title: White-Light-Emitting Carbon Dots Prepared by the Electrochemical Exfoliation of Graphite.
abstract: The single-step synthesis of white-light-emitting carbon dots (CDs) through a green, facile and cheap electrochemical route by using graphite rods as the carbon source is reported. Under UV excitation, the aqueous dispersion of as-synthesised CDs exhibit broad-band emission, which covers a significant fraction of the visible spectrum, owing to the heterogeneity in particle size and surface functional groups. The CDs were further explored for their potential as UV-to-visible colour convertors under remote-phosphor technology by capping a λ=365 nm UV light-emitting diode (LED) chip with CD-loaded poly(methyl methacrylate) to obtain the following colour parameters: Commission Internationale de l'Eclairage chromaticity coordinates (0.35, 0.37), colour rendering index (88) and correlated colour temperature (4802 K).
authors.affiliation: Department of Physics, National Institute of Technology Calicut (NITC), Kerala-, 673601, India.
authors.forename: Julin
authors.initials: J
authors.lastname: Joseph
authors.affiliation: Department of Physics, National Institute of Technology Calicut (NITC), Kerala-, 673601, India.
authors.forename: Aji A
authors.identifier: http://orcid.org/0000-0001-7129-4307
authors.initials: AA
authors.lastname: Anappara
keywords: carbon; electrochemistry; fluorescence; quantum dots; white-light emission