Influence of the liquid carbazole concentration on charge trapping in C60 sensitized photorefractive polymers

Jean Charles Maurice Ribierre, T. Aoyama, T. Kobayashi, T. Sassa, T. Muto, T. Wada

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

We study by two-beam coupling experiments the photorefractive properties of a poly (N vinylcarbazole) (PVK) matrix plasticized with different concentrations of 9-(2-ethylhexyl)carbazole (EHCz), so-called liquid carbazole, and doped with the photosensitizer C60 and the electro-optic push-pull chromophore 4-piperidinobenzylidene malonitrile. The steady state and dynamic photorefractive performances of these materials are optimized by tuning the concentration ratio between PVK and EHCz. In parallel, the trap density values are determined by a spectroscopic method based on the strong absorption of the C60- anion in the near infrared region and are compared with those obtained from the photorefractive measurements. The results obtained from both techniques are in good agreement and show the important role played by the liquid carbazole in the charge trapping processes and the photorefractive properties of C60 sensitized photorefractive polymers.

Original languageEnglish
Article number033106
JournalJournal of Applied Physics
Volume102
Issue number3
DOIs
Publication statusPublished - Aug 24 2007

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carbazoles
trapping
polymers
liquids
chromophores
electro-optics
tuning
traps
anions
matrices

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Influence of the liquid carbazole concentration on charge trapping in C60 sensitized photorefractive polymers. / Ribierre, Jean Charles Maurice; Aoyama, T.; Kobayashi, T.; Sassa, T.; Muto, T.; Wada, T.

In: Journal of Applied Physics, Vol. 102, No. 3, 033106, 24.08.2007.

Research output: Contribution to journalArticle

Ribierre, Jean Charles Maurice ; Aoyama, T. ; Kobayashi, T. ; Sassa, T. ; Muto, T. ; Wada, T. / Influence of the liquid carbazole concentration on charge trapping in C60 sensitized photorefractive polymers. In: Journal of Applied Physics. 2007 ; Vol. 102, No. 3.
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