Suppressing solvent adducts via coordination competition enables scalable perovskite photovoltaics
Suppressing solvent adducts via coordination competition enables scalable perovskite photovoltaics
研究概述
研究内容请参见论文原文。
谱图与表征信息
Fig.2 The Interactions between 2OH additives, solvents, and perovskite. a, In-situ GIXRD intensity maps of control and 2OH perovskite films during the gas quenching process. The orange circle highlights the PbI2-NMP solvent phase. b, FTIR spectra of pure PbI2, 2OH, and the PbI2- 2OH complex. c, FTIR spectra of pure FAI, 2OH, and FAI-2OH complex. d, FTIR spectra of pure NMP, 2OH, PbI2-NMP, and the PbI2-2OH-NMP complexes. e, The k3-weighted Fourier transforms in R-space of the EXAFS at the Pb LIII-edge of the PbI2-NMP, and 2OH-PbI2-NMP. f, XRD patterns of the pure PbI2, 2OH and the PbI2-2OH complex (left), pure FAI, 2OH and FAI- 2OH complex (right). Left panel: diamonds mark the PbI2 (001) reflection at 12.74°, whereas circles indicate the 9.91° peak of the PbI2–2OH one‐dimensional phase. Right panel: the bottom green trace is the simulated FAI reference, and squares denote the FAI (040) reflection at 25.69°. arb. units, arbitrary units.