期刊
ORGANIC ELECTRONICS
卷 10, 期 5, 页码 815-821出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.orgel.2009.04.002
关键词
Self-patterning; SAMs; Surface energy; Organic thin film transistors
资金
- Ministry of Economic Affairs [8351A11410]
- National Science Council [NSC972218-E-009-005]
We have developed a technique for the preparation of thin film transistors (TFTs) through the self-patterning of various organic and inorganic materials via solution processing using a wide range of solvents. To obtain selectively self-patterned layers, we treated the oxide dielectric with two-phase patterned self-assembled monolayers of hexamethyldisilazane (HMDS) and octyltrichlorosilane. The conducting polymer poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonic acid) in water and the dielectric polymer poly(vinyl phenol) in propylene glycol methyl ether acetate were both selectively deposited and patterned on the HMDS regions with high-quality feature shapes. When source and drain electrodes were patterned on the bottom-gate oxide wafer, we also self-patterned organic and inorganic semiconductors around the channel (HMDS) regions. These TFT devices exhibited moderate to good electronic characteristics. This method has great potential for the economical full solution processing of large-area electronic devices. The selectivity in the patterning phenomena can be understood in terms of surface energy interactions. (C) 2009 Elsevier B.V. All rights reserved.
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