WANG Ling-li, NI Hai-yong, ZHANG Qiu-hong. Luminescence and Encapsulation Properties of BaSi<sub>2</sub>O<sub>2</sub>N<sub>2</sub> Doped with Divalent Europium[J]. Chinese Journal of Luminescence, 2012,(5): 465-469
WANG Ling-li, NI Hai-yong, ZHANG Qiu-hong. Luminescence and Encapsulation Properties of BaSi<sub>2</sub>O<sub>2</sub>N<sub>2</sub> Doped with Divalent Europium[J]. Chinese Journal of Luminescence, 2012,(5): 465-469 DOI: 10.3788/fgxb20123305.0465.
Luminescence and Encapsulation Properties of BaSi2O2N2 Doped with Divalent Europium
has been prepared by solid state reaction. The prepared BaSi
2
O
2
N
2
∶Eu
2+
phosphors are characterized by X-ray powder diffraction (XRD)
photoluminescence (PL)
etc.
The XRD results show that pure phase phosphors are obtained. The PL results demonstrate that BaSi
2
O
2
N
2
∶Eu
2+
shows high efficient emission with peak at around 492 nm. The best emission can be obtained with the Eu
2+
mole fraction of 4%. The phosphors are encapsulated on the ultraviolet and blue chips
high blue-green luminescence is obtained in both devices
and the CIE parameters are (0.092 0
0.428 2) and (0.112 9
0.223 0)
respectively.
关键词
Keywords
references
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