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

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

Research output: Research - peer-reviewArticle

  • 185 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.

LanguageEnglish (US)
Pages1233-1236
Number of pages4
JournalAdvanced Materials
Volume22
Issue number11
DOIs
StatePublished - Mar 19 2010
Externally publishedYes

Profile

Semiconducting organic compounds
Crystalline materials
LDS 751
Excitons
Quantum yield
Fluorescence
Single crystals
Crystals
3,4,9,10-perylenetetracarboxylic dianhydride

ASJC Scopus subject areas

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

Cite this

Relationship between crystalline order and exciton diffusion length in molecular organic semiconductors. / Lunt, Richard R.; Benziger, Jay B.; Forrest, Stephen R.

In: Advanced Materials, Vol. 22, No. 11, 19.03.2010, p. 1233-1236.

Research output: Research - peer-reviewArticle

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