Photoconductive properties of PVK-based photorefractive polymer composites doped with fluorinated styrene chromophores

被引：70

作者：

Hendrickx, E ^{[1
]}

Zhang, YD ^{[1
]}

Ferrio, KB ^{[1
]}

Herlocker, JA ^{[1
]}

Anderson, J ^{[1
]}

Armstrong, NR ^{[1
]}

Mash, EA ^{[1
]}

Persoons, AP ^{[1
]}

Peyghambarian, N ^{[1
]}

Kippelen, B ^{[1
]}

机构：

[1] Univ Arizona, Ctr Opt Sci, Tucson, AZ 85721 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1999年 / 9卷 / 09期

关键词：

D O I：

10.1039/a902745i

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：

We have synthesized nine anisotropic chromophores, with different degrees of fluorination, and studied the effect of the chromophore's ionization potential on charge-transfer complexation, photoconductivity, and response time in photorefractive polymer mixtures based on poly(vinylcarbazole). (2,4,7-Trinitrofluoren-9-ylidene)malononitrile (TNFDM) or C-60 provided the sensitization. We have found evidence of strong complexation between TNFDM and the chromophore. At high electric fields, the photoconductivity decays during illumination and reaches a limiting value that correlates with the chromophore's ionization potential. A buildup of C-60(-) radical anions is observed simultaneously. The strong decline in photoconductivity correlates with an increase in the photorefractive grating buildup time.

引用

页码：2251 / 2258

页数：8

共 16 条

[1] ANODIC OXIDATION PATHWAYS OF CARBAZOLES .1. CARBAZOLE AND N-SUBSTITUTED DERIVATIVES [J].