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Carbon Nanotube Light Emissions

How the solid-state light emitter works

High resolution images

IBM scientists simultaneously inject positive and negative charges into a carbon nanotube through the source and drain electrodes at its two ends.
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When the electrons and holes meet in the nanotube, they neutralize each other and generate light.
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When the electrons and holes meet in the nanotube, they neutralize each other and generate light.
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See also:

·	2003-05-01: IBM Scientists Create World's Smallest Solid-state Light Emitter