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Negative differential resistance with graphene channels, interfacing distributed quantum dots in Field-Effect Transistors

Field effect transistors with channels made of graphene layer(s) were explored. The graphene layer(s) contacted a distributed array of well-separated semiconductor quantum dots (QDs). The dots were embedded in nano-structured hole-array; each filled hole was occupied by one dot. Differential optical and electrical conductance was observed. Since Negative Differential Resistance (NDR) is key to high-speed elements, such construction may open the door for new electro-photonic devices.

preprint2013arXivOpen access

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