Abstract
In article number 2001509, Cheng-Liang Liu and coworkers demonstrate the scalable ultrasonic spray-coating method combined with ternary channel pumping of precursor solutions and vacuum-assisted thermal annealing to fabricate large-area MAPbI3−xBrx mixed halide perovskite films of size 7 × 10 cm2. Eight subcells are obtained with a champion and average PCE of 17.11% and 16.25 ± 0.77%, respectively.
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