Fig. 4: Stability performance.
From: Confining iodide migration with quantified barrier for durable perovskite solar cells
a, b Time-of-flight secondary ion mass spectrometry mapping of I− signals in hole transport layer/Au electrode from the aged PSCs based on different perovskite. The analysis area is 150 × 150 μm2. c Maximum power point (MPP) tracking results of the perovskite solar cells (PSCs) based on FAPbI3 film, the average initial power conversion efficiency (PCE) of target and control PSCs are 25.58% and 24.11%. d MPP tracking results in the PSCs based on perovskite films of FAMAPbI3, FACsPbI3, and FAMACsPbI3. e Damp-heat stability results of the PSCs based on FAPbI3 film, the average initial PCE of target and control PSCs are 25.68% and 24.19%. f MPP tracking results in the PSCs based on perovskite films of FAMAPbI3, FACsPbI3, and FAMACsPbI3. g Light/dark cycling stability results of the PSCs based on FAPbI3 film, the average initial PCE of target and control PSCs are 25.71% and 24.24%. h Light/dark cycling stability results in the PSCs based on perovskite films of FAMAPbI3, FACsPbI3, and FAMACsPbI3. The error bars denote standard deviation for four individual devices.
