Journal
APPLIED PHYSICS LETTERS
Volume 90, Issue 10, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2711393
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Very high-mobility organic transistors are fabricated with purified rubrene single crystals and high-density organosilane self-assembled monolayers. The interface with minimized surface levels allows carriers to distribute deep into the crystals by more than a few molecular layers under weak gate electric fields, so that the inner channel plays a significant part in the transfer performance. With the in-crystal carriers less affected by scattering mechanisms at the interface, the maximum transistor mobility reaches 18 cm(2)/V s and the contact-free intrinsic mobility turned out to be 40 cm(2)/V s as the result of four-terminal measurement. These are the highest values ever reported for organic transistors. (c) 2007 American Institute of Physics.
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