Accelerated aging of all-inorganic, interface-stabilized perovskite solar cells.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 35709247.
- Also identified by DOI 10.1126/science.abn5679.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
To understand degradation routes and improve the stability of perovskite solar cells (PSCs), accelerated aging tests are needed. Here, we use elevated temperatures (up to 110°C) to quantify the accelerated degradation of encapsulated CsPbI<sub>3</sub> PSCs under constant illumination. Incorporating a two-dimensional (2D) Cs<sub>2</sub>PbI<sub>2</sub>Cl<sub>2</sub> capping layer between the perovskite active layer and hole-transport layer stabilizes the interface while increasing power conversion efficiency of the all-inorganic PSCs from 14.9 to 17.4%. Devices with this 2D capping layer did not degrade at 35°C and required >2100 hours at 110°C under constant illumination to degrade by 20% of their initial efficiency. Degradation acceleration factors based on the observed Arrhenius temperature dependence predict intrinsic lifetimes of 51,000 ± 7000 hours (>5 years) operating continuously at 35°C.