'Ion-freeze' efficiency in perovskite solar cells: time scales for ion immobilization.

ABSTRACT: It is essential to shed light on the complex multiscale dynamics of mobile ions in perovskite solar cells for developing efficiency testing protocols, gaining a deeper understanding of the degradation mechanisms, improving long-term stability, and, ultimately, driving the commercialization of this technology. This study provides characteristic times for inhibiting the presence of mobile ions in efficiency measurements, enabling a comparison between 'ion-freeze' and steady-state efficiencies to quantify ion-induced degradation losses. Using current transient analysis during current-voltage measurements for a wide range of sweep rates, we achieve precise time-scale mapping of the complex ionic landscape of perovskites, spanning from ion immobilization (at time scales much shorter than the di

SUBMITTER: H Balaguera E 

PROVIDER: S-EPMC12495390 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature