A strong regioregularity effect in self-organizing conjugated polymer films and high-efficiency polythiophene:fullerene solar cells

Youngkyoo Kim, Steffan Cook, Sachetan M. Tuladhar, Stelios A. Choulis, Jenny Nelson, James R. Durrant, Donal D.C. Bradley, Mark Giles, Iain McCulloch, Chang Sik Ha, Moonhor Ree

Research output: Contribution to journalArticlepeer-review

2139 Scopus citations

Abstract

The influence of polymer regioregularity (RR) on the molecular nanostructure, and on the resulting material properties and device performance was analyzed. Annealed blend films show increased α regardless of RR, that indicates improved charge-carrier diffusion. It was found that the highest device efficiencies will be achieved with the highest RR P3HT. It was also found that the dark-current density of as-fabricated devices made with pristine P3HT increases with the RR of P3HT in the higher voltage regime.
Original languageEnglish (US)
Pages (from-to)197-203
Number of pages7
JournalNature Materials
Volume5
Issue number3
DOIs
StatePublished - Mar 17 2006
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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