals
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Hydrogen absorption and diffusivity in ZnO single crystals

机译：ZnO单晶中的氢吸收和扩散率

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摘要

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.
机译：表征了电化学上带氢的ZnO单晶。通过核反应分析确定引入到晶体中的氢的浓度，并且发现其与根据法拉第定律估算的值在合理的范围内。此外，通过由氢引起的应力引起的塑性变形，形成了具有非常高的氢浓度和非常高的疏松缺陷密度的表面下层。在载氢的晶体上观察到由氢引起的沿c方向滑移引起的比表面改性。 ZnO中的氢扩散系数通过原位电阻率测量估算。已经发现氢在c方向上的扩散比在a方向上的快，这很可能是由于纤锌矿结构中沿c轴存在的开放通道。

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