Graphene Field-Effect Transistors on Undoped Semiconductor Substrates for Radiation Detection


The use of a graphene field-effect transistors (GFETs) to detect radiation is proposed and analyzed. The detection mechanism used in the proposed detector architecture is based on the high sensitivity of graphene to the local change of electric field that can result from the interaction of radiation with a gated undoped semiconductor absorber (substrate) in a GFET. We have modeled a GFET-based radiation detector, and discussed its anticipated performance and potential advantages compared to conventional detector architectures.

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