Insights into the operational stability of wide-bandgap perovskite and tandem solar cells under rapid thermal cycling.

ABSTRACT: Temperature variations can induce phase transformations and strain in perovskite solar cells (PSCs), undermining their structural stability and device performance. Despite growing interest, the operational stability of triple-cation wide-bandgap (WBG) PSCs and tandem solar cells (TSCs) under rapid solar-thermal cycling remains poorly understood. Here, we investigate the operational stability of WBG PSCs (~1.68 eV) with a champion power conversion efficiency (PCE) of 24.31% and extend the study to TSCs. We find that degradation during device operation under rapid solar-thermal cycling (temperature change rate of 10 °C/min) is independent of passivation and occurs in two distinct regimes: an initial burn-in phase, which accounts for a rapid 60% relative loss in performance, followed by a ste

SUBMITTER: Sun K 

PROVIDER: S-EPMC12808105 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature