Hot-carriers in organic photovoltaics

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Abstract

Photogenerated charge carriers in organic photovoltaics (OPVs) suffer relaxation and recombination losses. However, extracting these carriers at higher energy (‘Hot-carriers’) has been found to be effective to overcome such loss pathways and improve efficiency of OPVs. Excess energy and long delocalization length promotes hot-carrier escape from Coulombic attraction and dissociation into free charges. Here, I have reviewed the ways to generate hot-carriers and their extraction in organic backbones. In-depth understanding of their energetics and dynamics will help designing hot-carrier photovoltaics.
Original languageEnglish
Pages (from-to)223-230
Number of pages8
JournalPure and Applied Chemistry
Volume93
Issue number2
Early online date27 Jan 2021
DOIs
Publication statusPublished - 8 Mar 2021

Keywords

  • Charge-transfer
  • Diamond Jubilee Issue
  • delocalization
  • exciton
  • hot-carriers
  • organic photovoltaics
  • relaxation
  • ultrafast
  • Exciton
  • Hot-carriers
  • Organic photovoltaics
  • Delocalization
  • Relaxation
  • Ultrafast

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