title: Solvent-dispersed benzothiadiazole-tetrathiafulvalene single-crystal nanowires and their application in field-effect transistors.
abstract: A new organic semiconductor (BT-TTF) based on molecular moieties of benzothiadiazole and tetrathiafulvalene was designed and synthesized, and its structure, molecular packing and charge-transporting properties were determined. Thermal properties, electrochemical behaviors, and optical absorption of this molecule were studied by using differential scanning calorimetry/thermal gravimetric analysis, cyclic voltammetry, and ultraviolet-visible spectroscopy, respectively. Its bulk and nanowire single crystals were prepared and characterized by X-ray crystallography, scanning electron microscopy, transmission electron microscopy, and field-effect transistors. It is found that short intermolecular S···S (3.41 Å), S···C (3.49 Å), and S···N (3.05 Å) contacts define the solid-state structure of BT-TTF single crystals which π-stack along the [100] with interplanar distances of 3.49 Å. Solvent-cast single-crystal nanowire transistors showed mobilities as large as 0.36 cm2/(V s) with current on/off ratios of 1×10(6). This study further illustrates the impact of molecular design and a demonstration of high-performance single-crystal nanowire transistors from the resulting semiconductor.
authors.affiliation: Department of Chemistry, University of Washington, Seattle, Washington 98195, United States.
authors.forename: Neil M
authors.initials: NM
authors.lastname: Tucker
authors.forename: Alejandro L
authors.initials: AL
authors.lastname: Briseno
authors.forename: Orb
authors.initials: O
authors.lastname: Acton
authors.forename: Hin-Lap
authors.initials: HL
authors.lastname: Yip
authors.forename: Hong
authors.initials: H
authors.lastname: Ma
authors.forename: Samson A
authors.initials: SA
authors.lastname: Jenekhe
authors.forename: Younan
authors.initials: Y
authors.lastname: Xia
authors.forename: Alex K-Y
authors.initials: AK
authors.lastname: Jen