Abstract
The quality of perovskite film seriously affects the performance of organic-inorganic hybrid halide perovskite solar cells. In this paper, we demonstrate an anti-solvent treatment by controlling the perovskite recrystallize to enhance the quality of perovskite film and photophysical properties, including crystallinity, high coverage and high absorption. The fabricated carbon-based perovskite solar cells show PCE improvement from 6.82% to 10.81% with less hysteresis, and remained 90% of the original value after 93 days in the air environment. Our work provides a way to prepare simple and stable perovskite devices with high stability and low cost. • The high-stability perovskite solar cells (PSCs) based on carbon electrode was fabricated under humidity air atmosphere. • The crystallization kinetics of perovskite was optimized by anti-solvent CB washing and high-quality films were prepared. • We investigated the effect of different dosage of CB the on PSCs. • The power conversion efficiency (PCE) of champion PSC was 10.81% with optimum dosage CB (100 μ L).
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