Optical and electronic properties of functionalized pentacene and anthradithiophene derivatives

Oksana Ostroverkhova, Andrew D. Platt, Whitney E.B. Shepherd, Jonathan Day, John E. Anthony

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

4 Scopus citations


The optical, fluorescent, and photoconductive properties of solution-processable functionalized pentacene and anthradithiophene (ADT) derivatives are presented. Considerable fluorescence quantum yields of ∼ 70-75% and ∼ 40 - 50% were observed in several ADT derivatives in toluene solutions and in thin films, respectively. Using conventional wide-field fluorescence microscopy, ADT derivatives were successfully imaged in the polymethylmethacrylate (PMMA) matrix on a single molecule level, at 532 nm at room temperature. All films exhibited fast charge carrier photogeneration upon 100 fs 400 nm excitation and power-law decay dynamics of the transient photocurrent over many orders of magnitude in time. In solution-deposited ADT thin films, effective charge carrier mobilities calculated from the space-charge-limited currents reached ∼ 0.1 cm2/Vs. In the same films, bulk photoconductive gains of up to 130 were observed at 532 nm continuous wave (cw) excitation with light intensity of 0.58 mW/cm2 at the applied electric field of 4 × 104 V/cm. Effects of metal-organic interfaces on the dark current and transient and cw photocurrent are also discussed.

Original languageEnglish
Title of host publicationLinear and Nonlinear Optics of Organic Materials IX
StatePublished - 2009
EventLinear and Nonlinear Optics of Organic Materials IX - San Diego, CA, United States
Duration: Aug 2 2009Aug 5 2009

Publication series

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


ConferenceLinear and Nonlinear Optics of Organic Materials IX
Country/TerritoryUnited States
CitySan Diego, CA


  • Fluorescence
  • Organic semiconductors
  • Photoconductivity
  • Single-molecule spectroscopy
  • Space-charge-limited current

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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