Abstract
Graphene quantum dots (GQDs) have remarkably demonstrated themselves as an efficient non-toxic material whose optoelectronic characteristics could be suitably tailored by molecular engineering. In present work, the properties of GQDs have been modified by creating pores in between them and then passivating them with H, F, and O atoms particularly finding their applications in the Ultraviolet (UV) region. For these purposes, materials having an emission wavelength in the UVA region are desirable. It has been investigated that these pores significantly altered the bandgap of GQDs which in turn affected their optical properties. Transitions contributing to the highest peaks in absorption and photoluminescence spectra have been identified and their isosurface contour-maps have also been plotted to find out the nature of this transition. Emission-wavelengths of these holey GQDs have been discovered to fall in the desirable UVA range, which is perfectly suitable for their usage in UV A lamps, medical phototherapy.
Published Version
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