Remarkable enhancement of hole transport in top-gated N-type polymer field-effect transistors by a high-k dielectric for ambipolar electronic circuits.

Baeg, Kang-Jun; Khim, Dongyoon; Jung, Soon-Won; Kang, Minji; You, In-Kyu; Kim, Dong-Yu; Facchetti, Antonio; Noh, Yong-Young · Adv Mater · 2012

basic_science · Level V

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Abstract

A remarkable enhancement of p-channel properties is achieved in initially n-channel dominant ambipolar P(NDI2OD-T2) organic field-effect transistors (OFETs) by the use of the fluorinated high-k dielectric P(VDF-TrFE). An almost two orders of magnitude increase in hole mobility (~0.11 cm(2) V(-1) s(-1) ) originates from a strong interface modification at the semiconductor/dielectric interface, which provides high-performance complementary-like inverters and ring oscillator circuits.

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