Interlayer Triplet-Sensitized Luminescence in Layered Two-Dimensional Hybrid Metal-Halide Perovskites

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Here we review an emerging class of 2D layered metal-halide perovskites that exhibit important photophysical behavior involving inorganic exciton-To-molecular triplet energy flow. These novel systems have potential to impact several energy-related fields and processes, including optoelectronics, photon upconversion strategies, and triplet-based photocatalysis. Early studies provided initial guidance and revealed several intriguing questions that more recent developments, in terms of both expanded and diversified compositional tuning and more sophisticated characterization, have begun to answer. These questions center around the delicate interplay between physical and electronic structure that is perturbed by choice of perovskite structural motif and organic spacer properties. In addition to their distinct natures, the energy offsets between the metal-halide and molecular excitons can be leveraged for a variety of unique effects and emergent properties, including fast interlayer energy transfer. We review the key advances with an eye toward strategies for controlling photophysical outcomes based on structure-energy-function relationships.

Original languageAmerican English
Pages (from-to)4079-4096
Number of pages18
JournalACS Energy Letters
Issue number11
StatePublished - 12 Nov 2021

Bibliographical note

Publisher Copyright:

NREL Publication Number

  • NREL/JA-5900-81018


  • 2D perovskite
  • energy transfer
  • metal halide perovskite
  • perovskites
  • solar-photochemistry
  • triplet energy transfer
  • triplet sensitization


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