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Photo-Induced Doping Tames Graphene

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Doping graphene with boron nitride may be a way to tame the material, introducing a bandgap and making it useful in electronic devices. However, controlling the electrical properties of graphene boron nitride (GBN) heterostructures has been tricky. Now Lawrence Berkeley National Laboratory researchers have developed a way to tailor GBN’s electrical properties using visible light. Samples must be kept in darkness and are “erased” through uncontrolled exposure to light. The heterostructures are “rewritable,” that is, their properties can be changed again and...Read full article

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    Published: June 2014
    Glossary
    photolithography
    Photolithography is a key process in the manufacturing of semiconductor devices, integrated circuits, and microelectromechanical systems (MEMS). It is a photomechanical process used to transfer geometric patterns from a photomask or reticle to a photosensitive chemical photoresist on a substrate, typically a silicon wafer. The basic steps of photolithography include: Cleaning the substrate: The substrate, often a silicon wafer, is cleaned to remove any contaminants from its surface. ...
    AmericasBerkeleyboron nitrideFeng WanggrapheneLawrence Berkeley National LaboratoryMaterialsOffice of Naval ResearchphotodetectorsphotolithographyphotovoltaicsResearch & TechnologysemiconductorsTech PulseU.S. Department of EnergyUniversity of Californiagraphene boron nitrideGBNmodulation dopingphoto-induced dopingGBN heterostructuresp-n junctions

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