The effect of ionization potential and film morphology on exciplex formation and charge generation in blends of polyfluorene polymers and silole derivatives

Clare Dyer-Smith, Jessica J. Benson-Smith, Donal D.C. Bradley, Hideyuki Murata, William J. Mitchell, Sean E. Shaheen, Saif A. Haque, Jenny Nelson

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Long-lived emission from an exciplex state is observed in a series of blend films of polyfluorene-triarylamine copolymers with silole derivatives. The energy of the exciplex emission is found to correlate with the energy offset between the frontier orbitals of donor and acceptor, whereas the yield of the exciplex is more strongly influenced by blend film morphology. Charge separation occurs in these films, and the external quantum efficiency of photovoltaic devices is found to depend upon both the energetics and the morphology of the blend film. © 2009 American Chemical Society.
Original languageEnglish (US)
JournalJournal of Physical Chemistry C
Volume113
Issue number32
DOIs
StatePublished - Aug 13 2009
Externally publishedYes

Fingerprint Dive into the research topics of 'The effect of ionization potential and film morphology on exciplex formation and charge generation in blends of polyfluorene polymers and silole derivatives'. Together they form a unique fingerprint.

Cite this