Optical studies of distyrylbenzene single crystals

被引：22

作者：

Wu, CC ^{[1
]}

Korovyanko, OJ

Delong, MC

Vardeny, ZV

Ferraris, JP

机构：

[1] Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA

[2] Univ Texas, Dept Chem, Richardson, TX 75083 USA

来源：

SYNTHETIC METALS | 2003年 / 139卷 / 03期

关键词：

single crystals; organic semiconductors; photoluminescence;

D O I：

10.1016/S0379-6779(03)00263-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The optical properties of high quality single crystals of distyrylbenzene (DSB) have been studied. At room temperature the photoluminescence (PL) spectrum is quite broad with quantum yield of 65%. At low temperature the PL spectrum shows many narrow vibrational side bands with QE of 68%, where the 0-0 band shows different polarization properties from the other phonon bands. We used the Spano 'pinwheel' model of strong vibration-exciton coupling in herringbone lattice to explain the appearance of the 'forbidden' 0-0 transition at low temperature and its unusual polarization properties. This model also predicts a strong temperature dependence for the 0-0 band relative to the 0-n transitions, as verified experimentally. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：735 / 738

页数：4

共 11 条

[1] Synthesis and optical properties of oligo- and poly(2,5-dialkoxy-1,4-para-phenylenevinylene)s [J].