Carrier dynamics in α-octithiophene solids: comparison of the transient photoconductivity and excited-state absorption in single-crystal and polycrystalline film

D. Moses, J. Wang, A. Dogariu

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

We demonstrate that the transient photoconductivity, photoluminescence, and excited-state absorption (PA) in single-crystal α-octithiophene (8T) are radically different from those in 8T-oriented polycrystalline film. These observations suggest that structural disorder in the 8T system introduces sub-band-gap energy levels that reduce the photocurrent lifetime, facilitate radiative transitions in the near-IR region, and enhance PA.

Original languageEnglish (US)
Pages (from-to)7715-7718
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume59
Issue number11
DOIs
StatePublished - 1999

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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