Optical properties of films built up by polar molecules

Saulius Jursenas, A. Gruodis, G. Kodis, Leonas Valkunas, I. Kaulach, Edgar A. Silinsh

Research output: Contribution to journalConference articlepeer-review

6 Scopus citations

Abstract

The origin of the excited states and the spectroscopic features of polar molecular films and crystals of N,N- dimethylaminobenzylidene 1,3-indandione (DMABI) was considered. The formation of charge transfer exciton states in the absorption and luminescence spectra by increase of the thicknesses of DMABI films was observed. The evidence of a strong exciton-phonon interaction and its effects on the exciton absorption and luminescence spectra was discovered. The coexistence of free and self-trapped excitons at elevated temperatures was found in DMABI films. The dynamics of both shallow short-lived and deeply trapped long-lived self-trapped exciton states in various films and crystal of DMABI was discussed.

Original languageEnglish (US)
Pages (from-to)24-33
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume2968
DOIs
StatePublished - Dec 1 1997
Externally publishedYes
EventOptical Organic and Semiconductor Inorganic Materials - Riga, Latvia
Duration: Aug 26 1996Aug 26 1996

Keywords

  • Charge transfer
  • Luminescence
  • Molecular crystals
  • N,N-dimethylaminobenzylidene 1,3-indandione
  • Self-trapped excitons
  • Spectroscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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