Ultra-low voltage, self-aligned OTFTs for frequency applications

LAI, STEFANO;Cosseddu P;Gazzadi G. C;MARTINES, GIOVANNI;Bonfiglio A;BARBARO, MASSIMO

2013-01-01

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Abstract

A novel structure for Organic Thin-Film Transistor (OTFT) is here presented. The devices are fabricated using a one-mask, photolithographic self-alignment technique which can be performed with standard photoresists and without further chemical treatments. This technique, combined with a novel technology for the realization of low voltage OTFTs, allows a dramatic reduction of the parasitic capacitances thus leading to a remarkable cut-off frequency. In this paper, the main electrical parameters of low voltage, self-aligned devices are reported, and a complete frequency characterization of the devices is given. These characteristics make the reported approach suitable for the development of basic circuitries for frequency applications.