Journal
ORGANIC ELECTRONICS
Volume 9, Issue 5, Pages 711-720Publisher
ELSEVIER
DOI: 10.1016/j.orgel.2008.05.003
Keywords
organic gate insulator; polyimide; pentacene thin-film transistor; hybridization
Funding
- Korean Ministry of Science and Technology
Ask authors/readers for more resources
We have synthesized a novel fully soluble and low-temperature processable polyimide gate insulator (KSPI) through the one-step condensation polymerization of the monomers 5-(2,5-dioxytetrahydrofuryl)-3-methyl-3-cyclohexene-1,2-dicarboxylic anhydride and 4,4-diaminodiphenylmethane. Fully imidized KSPI was found to be completely soluble in organic solvents such as N-methyl-2-pyrrolidone (NMP), dimethylacetamide (DMAc), gamma-butyrolactone, dimethylsulfoxide (DMSO), and 2-butoxyethanol. Thin films of KSPI can be fabricated at only 150 degrees C and a pentacene OTFT with KSPI as a gate dielectric was found to exhibit a field effect mobility of 0.22 cm(2)/V s. To obtain a high performance organic thin-film transistor (OTFT), the KSPI surface was modified in our new technique by hybridization with a non-polar side chain containing a polyimide insulator (PI). The carrier mobility of a pentacene OTFT with a hybridized polyimide gate insulator (BPI-3) was found to be 0.92 cm(2)/V S. Our new low-temperature processable polyimides show promise as gate dielectrics for OTFTs. (C) 2008 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available