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CH 3 NH 3 PbI 3 is deposited as a light absorber on a mesoporous TiO 2 film and the structure and morphology are investigated at different table temperatures and with various amounts of added CH 3 NH 3 Cl. The optimized device exhibits the highest power conversion efficiency of 12.3% with an average value of 11.2%.
Li et al. (2014) studied this question.