MTL News Archives for 2013

Graphene could yield cheaper optical chips

September 16, 2013

Researchers show that graphene -- atom-thick sheets of carbon -- could be used in photodetectors, devices that translate optical signals to electrical.


In a new graphene-on-silicon photodetector, electrodes (gold) are deposited, slightly asymmetrically, on either side of a silicon waveguide (purple). The asymmetry causes electrons kicked free by incoming light to escape the layer of graphene (hexagons) as an electrical current. Graphic courtesy of the researchers

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