Improving Stability of Triple-Cation Perovskite Solar Cells Under High-Temperature Operation

Amy Louks, Robert Tirawat, Mengjin Yang, Severin Habisreutinger, Steven Harvey, Kelly Schutt, Kai Zhu, Joseph Berry, Axel Palmstrom

Research output: Contribution to journalArticlepeer-review

3 Scopus Citations


Metal halide perovskite photovoltaic performance required for commercial technology encompasses both efficiency and stability. Advances in both these parameters have recently been reported; however, these strategies are often difficult to directly compare due to differences in perovskite composition, device architecture, fabrication methods, and accelerated stressors applied in stability tests. In particular, it is found that there is a distinct lack of elevated temperature, operational (light and bias) stability data. Furthermore, significant testing is required to understand the interactions when combinations are used (e.g., additives used with posttreatments). Herein, individual and combined additive, posttreatment, and contact layer strategies from recent literature reports under standardized operational stability tests of p–i–n CsMAFA perovskites at 70 °C are evaluated. Through analysis of over 1000 devices, it is concluded that the hole-transport layer (HTL) is the most significant component impacting elevated temperature operational stability. This analysis motivates future development of high-performance HTLs.

Original languageAmerican English
Article number2300248
Number of pages8
JournalSolar RRL
Issue number16
StatePublished - 2023

Bibliographical note

Publisher Copyright:
© 2023 Wiley-VCH GmbH.

NREL Publication Number

  • NREL/JA-5K00-85931


  • high temperatures
  • perovskites
  • solar cells
  • stability


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