Effects of compression and controlled selenization on powder-fabricated Cu (In,Ga)Se-2 thin films
- Authors
- Song, Bong-Geun; Ahn, Hak-Young; Park, Bo-In; Park, Hyung-Ho; Ju, Byeong-Kwon; Lee, Seung Yong; Park, Jong-Ku; Cho, So-Hye
- Issue Date
- 1-5월-2019
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Photovoltaic materials; Cu(In Ga)Se-2; Light absorbing layer; Thin films; Powder process
- Citation
- APPLIED SURFACE SCIENCE, v.475, pp.158 - 161
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED SURFACE SCIENCE
- Volume
- 475
- Start Page
- 158
- End Page
- 161
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/65473
- DOI
- 10.1016/j.apsusc.2018.12.196
- ISSN
- 0169-4332
- Abstract
- Cu(In,Ga)Se-2 thin films have been used as a light absorbing layer in high-efficiency solar cells. Among many methods, the powder process for fabricating Cu(In,Ga)Se-2 thin films is advantageous, due to its simplicity and minimal usage of materials. However, Cu(In,Ga)Se-2 layers produced by the powder process often result in high porosity and small grain sizes, which has been a significant barrier to wide application. In this report, we demonstrate that simple compression of the Cu(In,Ga)S-2 powder coat and a cost-efficient selenization using a mixture of Se and Al2O3 can reduce porosity and enlarge the grain size. It is surmised that improved particle packing density in the powder coats, in addition to sintering with a steady supply of Se vapor, synergistically enhances highly sintered Cu(In,Ga)Se-2 thin films.
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Collections - College of Engineering > School of Electrical Engineering > 1. Journal Articles
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