Journal
NANO LETTERS
Volume 4, Issue 5, Pages 911-914Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl0496522
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Homogeneous films of pure single wall carbon nanotubes (SWNTs) sufficiently thin to be optically transparent in the visible range of the spectrum were employed as p-Ohmic contacts on GaN-InGaN quantum-well light-emitting diodes, The specific contact resistance of the SWNT films on the p-GaN was 1.1 x 10(-2) Omega cm(2) after annealing at 700 degreesC for 60 s under N-2, which was a factor of 3 lower than standard Ni/Au contacts on the same p-GaN. The SWNT-contacted LEDs showed bright blue emission centered at 434 nm and demonstrate that the SWNT films provide a new class of electrically conducting, p-type, transparent electrode for use with photonic devices.
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