Nonexponential hole burning in organic glasses

R. Jankowiak, R. Richert, H. Bässler

Research output: Contribution to journalArticlepeer-review

85 Scopus citations

Abstract

The time evolution of nonphotochemical holes in the absorption profile of tetracene doped into amorphous layers of 2,3-dimethylanthracene and 9,10-diphenylanthracene has been investigated and compared with literature results on tetracene in an alcohol glass. The kinetics can be described in terms of a dispersive first-order reaction of noninteracting reaction centers assuming that site relaxation is a tunnel process, the tunnel parameter λ being subject to a Gaussian distribution. Data for hole burning rates have been evaluated via model fits. Successful application of the concept to analysis of literature data for the recovery of photochemical holes suggests that a Gaussian distribution function for the rate-controlling parameter is superior to the conventionally constant distribution function with cutoff condition.

Original languageEnglish (US)
Pages (from-to)4569-4574
Number of pages6
JournalJournal of physical chemistry
Volume89
Issue number21
StatePublished - Dec 1 1985
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry

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