Organic complementary oscillators with stage-delays below 1 μs

Bode, Dieter; Myny, Kris; Verreet, Bregt; van der Putten, Bas; Bakalov, Petar; Steudel, Soeren; Smout, Steve; Vicca, Peter; Genoe, Jan; Heremans, Paul
March 2010
Applied Physics Letters;3/29/2010, Vol. 96 Issue 13, p133307
Academic Journal
Recently, complex circuits of organic thin-film transistors have been shown. The use of complementary logic can significantly ease the design of large integrated circuits. However, the performance of complementary logic in organic thin-film technology has not been able to equivale that of unipolar logic, due to the difficulty to densely integrate and simultaneously optimize p-type and n-type transistors on a single substrate. Here, we develop an optimized complementary process for C60 n-type and pentacene p-type transistors, both having bottom-gate bottom-contact geometry. Using this complementary technology, we show ring-oscillators with a stage-delay below 1 μs at a supply-voltage of 20 V.


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