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Bi2S3 is a promising inorganic material for thin film photovoltaic application with optimum direct band gap of ~1.3eV, strong absorption coefficient, nontoxic and simple composition. Here we introduce rapid thermal evaporation (RTE), a method with simple facility and extremely fast deposition speed, to produce high quality Bi2S3 films. By optimizing the substrate temperature and post-annealing process,...
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