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Optical properties ...
Optical properties of Cu2ZnSn(SxSe1-x)(4) solar absorbers : Spectroscopic ellipsometry and ab initio calculations
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- Li, Shu-Yi (author)
- Uppsala universitet,Fasta tillståndets elektronik
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- Zamulko, Sergiy (author)
- Univ Oslo, Dept Phys, Ctr Mat Sci & Nanotechnol, NO-0316 Oslo, Norway.
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- Persson, Clas (author)
- KTH,Materialvetenskap,Univ Oslo, Norway
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- Ross, Nils (author)
- Uppsala universitet,Fasta tillståndets elektronik,Univ Oslo, Dept Phys, Ctr Mat Sci & Nanotechnol, NO-0316 Oslo, Norway.
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- Larsen, Jes K. (author)
- Uppsala universitet,Fasta tillståndets elektronik
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- Platzer-Björkman, Charlotte (author)
- Uppsala universitet,Fasta tillståndets elektronik
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(creator_code:org_t)
- AIP Publishing, 2017
- 2017
- English.
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In: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 110:2
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https://doi.org/10.1...
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Abstract
Subject headings
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- Dielectric functions of Cu2ZnSn(SxSe1-x)(4) thin film absorbers with varied x were determined by spectroscopic ellipsometry and ab initio calculations. From the combination of experimental and theoretical studies, the fundamental interband transition energy E-0 (similar to 1-1.5 eV) and the next following transition energy E-1 (similar to 2-3 eV) were identified and found to blue-shift with increasing sulfur anion content, while keeping the energy separation E-1 - E-0 almost constant, similar to 1.4 eV from experiments, and 1 eV from theory. In addition, the average dielectric responses were found to decrease with sulfur anion content from both theoretical and experimental results. The Tauc optical bandgap value E-g determined on samples prepared on Mo and soda lime glass substrate showed a positive linear relationship between x and bandgap E-g. The bandgap bowing factor determined from the theoretical data is 0.09 eV. (C) 2017 Author(s).
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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