Journal
APPLIED PHYSICS LETTERS
Volume 91, Issue 26, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2825422
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Stable thin-film transistors (TFTs) with semiconducting indium oxide channel and silicon dioxide gate dielectric were fabricated by reactive ion beam assisted evaporation and plasma-enhanced chemical vapor deposition. The field-effect mobility is 3.3 cm(2)/V s, along with an on/off current ratio of 10(6), and subthreshold slope of 0.5 V/decade. When subject to long-term gate bias stress, the TFTs show fast recovery of the threshold voltage (V-T) when relaxed without annealing, suggesting that charge trapping at the interface and/or in the bulk gate dielectric to be the dominant mechanism underlying V-T instability. Device performance and stability make indium oxide TFTs promising for display applications. (c) 2007 American Institute of Physics.
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