The Role of Driving Energy and Delocalized States for Charge Separation in Organic Semiconductors

Artem A. Bakulin, Akshay Rao, Vlad G. Pavelyev, Paul H. M. van Loosdrecht, Maxim S. Pshenichnikov, Dorota Niedzialek, Jerome Cornil, David Beljonne, Richard H. Friend*, Jérôme Cornil

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

913 Citations (Scopus)
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Abstract

The electron-hole pair created via photon absorption in organic photoconversion systems must overcome the Coulomb attraction to achieve long-range charge separation. We show that this process is facilitated through the formation of excited, delocalized band states. In our experiments on organic photovoltaic cells, these states were accessed for a short time (

Original languageEnglish
Pages (from-to)1340-1344
Number of pages5
JournalScience
Volume335
Issue number6074
DOIs
Publication statusPublished - 16-Mar-2012

Keywords

  • FULLERENE SOLAR-CELLS
  • EXCITON DISSOCIATION
  • CONJUGATED POLYMER
  • PHOTOVOLTAIC CELLS
  • BINDING-ENERGY
  • ACCEPTOR
  • BLENDS
  • HETEROJUNCTIONS
  • EFFICIENT
  • PHOTOGENERATION

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