Abstract
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 (μCP). When a self-assembled monolayer (SAM) of 7-octenyltrichlorosilane (7-OTS) was printed on AlOx dielectric oxide, the TFT with the μCP-SAM displayed a large threshold voltage (Vth) 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 μCP-SAM. Those results are attributed to the 7-OTS-modified pentacene/AlOx interface. Our inverter, composed of two TFTs with and without μCP-SAM, shows a high gain of ∼50 at a supply voltage (VDD) of -20 V.
Original language | English |
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Pages (from-to) | 663-665 |
Number of pages | 3 |
Journal | Journal of Materials Chemistry |
Volume | 20 |
Issue number | 4 |
DOIs | |
State | Published - 2010 |