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要旨:
Bottom-gate, top-contact (inverted staggered) organic thin-film transistors with a channel length of 1 mu m have been fabricated on flexible plastic substrates using the vacuum-deposited small-molecule semiconductor 2,9-didecyl-dinaphtho[2,3-b:2',3'-f] thieno[3,2-b] thiophene (C-10-DNTT). The transistors have an effective field-effect mobility of 1.2 cm(2)/V s, an on/off ratio of 107, a width-normalized transconductance of 1.2 S/m (with a standard deviation of 6%), and a signal propagation delay (measured in 11-stage ring oscillators) of 420 ns per stage at a supply voltage of 3 V. To our knowledge, this is the first time that megahertz operation has been achieved in flexible organic transistors at supply voltages of less than 10 V. (C) 2013 Elsevier B. V. All rights reserved.
