Sonochemical synthesis of lanthanide ions doped CeF3 nanoparticles: potential materials for solid state lighting devices.
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.
Dutta
Dimple P
DP
Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
Warrier
S
S
Ghildayal
R
R
Sharma
G
G
Grover
G
G
Tyagi
A K
AK