Determination of charge carrier mobility of hole transporting polytriarylamine-based diodes

被引:24
作者
Barea, Eva M. [1 ]
Garcia-Belmonte, Germa [1 ]
Sommer, Michael [2 ]
Huettner, Sven [2 ]
Bolink, Henk J. [3 ]
Thelakkat, Mukundan [2 ]
机构
[1] Univ Jaume 1, Dept Fis, Photovolta & Optoelect Devices Grp, Castellon de La Plana 12071, Spain
[2] Univ Bayreuth, D-95440 Bayreuth, Germany
[3] Univ Valencia, Inst Mol Sci, Valencia 46980, Spain
关键词
Poly(triarylamines); Hole-transporting materials; Mobility; Organic electronics; LIGHT-EMITTING-DIODES; FIELD-EFFECT MOBILITY; SOLAR-CELLS; BLOCK-COPOLYMERS; TRANSIENT; PHOTOCONDUCTIVITY; TEMPERATURE; TRANSISTORS; POLYMERS; ELECTRON;
D O I
10.1016/j.tsf.2009.10.003
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Hole transport properties of three different side chain poly(triarylamines) have been determined by means of the analysis of steady-state current-voltage characteristics using co-planar diode structures. The interpretation is based on space-charge limited models with field-dependent mobility. Mobilities between similar to 10(-8) and 10(-6) cm(2) V-1 s(-1) are obtained. The highest mobility is achieved for poly(tetraphenylbenzidine) devices and the lowest for poly(triphenylamine) devices. Electron-rich methoxy substituents increase the mobility of poly(triphenylamine)s. A comparison of the mobility values with those obtained using organic field-effect transistors is also given. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:3351 / 3354
页数:4
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