文章基本信息

标题：THE EFFECT OF HYDROGEN CONCENTRATION ON REFRACTIVE INDEX AND OPTICAL GAP IN HYDROGENATED AMORPHOUS SILICON
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作者：Sachin Saxena ; Garima Nigam
期刊名称：SCHOLARLY RESEARCH JOURNAL FOR INTERDISCIPLINARY STUDIES
印刷版ISSN：2319-4766
电子版ISSN：2278-8808
出版年度：2017
卷号：4
期号：35
页码：6038-6046
语种：English
出版社：SCHOLARLY RESEARCH JOURNAL'S
摘要：The optical properties of a-Si:H have been measured by several workers but there has been no suitable model to explain these results. A quantitative model for the incorporation of hydrogen in aSi:H network to introduce hydrogen dependency of the optical properties has been developed. The concept of bond polarizabilities has been used to compute refractive index of a-Si:H as a function of hydrogen concentration. The results obtained have been compared with recent experimental results and the discrepancy has been explained. It has been found that the optical gap (Eg) increases with the increase of hydrogen concentration (CH). The results have been found to be consistent with the recent experimental results. Other results have also been compared and a theoretical relation Eg = 1.5 + 1.2 CH is thus obtained which corresponds reasonably well with the experimental results.