Wettability control with self-assembler patterning for printed electronics
We investigated the lyophobic/lyophilic patterning method of self-assembled monolayers (SAMs) as gate dielectrics for printable electronics. Lyophobic/lyophilic patterning has been previously shown to damage the substrate surface. Therefore, it is mainly used for electrodes, but not semiconductors....
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Published in | Japanese Journal of Applied Physics Vol. 58; no. 4; pp. 41002 - 41006 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Tokyo
IOP Publishing
01.04.2019
Japanese Journal of Applied Physics |
Subjects | |
Online Access | Get full text |
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Summary: | We investigated the lyophobic/lyophilic patterning method of self-assembled monolayers (SAMs) as gate dielectrics for printable electronics. Lyophobic/lyophilic patterning has been previously shown to damage the substrate surface. Therefore, it is mainly used for electrodes, but not semiconductors. We reduced the damage by partially removing the alkyl chains of the lyophobic SAM with oxygen plasma or vacuum ultraviolet treatment and replacing them with lyophilic molecules. This lyophilic area was formed in a room-temperature process, and we obtained a solution-processed organic transistor with a mobility of 2 × 10−2 cm2 V−1 s−1 at 2.5 V operation. The transistor retained 54% of its mobility without the SAM replacement. By integrating a p-type transistor prepared in the same way, we achieved 2 V operation of an organic inverter and ring oscillator with gain of 30 and oscillation frequency of 3.1 Hz. |
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Bibliography: | JJAP-100118 |
ISSN: | 0021-4922 1347-4065 |
DOI: | 10.7567/1347-4065/ab00e4 |