Relationship between crystalline order and exciton diffusion length in molecular organic semiconductors

Richard R. Lunt, Jay Burton Benziger, Stephen R. Forrest

Research output: Contribution to journalArticle

247 Scopus citations

Abstract

The effect of crystalline order on the exciton diffusion length (L D) is shown for the archetypal organic semiconductor 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA; see figure). LD increases from ∼6.5 nm in the amorphous limit to ∼2S nm for single crystals. These changes in diffusion length are connected to changes in the fluorescence quantum yield, which is useful for understanding where crystal-size-dependant diffusion trends are likely to be observed for other organic materials.

Original languageEnglish (US)
Pages (from-to)1233-1236
Number of pages4
JournalAdvanced Materials
Volume22
Issue number11
DOIs
StatePublished - Mar 19 2010

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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