Fig. 4: The relationship between device stability and different functional layers.
From: Big data driven perovskite solar cell stability analysis
The kernel density estimation of the log(TS80m) values and the bar chart of TA/TB ratios for unencapsulated devices with a, b different perovskite absorbers (3D, i.e., three-dimensional perovskites; 2D, i.e., two-dimensional perovskites; 3D/2D, i.e., three-dimensional perovskites with two-dimensional perovskite capping layers), where the ratio of three-dimensional devices is set to 1. c, d different hole transport layers (HTLs) and electrodes, where the ratio of doped organic HTL devices is set to 1. e, f different electron transport layers (ETLs), where the ratio of TiO2 compact layer devices is set to 1. (np stands for nanoparticles, c stands for compact layers, and mp stands for mesoporous layers).
