Re-evaluating the role of sterics and electronic coupling in determining the open-circuit voltage of organic solar cells

Kenneth R. Graham, Patrick Erwin, Dennis Nordlund, Koen Vandewal, Ruipeng Li, Guy O. Ngongang Ndjawa, Eric T. Hoke, Alberto Salleo, Mark E. Thompson, Michael D. McGehee, Aram Amassian

Research output: Contribution to journalArticlepeer-review

93 Scopus citations

Abstract

The effects of sterics and molecular orientation on the open-circuit voltage and absorbance properties of charge-transfer states are explored in model bilayer organic photovoltaics. It is shown that the open-circuit voltage correlates linearly with the charge-transfer state energy and is not significantly influenced by electronic coupling.

Original languageEnglish
Pages (from-to)6076-6082
Number of pages7
JournalAdvanced Materials
Volume25
Issue number42
DOIs
StatePublished - Nov 13 2013

Keywords

  • charge-transfer state
  • electronic coupling
  • open-circuit voltage
  • organic photovoltaic
  • organic solar cell

ASJC Scopus subject areas

  • Materials Science (all)
  • Mechanics of Materials
  • Mechanical Engineering

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