Abstract
Solar Cells Performance efficiencies of inorganic-organic perovskite solar cells exceeding 20% have been reported for areas typically of 0.1 cm2 or less. If larger areas of the same materials are tried, defects limit charge carrier transport, and efficiency drops. Li et al. induced rapid crystallization by vacuum-flash evaporation of solvents to obtain high-quality films and obtained efficiencies of ∼20% for illuminated areas exceeding 1 cm2 centimeter. Science , this issue p. [58][1] [1]: /lookup/doi/10.1126/science.aaf8060
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