Strain regulation retards natural operation decay of perovskite solar cells.

ABSTRACT: Perovskite solar cells (pero-SCs) have undergone rapid development in the past decade. However, there is still a lack of systematic studies investigating whether the empirical rules of working lifetime assessment used for silicon solar cells can be applied to pero-SCs. It is believed that pero-SCs show enhanced stability under day/night cycling owing to the reported self-healing effect in the dark^1,2. Here we find that the degradation of highly efficient FAPbI₃ pero-SCs is much faster under a natural day/night cycling mode, bringing into question the widely accepted approach to estimate the operational lifetime of pero-SCs based on continuous-mode testing. We reveal the key factor to be the lattice strain caused by thermal expansion and shrinking of the perovskite dur

SUBMITTER: Shen Y 

PROVIDER: S-EPMC11602722 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature