title: Correlation between crystal structure and mobility in organic field-effect transistors based on single crystals of tetrathiafulvalene derivatives.
abstract: Recently, it was reported that crystals of the organic material dithiophene-tetrathiafulvalene (DT-TTF) have a high field-effect charge carrier mobility of 1.4 cm(2)/(V x s). These crystals were formed by a simple drop-casting method, making this material interesting to investigate for possible applications in low-cost electronics. Here, organic single-crystal field-effect transistors based on materials related to DT-TTF are presented and a clear correlation between the crystal structure and the electrical characteristics is observed. The observed relationship between the mobilities in the different crystal structures is strongly corroborated by calculations of both the molecular reorganization energies and the maximum intermolecular transfer integrals. The most suitable materials described here exhibit mobilities that are among the highest reported for organic field-effect transistors and that are the highest reported for solution-processed materials.
authors.affiliation: Kavli Institute of NanoScience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands. marta@qt.tn.tudelft.nl
authors.forename: Marta
authors.initials: M
authors.lastname: Mas-Torrent
authors.forename: Peter
authors.initials: P
authors.lastname: Hadley
authors.forename: Stefan T
authors.initials: ST
authors.lastname: Bromley
authors.forename: Xavi
authors.initials: X
authors.lastname: Ribas
authors.forename: Judit
authors.initials: J
authors.lastname: Tarrés
authors.forename: Montserrat
authors.initials: M
authors.lastname: Mas
authors.forename: Elies
authors.initials: E
authors.lastname: Molins
authors.forename: Jaume
authors.initials: J
authors.lastname: Veciana
authors.forename: Concepció
authors.initials: C
authors.lastname: Rovira