Journal
APPLIED PHYSICS LETTERS
Volume 85, Issue 12, Pages 2396-2398Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1796530
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We report C-60 thin-film transistor characteristics of top-contact structure with low work-function source and drain electrodes. The electron mobility of the Mg electrode device is one order of magnitude higher than that of the Ag electrode device. The depth profile obtained by using secondary-ion mass spectroscopy demonstrates that Mg atoms strongly diffuse into C-60 film during Mg deposition. These findings indicate that the improved mobility is due to the reduction of the parasitic resistance under source and drain electrodes by the Mg doping effect. (C) 2004 American Institute of Physics.
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