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We report the synthesis and characterization of a novel donor-acceptor semiconducting polymer bearing naphthobisthiadiazole (NTz), a doubly benzothiadiazole (BTz)-fused ring, and its applications to organic field-effect transistors and bulk heterojunction solar cells. With NTz's highly π-extended structure and strong electron affinity, the NTz-based polymer(More)
Organic thin-fi lm transistors (OTFTs) have attracted great interest for their potential use in several electronic applications, including active-matrix displays, electronic paper, and chemical sensors. [ 1 ] Among the many semiconducting materials evaluated in the TFT confi guration, pentacene is the best as it shows the highest fi eld-effect mobility ( >(More)
We describe a new synthetic route to the [1]benzothieno[3,2-b][1]benzothiophene (BTBT) substructure featuring two consecutive thiophene-annulation reactions from o-ethynyl-thioanisole substrates and arylsulfenyl chloride reagents that can be easily derived from arylthiols. The method is particularly suitable for the synthesis of unsymmetrical derivatives,(More)
Ultra-thin silicon oxide (SiO<sub>2</sub>) insulating films have been obtained by rapid thermal oxidation (RTO) and annealing (RTA), using different temperatures of 600, 700, 800 and 960degC for 40s, in oxygen and nitrogen, respectively. Characterization by Ellipsometry (for fixed refractive index of 1.46), transmission electron microscopy (TEM), Fourier(More)
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