Photorefractive Performance of Poly[methyl-3-(9-carbazolyl) propylsiloxane] Based Composites Sensitized with Poly(3-hexylthiophene) in a 0.2-1wt % Range

Bulletin of the Korean chemical society

Jin Woo Oh¹  Nakjoong Kim¹ 

关键词: Poly(3-hexylthiophene);    Space charge field;    Refractive index modulation;    PR grating buildup speed;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

In this work, we report on the characterization of six low-T_g poly[methyl-3-(9-carbazolyl) propylsiloxane] based photorefractive (PR) composites sensitized with poly(3-hexylthiophene) (P3HT) in different concentrations, ranging from 0.2 to 1 wt %. At 632.8 nm, photoconductivity, space charge field, refractive index modulation, and grating buildup time were measured versus external electric field. The photoconductivity was strongly dependent on the visible light absorption and mobility. The magnitude of space charge field was affected by the conductivity contrast �?_ph/(�?_ph + �?_d). The refractive index modulation increased with the magnitude of space charge field and the PR grating buildup speed increased with the photoconductivity.

【 授权许可】

Unknown