Effect of intermolecular interactions on charge and exciplex formation in high-performance organic semiconductors

Whitney E.B. Shepherd, Andrew D. Platt, Garrett Banton, David Hofer, Marsha A. Loth, John E. Anthony, Oksana Ostroverkhova

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations


We present optical, photoluminescent (PL), and photoconductive properties of functionalized anthradithiophene (ADT) derivatives and their composites. Solution-deposited ADT films exhibit charge carrier mobilities of over 1.5 cm2/(Vs), high PL quantum yields, and high photoconductivity. We show that molecular arrangement and intermolecular interactions significantly contribute to (opto)electronic properties of guest-host thin films of these pi-stacked materials. Specifically, the formation of aggregates plays an important role in establishing efficient conduction pathways in ADT derivatives dispersed in a host matrix. In addition, the extent and nature of aggregation and the resulting changes in PL and photoconductive behavior can be effectively manipulated through different film fabrications techniques. Furthermore, energy transfer and exciplex formation has been shown to occur between two different ADT derivatives, which also alters the photoconductive response of the systems. We explore the dependence of the photoconductive response of such guest-host systems on excitation wavelength.

Original languageEnglish
Title of host publicationOrganic Photonic Materials and Devices XIII
StatePublished - 2011
EventOrganic Photonic Materials and Devices XIII - San Francisco, CA, United States
Duration: Jan 24 2011Jan 26 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceOrganic Photonic Materials and Devices XIII
Country/TerritoryUnited States
CitySan Francisco, CA


  • Aggregation
  • Exciplex
  • Organic Semiconductors
  • Photoconductivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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