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对氢化非晶[化学式：见原文]在整个成分范围内的光学性质进行微组合采样，以建立一个光电子学数据库。

Micro-combinatorial sampling of the optical properties of hydrogenated amorphous [Formula: see text] for the entire range of compositions towards a database for optoelectronics.

作者信息

Kalas Benjamin, Zolnai Zsolt, Sáfrán György, Serényi Miklós, Agocs Emil, Lohner Tivadar, Nemeth Attila, Khánh Nguyen Quoc, Fried Miklós, Petrik Peter

机构信息

Institute for Technical Physics and Materials Science, Centre for Energy Research, Konkoly-Thege Rd. 29-33, 1121 Budapest, Hungary.

Institute for Particle and Nuclear Physics, Wigner Research Centre for Physics, Konkoly-Thege Rd. 29-33, 1121 Budapest, Hungary.

出版信息

Sci Rep. 2020 Nov 6;10(1):19266. doi: 10.1038/s41598-020-74881-5.

DOI:10.1038/s41598-020-74881-5
PMID:33159099
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7648109/
Abstract

The optical parameters of hydrogenated amorphous a-[Formula: see text]:H layers were measured with focused beam mapping ellipsometry for photon energies from 0.7 to 6.5 eV. The applied single-sample micro-combinatorial technique enables the preparation of a-[Formula: see text]:H with full range composition spread. Linearly variable composition profile was revealed along the 20 mm long gradient part of the sample by Rutherford backscattering spectrometry and elastic recoil detection analysis. The Cody-Lorentz approach was identified as the best method to describe the optical dispersion of the alloy. The effect of incorporated H on the optical absorption is explained by the lowering of the density of localized states in the mobility gap. It is shown that in the low-dispersion near infrared range the refractive index of the a-[Formula: see text] alloy can be comprehended as a linear combination of the optical parameters of the components. The micro-combinatorial sample preparation with mapping ellipsometry is not only suitable for the fabrication of samples with controlled lateral distribution of the concentrations, but also opens new prospects in creating databases of compounds for optical and optoelectonic applications.

摘要

采用聚焦光束映射椭圆偏振光谱法测量了氢化非晶α-[化学式：见原文]：H层在0.7至6.5 eV光子能量范围内的光学参数。所应用的单样品微组合技术能够制备出具有全成分范围分布的α-[化学式：见原文]：H。通过卢瑟福背散射光谱法和弹性反冲检测分析，在样品20毫米长的梯度部分揭示了线性变化的成分分布。科迪-洛伦兹方法被确定为描述该合金光学色散的最佳方法。掺入的H对光吸收的影响可通过迁移率隙中局域态密度的降低来解释。结果表明，在低色散近红外范围内，α-[化学式：见原文]合金的折射率可理解为各组分光学参数的线性组合。采用映射椭圆偏振光谱法的微组合样品制备不仅适用于制备具有可控横向浓度分布的样品，而且为创建光学和光电子应用化合物数据库开辟了新前景。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/b4974ef263d0/41598_2020_74881_Fig14_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/61decf0de479/41598_2020_74881_Fig1_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/859dda3d1474/41598_2020_74881_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/dd822cc63976/41598_2020_74881_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/e75f465a9484/41598_2020_74881_Fig5_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/646d86f74710/41598_2020_74881_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/b32a88b67d23/41598_2020_74881_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/fafa50d930c9/41598_2020_74881_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/e2404871fa22/41598_2020_74881_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/e1dfc9a3d163/41598_2020_74881_Fig12_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/9dbdc276a0b3/41598_2020_74881_Fig13_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/b4974ef263d0/41598_2020_74881_Fig14_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/61decf0de479/41598_2020_74881_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/b7c3c40e55e9/41598_2020_74881_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/859dda3d1474/41598_2020_74881_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/dd822cc63976/41598_2020_74881_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/e75f465a9484/41598_2020_74881_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/ab47ecac2fdd/41598_2020_74881_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/b8215a78f529/41598_2020_74881_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/646d86f74710/41598_2020_74881_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/b32a88b67d23/41598_2020_74881_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/fafa50d930c9/41598_2020_74881_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/e2404871fa22/41598_2020_74881_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/e1dfc9a3d163/41598_2020_74881_Fig12_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/9dbdc276a0b3/41598_2020_74881_Fig13_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9ede/7648109/b4974ef263d0/41598_2020_74881_Fig14_HTML.jpg

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