Optical properties of films built up by polar molecules

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

Research output: Contribution to journalConference article

6 Citations (Scopus)

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

Fingerprint

Exciton
Excitons
Optical Properties
Optical properties
excitons
Molecules
optical properties
Luminescence
molecules
Crystal
Absorption
luminescence
absorption spectra
Crystals
Charge Transfer
Excited States
Phonon
Excited states
Coexistence
crystals

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

Cite this

Optical properties of films built up by polar molecules. / Jursenas, Saulius; Gruodis, A.; Kodis, Gerdenis; Valkunas, Leonas; Kaulach, I.; Silinsh, Edgar A.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 2968, 01.12.1997, p. 24-33.

Research output: Contribution to journalConference article

Jursenas, Saulius ; Gruodis, A. ; Kodis, Gerdenis ; Valkunas, Leonas ; Kaulach, I. ; Silinsh, Edgar A. / Optical properties of films built up by polar molecules. In: Proceedings of SPIE - The International Society for Optical Engineering. 1997 ; Vol. 2968. pp. 24-33.
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AU - Silinsh, Edgar A.

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