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

Title data

Barea, Eva M. ; Garcia-Belmonte, Germà ; Sommer, Michael ; Hüttner, Sven ; Bolink, Henk J. ; Thelakkat, Mukundan:
Determination of charge carrier mobility of hole transporting polytriarylamine-based diodes.
In: Thin Solid Films. Vol. 518 (2010) Issue 12 . - pp. 3351-3354.
ISSN 0040-6090
DOI: https://doi.org/10.1016/j.tsf.2009.10.003

Project information

Abstract in another language

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 ~ 10− 8 and 10− 6 cm2 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.