Spin-Coated Uniform Sb2S3 Thin Films for Photovoltaic Applications by Solvent Engineering
- Authors
- Gil, Eun Kyung; Lee, Sang-Ju; Sung, Shi-Joon; Kim, Dae-Hwan; Cho, Kuk Young
- Issue Date
- Sep-2017
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Sb2S3; Thin Film; Spin Coating; Morphology; Solar Cells
- Citation
- NANOSCIENCE AND NANOTECHNOLOGY LETTERS, v.9, no.9, pp.1327 - 1331
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANOSCIENCE AND NANOTECHNOLOGY LETTERS
- Volume
- 9
- Number
- 9
- Start Page
- 1327
- End Page
- 1331
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/9047
- DOI
- 10.1166/nnl.2017.2457
- ISSN
- 1941-4900
- Abstract
- Spin-coated Sb2S3 inorganic semiconductor thin films are a good substitute for conventional Sb2S3 absorbers prepared by chemical bath deposition due to the ability to control antimony oxide defects and the simplicity of the spin-coating process. However, precise control of the morphology of the Sb2S3 thin films is crucial for optimizing the photovoltaic properties of inorganic-organic hybrid solar cells. In this work, we attempt to fabricate high-purity Sb2S3 thin films with a uniform morphology via solvent engineering. The compositional ratio and concentration of the precursor solutions containing SbCl3 and thiourea are varied, and the chemical composition and morphology of the spin-coated Sb2S3 thin films are investigated. The morphology of the Sb2S3 thin films is predominantly determined by the morphology of the precursor films, which are formed by a complex reaction between SbCl3 and thiourea after the spin-coating process. Controlling the complex reaction enables the fabrication of uniform Sb2S3 thin films using the spin-coating process. In order to evaluate the photovoltaic properties of the spin-coated Sb2S3 thin films, planar Sb2S3 solar cells comprised of Au/Poly-3-hexylthiophene/Sb2S3/bl-TiO2/FTO are fabricated, and the current-voltage characteristics of these solar cells are investigated.
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