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

Pei-Chun Yeh; Genki Ohkatsu; Ryo Toyama; Phan Trong Tue; Kostya Ken Ostrikov; Yutaka Majima; Wei-Hung Chiang

doi:10.1088/1361-6528/ac2845

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

Nanotechnology. 2021 Oct 6;32(50). doi: 10.1088/1361-6528/ac2845.

Authors

Pei-Chun Yeh¹, Genki Ohkatsu², Ryo Toyama², Phan Trong Tue², Kostya Ken Ostrikov³, Yutaka Majima², Wei-Hung Chiang¹

Affiliations

¹ Department of Chemical Engineering, National Taiwan University of Science Technology, Taipei 10607, Taiwan.
² Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503, Japan.
³ School of Chemistry and Physics and QUT Centre for Materials Science, Queensland University of Technology (QUT), Brisbane, QLD, 4000, Australia.

PMID: 34544073
DOI: 10.1088/1361-6528/ac2845

Abstract

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

Keywords: graphene quantum dots; photon detection; plasmas; synthesis; transistor.