Nature Communications (Feb 2016)

Ionic polarization-induced current–voltage hysteresis in CH3NH3PbX3 perovskite solar cells

  • Simone Meloni,
  • Thomas Moehl,
  • Wolfgang Tress,
  • Marius Franckevičius,
  • Michael Saliba,
  • Yong Hui Lee,
  • Peng Gao,
  • Mohammad Khaja Nazeeruddin,
  • Shaik Mohammed Zakeeruddin,
  • Ursula Rothlisberger,
  • Michael Graetzel

DOI
https://doi.org/10.1038/ncomms10334
Journal volume & issue
Vol. 7, no. 1
pp. 1 – 9

Abstract

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The origin of hysteresis remains an open question in lead-halide perovskite solar cells. Here, Meloni et al. investigate the causes of hysteresis using an experimental and computational approach, finding that the observed hysteresis is due to halide ion-vacancy movement in the perovskite.