Single-Electron Transport and Detection of Graphene Quantum Dots

Author:

Li Xinxing12ORCID,Sui Jinggao3,Fang Jingyue1

Affiliation:

1. School of Physics and Electronics, Central South University, Changsha 410083, China

2. Key Laboratory of Nanodevices, Suzhou Institute of Nano-Tech and Nano-Bionics, CAS, Suzhou 215213, China

3. National Innovation Institute of Defense Technology, Academy of Military Sciences PLA China, Beijing 100071, China

Abstract

The integrated structure of graphene single-electron transistor and nanostrip electrometer was prepared using the semiconductor fabrication process. Through the electrical performance test of the large sample number, qualified devices were selected from low-yield samples, which exhibited an obvious Coulomb blockade effect. The results show that the device can deplete the electrons in the quantum dot structure at low temperatures, thus, accurately controlling the number of electrons captured by the quantum dot. At the same time, the nanostrip electrometer coupled with the quantum dot can be used to detect the quantum dot signal, that is, the change in the number of electrons in the quantum dot, because of its quantized conductivity characteristics.

Funder

Natural Science Foundation of Hunan Province

Publisher

MDPI AG

Subject

General Materials Science,General Chemical Engineering

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