Flexible Low-Voltage Organic Complementary Circuits: Finding the Optimum Combination of Semiconductors and Monolayer Gate Dielectrics

摘要

The organic semiconductor DNTT (dinaphtho-[2,3-b:2',3'-f] thieno[3,2-b]thiophene) and its didecyl- and diphenyl derivatives C_(10)-DNTT and DPh-DNTT have recently demonstrated great potential for the realization of high-performance p-channel thin-film transistors (TFTs), with charge-carrier mobilities close to 10 cm~2/Vs, small parasitic contact resistances and exceptional air stability. In addition, it has been found that the carrier mobility in vacuum-deposited films of these small-molecule thienoacenes is not significantly affected by the substrate roughness, so that TFTs and circuits based on these semiconductors show excellent performance not only when fabricated on smooth silicon or glass substrates, but also when fabricated on much rougher substrates, such as plastic foil, printing paper or banknotes. These novel semiconductors therefore show great promise for the realization of flexible, large-area electronics systems, such as sensor arrays and active-matrix displays.