Journal article
Field-Effect Mobility and Morphology Study in Amorphous Films of Symmetric and Unsymmetric Spiro-Linked Compounds



Publication Details
Authors:
Saragi, T.; Pudzich, R.; Fuhrmann, T.; Salbeck, J.
Publication year:
2002
Journal:
MRS Online Proceedings Library
Pages range:
89
Volume number:
725
ISSN:
1946-4274

Abstract
We have investigated the field-effect mobility of three kinds of low molecular weight spirolinkedcompounds, namely 2,2',7,7'-tetrakis (diphenylamino)-9,9'-spirobifluorene (spiro-TAD),2,2',7,7'-tetrakis(biphenyl-4-yl)-9,9'-spirobifluorene (spiro-6F) and 2,7-bis-(N,N-diphenylamino)-2',7'-bis-(biphenyl-4-yl)-9,9'-spirobifluorene (spiro-X2). The field-effect mobilities ofthese materials in the saturation region are 8 ´ 10-4 cm2V-1s-1, 5 ´ 10-5 cm2V-1s-1 and4 ´ 10-4 cm2V-1s-1 respectively. The atomic force microscopy images show that films preparedfrom these materials are amorphous with a very smooth surface and the limited field-effectmobility is due to the intrinsic behaviour of amorphous materials.

Last updated on 2019-25-07 at 15:42