Sensitizing Singlet Fission with Perovskite Nanocrystals

Matthew Beard, Justin Johnson, Haipeng Lu, Xihan Chen, John Anthony

Research output: Contribution to journalArticlepeer-review

76 Scopus Citations

Abstract

The marriage of colloidal semiconductor nanocrystals and functional organic molecules has brought unique opportunities in emerging photonic and optoelectronic applications. Traditional semiconductor nanocrystals have been widely demonstrated to initiate efficient triplet energy transfer at the nanocrystal-acene interface. Herein, we report that unlike conventional semiconductor nanocrystals, lead halide perovskite nanocrystals promote an efficient Dexter-like singlet energy transfer to surface-anchored pentacene molecules rather than triplet energy transfer. Subsequently, molecular pentacene triplets are efficiently generated via singlet fission on the nanocrystal surface. Our demonstrated strategy not only unveils the obscure energy dynamics between perovskite nanocrystal and acenes, but also brings important perspectives of utilizing singlet fission throughout the solar spectrum.

Original languageAmerican English
Pages (from-to)4919-4927
Number of pages9
JournalJournal of the American Chemical Society
Volume141
Issue number12
DOIs
StatePublished - 27 Mar 2019

Bibliographical note

Publisher Copyright:
© 2019 American Chemical Society.

NREL Publication Number

  • NREL/JA-5900-72799

Keywords

  • energy conversion
  • perovskite quantum dots
  • singlet fission
  • solar-photochemistry

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