Synthesis and characterization of graphene quantum dots and their size reduction using swift heavy ion beam
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Date
2018
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Taylor and Francis Inc. 325 Chestnut St, Suite 800 Philadelphia PA 19106
Abstract
Graphene quantum dots (GQDs) are nanosized fragments of graphene displaying quantum confinement effect. They have shown to be prepared from various methods which include ion beam etching of graphene. However, recently the modification of the GQDs has garnered tremendous attention owing to its suitability for various applications. Here, we have studied the effect of swift ion beam irradiation on the properties of GQDs. The ion beam treatment on the GQDs exhibited the change in observed photoluminescence of GQDs as they exhibited a blue luminescence on excitation with longwave UV (?365 nm) due to the reduction in size and removal of the ethoxy (–C–O–C–) groups present on the quantum dots. This was confirmed by transmission electron microscopy, particle size analysis, and Fourier transform infrared spectroscopy. © 2018 Informa UK Limited, trading as Taylor & Francis Group.
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Keywords
Fourier transform infrared spectroscopy, Graphene, Heavy ions, High resolution transmission electron microscopy, Ion bombardment, Nanocrystals, Particle size, Particle size analysis, Photoluminescence, Semiconductor quantum dots, Transmission electron microscopy, Blue luminescence, Ion beam etching, Ion beam irradiation, Ion beam treatment, Quantum confinement effects, Size reductions, Swift heavy ions, Synthesis and characterizations, Ion beams
Citation
Radiation Effects and Defects in Solids, 2018, 173, 46115, pp. 232-238