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Comparative study of hydrogen stability in hydrogenated amorphous and crystalline silicon

机译:氢化非晶硅和晶体硅中氢稳定性的比较研究

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摘要

The dependence of hydrogen effusion and diffusion on hydrogen concentration was studied for crystalline and amorphous Si:H samples which were hydrogenated by hydrogen ion implantation. The results are compared to data for a-Si:H and mu c-Si:H films grown with various H concentrations. Although general trends of the H concentration dependence of H stability are similar, there are differences between cSi:H and a-Si:H. These differences involve larger hydrogen-generated microstructural effects in c-Si:H and a hydrogen diffusion coefficient in compact material increasing in a-Si:H and decreasing in c-Si:H with increasing H concentration. A different flexibility of the atomic network in amorphous and crystalline Si could be the origin, Microcrystalline Si:H films show a similar concentration dependence of H diffusion as a-Si:H. (C) 2000 Elsevier Science B.V. All rights reserved. [References: 14]
机译:对于通过氢离子注入氢化的结晶和非晶Si:H样品,研究了氢的扩散和扩散对氢浓度的依赖性。将结果与以各种H浓度生长的a-Si:H和mu c-Si:H薄膜的数据进行比较。尽管H浓度对H浓度依赖性的一般趋势相似,但cSi:H和a-Si:H之间存在差异。这些差异涉及氢在c-Si:H中产生的更大的微观结构效应,以及致密材料中的氢扩散系数在a-Si:H中增加,而在c-Si:H中随着H浓度的增加而减小。原子网络在非晶硅和晶体Si中的不同柔韧性可能是起源,微晶Si:H薄膜显示出与a-Si:H相似的H扩散浓度依赖性。 (C)2000 Elsevier Science B.V.保留所有权利。 [参考:14]

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