Synthesis and Modification of Graphene Quantum Dots as UV to Visible Photon Convertor
Paper ID : 1263-ICNS
Authors:
seyd ali sabetghadam *
Department of nano electronic engineering,faculty of advanced Technologies shiraz,Iran
Abstract:
In this study, photoluminescent graphene quantum dots (GQD) were prepared via a facile one step hydrothermal process. The effect of hydrothermal conditions on the photoluminescence (PL) intensity is investigated. Maximum PL intensity observed for the GQDs synthesized under hydrothermal conditions of 200C temperature and 24 hours. The GQDs then used as UV to visible photon converter on top of a mc-Si solar cell. A 34% increase in short circuit current density of the solar cell is observed under the illumination of UV light.Photo luminescent graphene quantum dots (GQD) have received enormous attention because of their unique chemical, electronic and optical properties[1]. Here a series of n-doped GQDs were synthesized under hydrothermal process in different time and temperature for the reason that we have various PL peaks in several wavelengths in that different conditions.
It has shown, PL spectrum have changed at different time and temperature. we found maximum PL peaks under condition of 24hours and 200C temperature for optoelectronic application and devices we deposited GQD on silicon solar cell by using spin coating.
Keywords:
Graphene Quantum Dots; Hydrothermal; Photoluminescence; Spectral Conversion.
Status : Abstract Accepted (Poster Presentation)