Fig. 4From: Controllable Two-dimensional Perovskite Crystallization via Water Additive for High-performance Solar Cellsa Absorption spectra of BA2MA3Pb4I13 films without and with 3% H2O. b EQE spectra and integrated current curve of corresponding devices. c Dark current-voltage curves of the HODs based on corresponding 2D perovskite films (inset: configuration of HODs). d TRPL spectra of corresponding 2D perovskite filmsBack to article page