Optimization of CdS Buffer Layer for High Efficiency CIGS Solar Cells
- Authors
- Kim D.[Kim D.]; Jang Y.-J.[Jang Y.-J.]; Jung H.-S.[Jung H.-S.]; Kim M.[Kim M.]; Baek D.[Baek D.]; Yi J.[Yi J.]; Lee J.[Lee J.]; Choi Y.[Choi Y.]
- Issue Date
- May-2016
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.16, no.5, pp.5074 - 5077
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 16
- Number
- 5
- Start Page
- 5074
- End Page
- 5077
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/36673
- DOI
- 10.1166/jnn.2016.12171
- ISSN
- 1533-4880
- Abstract
- In present work, effects of the thickness on the structural and optical properties of chemically deposited CdS thin films were investigated. In addition, we fabricated Cu(In, Ga)Se-2 solar cells with various thicknesses of CdS buffer layer and optimized the thickness for a high efficiency. When the CdS thin films were thicker, the crystallinity improved but the transmittance decreased. The short-circuit current density (J(sc)) and the fill factor are the major efficiency limiting factors for the CIGS solar cells. As the thickness of the CdS buffer layer, the open-circuit voltage (V-oc) and the fill factor increased, whereas the J(sc) slightly decreased. The improvement of the fill factor and thus efficiency resulted from larger shunt resistance. For the solar cells without a high resistive intrinsic ZnO layer, the highest efficiency was acquired at the thickness of 89 nm. With further increasing the thickness, the Jsc decreased significantly, resulting in poor efficiency.
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Collections - Information and Communication Engineering > School of Electronic and Electrical Engineering > 1. Journal Articles
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