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Spin-coated uniform Sb2S3 thin films for photovoltaic applications by solvent engineering
- Spin-coated uniform Sb2S3 thin films for photovoltaic applications by solvent engineering
- Gil, Eun Kyung; Lee, Sang Ju; Sung, Shi Joon; Kim, Dae Hwan; Cho, Kuk Young
- DGIST Authors
- Gil, Eun Kyung; Lee, Sang Ju; Sung, Shi Joon; Kim, Dae Hwan
- Issue Date
- Nanoscience and Nanotechnology Letters, 9(9), 1327-1331
- Article Type
- Deposition; Morphology; Sb2S3; Sensitized Solar-Cells; Solar Cells; Spin Coating; Thin Film
- 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.
- American Scientific Publishers
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- Convergence Research Center for Solar Energy1. Journal Articles
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