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• W2299391043 abstract "Graphene is a single layer of honeycomb patterned carbon atoms. It has attracted much of interest in the past decade due to its excellent electronic, optical, and mechanical properties, etc., and shows broad application prospects in the future. Sometimes the properties of graphene need to be modulated to adapt for specific applications. For example, control of doping level provides a good way to modulate the electrical and magnetic properties of graphene, which is important to the design of graphene-based memory and logic devices. Also, the ability to tune the electrical conductance can be used to fabricate graphene transistor, and the chemical vapor deposition (CVD) method shows the possibility to make the preparation of graphene integrated into semiconductor manufacture processes. Moreover, the sensitivity of graphene to the H2O and O2 molecules when exposed to the air ambient will result in weak spin signal and noise background. Irradiation provides a clean method to modulate the electrical properties of graphene which does not involve chemical treatment. By ion or electron irradiation, the electronic band structure of graphene can be tuned and the lattice structure will be modulated as well. Moreover, the charged impurities and doping arising from irradiation can change the electronic properties of graphene such as electron-phonon scattering, mean free path and carrier density. As reported, graphene oxidization can be induced by exposure to oxygen plasma, and N-Doping of Graphene through thermal annealing in ammonia has been demonstrated. Furthermore, the strain in graphene can also be tailored by irradiation, which also contributes to the modification of transport properties of graphene. In conclusion, irradiation provides an efficient physical method to modulate the structural and transport properties of graphene, which can be applied in the graphene-based memory and logic devices, transistor, and integrated circuits (ICs). In this thesis, Helium ion irradiation was performed on graphene grown on SiO2 substrate by CVD method, and the structural and transport properties were investigated. The charge transfer doping in graphene induced by irradiation results in a modification of these properties, which suggests a convenient method to tailor them. Moreover, electron beam irradiation was performed on graphene grown on SiC substrate. The local progressive amorphization, strain and electron doping contribute to the modification of structural and transport properties in graphene which can be observed." @default.
• W2299391043 created "2016-06-24" @default.
• W2299391043 creator A5005627612 @default.
• W2299391043 date "2015-05-26" @default.
• W2299391043 modified "2023-09-25" @default.
• W2299391043 title "The influence of irradiation on structural and transport properties of graphene" @default.
• W2299391043 hasPublicationYear "2015" @default.
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