Accelerated aging of all-inorganic, interface-stabilized perovskite solar cells

Xiaoming Zhao, Tianran Liu, Quinn C. Burlingame, Tianjun Liu, Rudolph Holley, Guangming Cheng, Nan Yao, Feng Gao, Yueh Lin Loo

Research output: Contribution to journalArticlepeer-review

134 Scopus citations


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 CsPbI3 PSCs under constant illumination. Incorporating a two-dimensional (2D) Cs2PbI2Cl2 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.

Original languageEnglish (US)
Pages (from-to)307-310
Number of pages4
Issue number6603
StatePublished - Jul 15 2022

All Science Journal Classification (ASJC) codes

  • General


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