Nature Communications (Jun 2017)

Diffusion engineering of ions and charge carriers for stable efficient perovskite solar cells

  • Enbing Bi,
  • Han Chen,
  • Fengxian Xie,
  • Yongzhen Wu,
  • Wei Chen,
  • Yanjie Su,
  • Ashraful Islam,
  • Michael Grätzel,
  • Xudong Yang,
  • Liyuan Han

DOI
https://doi.org/10.1038/ncomms15330
Journal volume & issue
Vol. 8, no. 1
pp. 1 – 7

Abstract

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Ion migration in perovskite solar cells are known to cause hysteresis and instability. Biet al., report a charge extraction layer based on graphene, fullerenes and carbon quantum dots which suppresses ion diffusion and enhances charge carrier diffusion leading to efficient devices with improved stability.