The efficiency and time-dependence of luminescence from poly (p-phenylene vinylene) and derivatives

I. D W Samuel, B. Crystall, Gary Rumbles, P. L. Burn, A. B. Holmes, R. H. Friend

Research output: Contribution to journalArticle

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Abstract

We report measurements of the quantum efficiency and time decay of photoluminescence in the conjugated polymers poly (p-phenylenevinylene) (PPV) and poly (2-methoxy, 5- (2′ethyl-hexyloxy)-p-phenylenevinylene ) (MEH-PPV). MEH-PPV is soluble and we measure values for the quantum yield for luminescence of order 35% for dilute solutions in toluene and chloroform. By comparison of luminescence decay rates in solution and in solid films we estimate luminescence efficiencies in solid films, which can be as high as 50% in partially conjugated PPV. Decay time distribution analysis of the luminescence reveals a broad distribution of decay rates, and this is consistent with the distribution of conjugation lengths known to be present in these materials Exciton migration in better conjugated material results in narrower distributions of emitting chromophores.

Original languageEnglish
Pages (from-to)472-478
Number of pages7
JournalChemical Physics Letters
Volume213
Issue number5-6
DOIs
Publication statusPublished - Oct 15 1993

Fingerprint

time dependence
Luminescence
luminescence
Derivatives
decay rates
Conjugated polymers
Toluene
decay
Quantum yield
Chromophores
Chloroform
chloroform
conjugation
Quantum efficiency
chromophores
toluene
quantum efficiency
Photoluminescence
excitons
photoluminescence

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces

Cite this

The efficiency and time-dependence of luminescence from poly (p-phenylene vinylene) and derivatives. / Samuel, I. D W; Crystall, B.; Rumbles, Gary; Burn, P. L.; Holmes, A. B.; Friend, R. H.

In: Chemical Physics Letters, Vol. 213, No. 5-6, 15.10.1993, p. 472-478.

Research output: Contribution to journalArticle

Samuel, I. D W ; Crystall, B. ; Rumbles, Gary ; Burn, P. L. ; Holmes, A. B. ; Friend, R. H. / The efficiency and time-dependence of luminescence from poly (p-phenylene vinylene) and derivatives. In: Chemical Physics Letters. 1993 ; Vol. 213, No. 5-6. pp. 472-478.
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