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Influence of Glass‐Transition Temperature and Chromophore Content on the Steady‐State Performance of Poly( N ‐vinylcarbazole)‐Based Photorefractive Polymers
Author(s) -
Bittner Reinhard,
Däubler Thomas K.,
Neher Dieter,
Meerholz Klaus
Publication year - 1999
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/(sici)1521-4095(199902)11:2<123::aid-adma123>3.0.co;2-r
Subject(s) - materials science , photorefractive effect , chromophore , glass transition , polymer , doping , chemical engineering , transition temperature , polymer chemistry , composite material , photochemistry , optoelectronics , condensed matter physics , chemistry , physics , engineering , superconductivity
In optimizing the performance of organic photorefractive (PR) materials , the glass transition temperature T g is an important factor, according to the investigation reported here. The influence of T g on the steady‐state performance of four series of PR polymer composites at room temperature with chromophore content ρ chr ranging from 20 to 50 wt.‐% has been studied. The performance optimum found for highly doped materials with T g approximately equal to room temperature is demonstrated to be a result of several counteracting effects. Organic PR materials are highly promising for holographic applications.