Separation of fast and slow transport in regiorandom poly(3-hexylthiophene)

被引：15

作者：

Genevicius, K

Österbacka, R

Juska, G

Arlauskas, K

Stubb, H

机构：

[1] Vilnius State Univ, Dept Solid State Elect, LT-2040 Vilnius, Lithuania

[2] Abo Akad Univ, Dept Phys, SF-20500 Turku, Finland

来源：

SYNTHETIC METALS | 2003年 / 137卷 / 1-3期

关键词：

TOF; photo-CELIV; transport; mobility; lifetime; RRaPHY;

D O I：

10.1016/S0379-6779(02)01062-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Transport properties of regiorandom poly(3-hexyl thiophene) (RRaPHT) were investigated using integral mode time-of-flight (TOF) and novel extraction photo current transient (photo-CELIV) methods. Time dependence of the charge carrier mobility was observed. We measured a mobility mu similar to 10(-5) - 10(-6) cm(2)/Vs in long time scales, with the photogenerated carrier lifetime T = 1.5ms. From the initial transport distance we measured the fast mobility-lifetime product mu(f)T(F) = 2 x 10(-11) cm(2)/V, from which we estimated mu(f) similar to 0.2cm(2)/Vs by using the previously reported lifetime of the fast transport as T-f approximate to 100ps [G. Yu, et al.. Phys. Rev. B42, 3004 (1990)]. The time dependence of the charge carrier mobility is obtained over several of magnitude.

引用

页码：1407 / 1408

页数：2

共 4 条

[1] Charge transport in π-conjugated polymers from extraction current transients [J].