Influence of device geometry in the electrical behavior of all organic ambipolar field effect transistors
COSSEDDU, PIERO;BONFIGLIO, ANNALISA
2010-01-01
Abstract
Microcontact printing has been used for realizing all organic, highly flexible, ambipolar field effect transistors based on a pentacene-C60 heterojunction. The contacts were patterned using poly(ethylenedioxythiophene): poly(styrenesulfonate) as conductive polymer. We have compared three different device architectures, bottom contact, top contact, and middle contact, and demonstrated in the last case that a perfect balance between n- and p-type mobilities may be obtained, being source ad drain directly interfaced with both semiconductors. This led to a significant improvement of the electrical performances, which, in turn, allowed the realization of all organic complementary inverters.File | Size | Format | |
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