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Blue emission of Ce3+ in lanthanide silicon oxynitride phosphors

Published online by Cambridge University Press:  31 January 2011

Benjamin Dierre
Advanced Electronic Materials Center, National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan
Rong-Jun Xie*
Nano Ceramics Center, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
Naoto Hirosaki
Nano Ceramics Center, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
T. Sekiguchi
Advanced Electronic Materials Center, National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan
a)Address all correspondence to this author. e-mail:
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Ce3+-activated lanthanide silicon oxynitride (La5Si3O12N, La4SiO7N2, LaSiO2N, and La3Si8O4N11) phosphors were prepared by firing the mixture of La2O3, Si3N4, SiO2, and CeO2 at 1500–1600 °C under a 0.5 MPa nitrogen atmosphere. Diffuse reflection spectrum, photoluminescence spectra, and temperature-dependent luminescence of these phosphors are presented in this work. A blue emission of Ce3+ in all lanthanide silicon oxynitrides was observed under ultraviolet irradiation, which is strongest in La3Si8O4N11:Ce3+. The concentration quenching and thermal quenching of the samples were discussed.

Copyright © Materials Research Society 2007

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