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J. Korean Ceram. Soc. > Volume 49(4); 2012 > Article
Journal of the Korean Ceramic Society 2012;49(4): 325.
doi: https://doi.org/10.4191/kcers.2012.49.4.325
Luminescent Properties of Europium-Doped Lanthanum Silicon Nitride Phosphor
Zoltan Lences, Monika Hrabalova, Adriana Czimerova, Pavol Sajgalik, You Zhou1, Kiyoshi Hirao1
Institute of Inorganic Chemistry, Slovak Academy of Sciences
1National Institute of Advanced Industrial Science & Technology (AIST)
Europium-doped $LaSi_3N_5$ phosphor was synthesized from LaSi/Si/$Si_3N_4/Eu_2O_3$ mixture by nitridation at $1390^{circ}C$ and additional annealing at $1650^{circ}C$ for 4 h. The phosphor shows emissions in the green light region with a maximum at 560 nm. With increasing europium content in the general formula $La_{1-z}Eu_zSi_3N_{5-z}O_{1.5z}$ from z = 0.01 to 0.06 there was a maximum emission for z = 0.04 followed by concentration quenching for the highest europium content (z = 0.06).
Key words: Lanthanum silicon nitride, Nitridation, Luminescence, Phosphor, Europium
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