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Spin-coated uniform Sb2S3 thin films for photovoltaic applications by solvent engineering

Title
Spin-coated uniform Sb2S3 thin films for photovoltaic applications by solvent engineering
Authors
Gil, Eun KyungLee, Sang JuSung, Shi JoonKim, Dae HwanCho, Kuk Young
DGIST Authors
Gil, Eun Kyung; Lee, Sang Ju; Sung, Shi Joon; Kim, Dae Hwan
Issue Date
2017-09
Citation
Nanoscience and Nanotechnology Letters, 9(9), 1327-1331
Type
Article
Article Type
Article
Keywords
DepositionMorphologySb2S3Sensitized Solar-CellsSolar CellsSpin CoatingThin Film
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.
URI
http://hdl.handle.net/20.500.11750/4811
DOI
10.1166/nnl.2017.2457
Publisher
American Scientific Publishers
Related Researcher
Files:
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Collection:
Convergence Research Center for Solar Energy1. Journal Articles


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