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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 15,
  • Issue 9,
  • pp. 093501-
  • (2017)

Thermal-stable mixed-cation lead halide perovskite solar cells

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Abstract

As perovskite solar cells show tremendous potential for widespread applications, we find that adding inorganic thermal-stable cesium ions into MAPbI3 results in significantly improves thermal stability. For un-encapsulated perovskite devices, the energy conversion efficiency maintains about 75% of its original value (over 15%) in the MA0.85Cs0.05PbI3 device under 80 min of heating at 140°C in a dry atmosphere (RH≤30%). With significantly improved thermal stability achieved by a convenient process, it is expected that this type of mixed-cation perovskites can further facilitate large scale applications.

© 2017 Chinese Laser Press

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