TITLE

A polymer gate dielectric for high-mobility polymer thin-film transistors and solvent effects

AUTHOR(S)
Park, Joonhyung; Park, S. Young; Shim, Sang-Oak; Kang, Hyewon; Lee, Hong H.
PUB. DATE
October 2004
SOURCE
Applied Physics Letters;10/11/2004, Vol. 85 Issue 15, p3283
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A polymer gate dielectric of poly(2-hydroxyethyl methacrylate) is introduced to the polymer thin-film transistor (TFT) with poly(3-hexylthiophene) as its active layer. With this polymer dielectric, the field-effect mobility is 0.1 cm2 V-1 s-1. The solvent used in forming the active layer on the polymer dielectric film has pronounced effects on the device performance. These solvent effects are related to the roughness of the dielectric surface a solvent can induce. The solvent that induces the least roughness is found to be the most desirable for better device performance. The roughness can in turn be related to solubility parameter.
ACCESSION #
14909440

 

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