Nature Communications (Aug 2021)

Mobile ions determine the luminescence yield of perovskite light-emitting diodes under pulsed operation

  • Naresh Kumar Kumawat,
  • Wolfgang Tress,
  • Feng Gao

DOI
https://doi.org/10.1038/s41467-021-25016-5
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 8

Abstract

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Pulsed operation of perovskite light-emitting diodes is of particular importance in display and visible light communication, yet the ionic behaviour under this mode is not well-understood. Here, the authors reveal that the transient electroluminescence intensity increases with increasing pulse width as the result of accumulation of mobile ions at the interfaces.