Reversible Methanolation of Metal Halide Perovskites

Bryan Rosales, Laura Mundt, Laura Schelhas, Lance Wheeler

Research output: Contribution to journalArticlepeer-review

28 Scopus Citations


The low formation energies inherent in metal halide perovskites enable the structure to be easily broken and remade with little energy input. In this work, we leverage low formation energy to demonstrate 0D/3D structural transformations induced by reversible intercalation of methanol to yield dramatic control of visible light absorption. We identify a methanolated structure that features sheets of 0D isolated [PbI6]4– octahedra separated by MAI and methanol. Methanol and water reversibly displace each other in the 0D complex by controlling the chemical potential of the system via Le Chatelier’s principle. The weaker H-bonding of methanol compared to water effectively reduces the complex dissociation temperature from 70 to 50 °C, rendering the methanol complex more desirable for an array of next-generation applications spanning low-power-consumption memory to switchable photovoltaics.

Original languageAmerican English
Pages (from-to)667-672
Number of pages6
JournalJournal of the American Chemical Society
Issue number2
StatePublished - 2022

Bibliographical note

Publisher Copyright:
Not subject to U.S. Copyright. Published 2022 by American Chemical Society

NREL Publication Number

  • NREL/JA-5900-80954


  • materials science
  • metal halide perovskites
  • switchable
  • windows


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