Orientation of pentacene films using surface alignment layers and its influence on thin-film transistor characteristics

Authors
Swiggers, ML Xia, G Slinker, JD Gorodetsky, AA Malliaras, GG Headrick, RL Weslowski, BT Shashidhar, RN Dulcey, CS
Citation
Ml. Swiggers et al., Orientation of pentacene films using surface alignment layers and its influence on thin-film transistor characteristics, APPL PHYS L, 79(9), 2001, pp. 1300-1302
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951 → ACNP
Volume
79
Issue
9
Year of publication
2001
Pages
1300 - 1302
Database
ISI
SICI code
0003-6951(20010827)79:9<1300:OOPFUS>2.0.ZU;2-E
Abstract
We have investigated the effect of surface order on the orientation and mob ility of pentacene. The surface order was created using monolayers and poly mers that are normally used to align liquid crystals. Rubbed polyvinylalcoh ol layers were found to align approximately 27% of the pentacene grains wit hin a 30 degrees range. When introduced in a thin-film transistor, they wer e found to enhance the saturation current by a factor of 2.5. A mechanism f or this enhancement is proposed. (C) 2001 American Institute of Physics.