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Orientation of pentacene films using surface alignment layers and its influence on thin-film transistor characteristics
Authors
,
CS Dulcey
+8 more
AA Gorodetsky
RL Headrick
GG Malliaras
RN Shashidhar
JD Slinker
ML Swiggers
BT Weslowski
G Xia
Publication date
27 August 2001
Publisher
Abstract
We have investigated the effect of surface order on the orientation and mobility of pentacene. The surface order was created using monolayers and polymers that are normally used to align liquid crystals. Rubbed polyvinylalcohol layers were found to align approximately 27% of the pentacene grains within a 30° range. When introduced in a thin-film transistor, they were found to enhance the saturation current by a factor of 2.5. A mechanism for this enhancement is proposed. © 2001 American Institute of Physics
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CUED - Cambridge University Engineering Department
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Last time updated on 15/07/2020