fig9

Figure 9. (A) PCE versus bandgap energy of eight perovskites. The filled symbols represent predicted results from ML, while the empty symbol represents experimental data. Copyright from Wiley^[64]. (B) J-V curves of undoped and 3% KI-doped PSCs. Copyright from Springer Nature^[65]. (C) Contribution of features under different temperatures. The feature importance is calculated from GBT regression and SHAP assessment, where aging_temp denotes aging temperature, dep_method denotes deposition method, Ost denotes over-stoichiometric with excess iodide, and α-δ denotes the probability of phase transition in humid air. The purple and orange color indicates low and high values of a given feature. Copyright from Springer Nature^[66]. PCE: Power conversion efficiency; PSCs: perovskite solar cells; GBT: gradient boosting tree; SHAP: shapley additional explaining.