FAST PHOTOREFRACTIVE EFFECT IN PVK-C-60-DEANST POLYMER COMPOSITE

被引:40
作者
ORCZYK, ME [1 ]
ZIEBA, J [1 ]
PRASAD, PN [1 ]
机构
[1] SUNY BUFFALO,PHOTON RES LAB,BUFFALO,NY 14260
关键词
D O I
10.1021/j100086a019
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The photorefractive effect is observed and described in a polymeric composite consisting of poly [N-vinylcarbazole] charge transporting matrix, fullerene C-60 photosensitizing molecules, and second-order active molecules of (diethylamino)nitrostyrene. The results of photoconductivity, electrooptic modulation, degenerate four-wave mixing, and two-beam coupling experiments are reported. The composite shows relatively high field-dependent electrooptic coefficient and charge carrier photogeneration quantum efficiency. The observed photorefractive diffraction efficiencies compare well with those of well-known inorganic materials. Time-dependent measurements reveal very fast kinetics of light induced phase grating formation and erasure. A possibility of efficient switching of the photorefractive effect with an external electric field is shown.
引用
收藏
页码:8699 / 8704
页数:6
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