Low-voltage pentacene transistor inverters using micro-contact printed nano-layer

We report on low-voltage inverters with two pentacene-based thin-film transistors (TFTs), one of which has been fabricated on a dielectric surface selected by micro-contact printing (kCP). When a self-assembled monolayer (SAM) of 7-octenyltrichlorosilane (7-OTS) was printed on AIO(x) dielectric oxid...

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Published inJournal of materials chemistry Vol. 20; no. 4; pp. 663 - 665
Main Authors Lee, Kwang H., Oh, Min Suk, Lee, Byoung H., Sung, Myung M., Im, Seongil
Format Journal Article
LanguageEnglish
Published 01.01.2010
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Summary:We report on low-voltage inverters with two pentacene-based thin-film transistors (TFTs), one of which has been fabricated on a dielectric surface selected by micro-contact printing (kCP). When a self-assembled monolayer (SAM) of 7-octenyltrichlorosilane (7-OTS) was printed on AIO(x) dielectric oxide, the TFT with the kCP-SAM displayed a large threshold voltage (V(th)) shift (3 V shift under -5 V operation), increased device current, and clearly changed pentacene surface morphology as compared to those of the other TFT without kCP-SAM. Those results are attributed to the 7-OTS-modified pentacene/AlO(x) interface. Our inverter, composed of two TFTs with and without kCP-SAM, shows a high gain of 650 at a supply voltage (V(DD)) of -20 V.
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ISSN:0959-9428
1364-5501
DOI:10.1039/B922675C