Premium
High‐Performance Single Crystal Organic Field‐Effect Transistors Based on Two Dithiophene‐Tetrathiafulvalene (DT‐TTF) Polymorphs
Author(s) -
Pfattner Raphael,
MasTorrent Marta,
Bilotti Ivano,
Brillante Aldo,
Milita Silvia,
Liscio Fabiola,
Biscarini Fabio,
Marszalek Tomasz,
Ulanski Jacek,
Nosal Andrzej,
GazickiLipman Maciej,
Leufgen Michael,
Schmidt Georg,
Molenkamp Laurens W.,
Laukhin Vladimir,
Veciana Jaume,
Rovira Concepció
Publication year - 2010
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201001446
Subject(s) - tetrathiafulvalene , materials science , organic field effect transistor , stacking , raman spectroscopy , crystal (programming language) , transistor , polymorphism (computer science) , single crystal , crystallography , molecule , field effect transistor , electron mobility , diffraction , charge carrier , optoelectronics , organic chemistry , chemistry , optics , computer science , voltage , physics , biochemistry , quantum mechanics , genotype , programming language , gene
Solution prepared single crystal organic field‐effect transistors (OFETs) combine low‐cost with high performance due to structural ordering of molecules. However, in organic crystals polymorphism is a known phenomenon, which can have a crucial influence on charge transport. Here, the performance of solution‐prepared single crystal OFETs based on two different polymorphs of dithiophene‐tetrathiafulvalene, which were investigated by confocal Raman spectroscopy and X‐ray diffraction, are reported. OFET devices prepared using different configurations show that both polymorphs exhibited excellent device performance, although the α‐phase revealed charge carrier mobility between two and ten times higher in accordance to the closer stacking of the molecules.