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The impact of sodium contamination in tin sulfide thin-film solar cells
V. Steinmann, R.E. Brandt, R. Chakraborty, R. Jaramillo, M.R. Young, B.K. Ofori-Okai, C. Yang, A. Polizzotti, K.A. Nelson, R.G. Gordon, and T. BuonassisiAPL Materials 4, 026103 (2016)