The third-order nonlinear optical properties of a side-chain conjugated polythiophene film

被引：4
|
作者：
Gao Chao [1 ,2 ]
Xiao Qi [1 ]
Qiu Shao-Jun [1 ]
Hou Chao-Qi [2 ]
Xu Pei-Pei [1 ]
Liu Jian-Qun [1 ]
机构：
[1] Xian Modern Chem Res Inst, Xian 710065, Peoples R China
[2] Chinese Acad Sci, State Key Lab Transient Opt & Photon, Xian Inst Opt & Precis Mech, Xian 710119, Peoples R China
来源：
ACTA PHYSICA SINICA | 2009年 / 58卷 / 05期
基金：
中国国家自然科学基金;
关键词：
polythiophene derivative; side-chain conjugated polymers; third order nonlinear optical susceptibility; nonlinear optical refractive index; PHOTOVOLTAIC PROPERTIES; POLYMER;
D O I：
10.7498/aps.58.3578
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A novel side-chain conjugated polythiophene-derivative poly[3-(5'-octyl-thienylene-vinyl)-thiophene] (POTVTh) was synthesized. The polymer films showed a broad absorption band and a narrow bandgap of about 1.82 eV. The third order nonlinear optical properties of the film were measured by Z-scan technique at 800 nm, which showed the nonlinear absoption coefficient, the nonlinear optical refractive index and third order nonlinear optical susceptibility as 5.63 x 10(-7) cm/W, -6. 38 x 10(-11) cm(2)/W and 4.32 x 10(-9) esu, respectively. The results are one to two orders of magnitude larger than those of normal conjugated polymers without conjugated side-chain, indicating the good nordinear optical properties of the polymer.
引用
收藏
页码：3578 / 3583
页数：6
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