Towards single electron transistor-based photon detection with microplasma-enabled graphene quantum dots

Single-electron transistors (SETs) represent a new generation of electronic devices with high charge sensitivity, switching speed, and low power consumption. Here simple controlled fabrication graphene quantum dot (GQD)-based SETs for photon detectors has been demonstrated. The plasma-synthesized GQDs exhibit stable photoluminescence are successfully used as the Coulomb islands between heteroepitaxial spherical-gold/platinum (HS-Au/Pt) nanogap electrodes. as-fabricated GQD-SETs enable detection 410 nm excitation owing to ability generate emission.