title: Sonochemical synthesis of lanthanide ions doped CeF3 nanoparticles: potential materials for solid state lighting devices.
abstract: Nanocrystalline CeF3 and CeF3 doped with Dy3+, Tb3+ and Eu3+ ions have been successfully synthesized via a mild ultrasound assisted route from an aqueous solution of cerium nitrate and potassium borofluoride. The nanoparticles obtained were characterized extensively by techniques like powder X-ray diffraction, transmission electron microscopy and selected area electron diffraction. Their luminescence properties have also been studied. The nanoparticles showed characteristic emission of respective dopants (Dy3+ and Tb3+) when excited at the 4f --> 5d transition of Ce3+. The chromaticity coordinates for these samples were calculated and it was observed that the CeF3 co doped with Dy3+ and Tb3+ gave an emission very close to white light.
authors.affiliation: Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
authors.forename: Dimple P
authors.initials: DP
authors.lastname: Dutta
authors.forename: S
authors.initials: S
authors.lastname: Warrier
authors.forename: R
authors.initials: R
authors.lastname: Ghildayal
authors.forename: G
authors.initials: G
authors.lastname: Sharma
authors.forename: G
authors.initials: G
authors.lastname: Grover
authors.forename: A K
authors.initials: AK
authors.lastname: Tyagi