Nature Communications (May 2017)

Structure and interstitial iodide migration in hybrid perovskite methylammonium lead iodide

  • J. L. Minns,
  • P. Zajdel,
  • D. Chernyshov,
  • W. van Beek,
  • M. A. Green

DOI
https://doi.org/10.1038/ncomms15152
Journal volume & issue
Vol. 8, no. 1
pp. 1 – 5

Abstract

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The mechanism underpinning the photovoltaic effect in hybrid perovskite solar cells has remained unclear. Here, Green and co-workers suggest that iodide ions in methylammonium lead iodide perovskite migrate via interstitial sites and undergo a redox reaction to form molecular iodine and free electrons.