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Synthesis and Photoluminescent Properties of Li2SrSiO4:Pb2+
被引:13
|作者:
Erdogmus, E.
[1
]
Pekgozlu, I.
[1
]
Korkmaz, E.
[2
]
Basak, A. S.
[3
]
机构:
[1] Bartin Univ, TR-74100 Bartin, Turkey
[2] Bozok Univ, Yozgat, Turkey
[3] Marmara Univ, Istanbul, Turkey
关键词:
silicate phosphors;
luminescence;
X-ray powder diffraction;
LUMINESCENCE PROPERTIES;
EMITTING PHOSPHOR;
ENERGY-TRANSFER;
PB2+;
EU2+;
IONS;
CE3+;
D O I:
10.1007/s10812-014-9933-6
中图分类号:
O433 [光谱学];
学科分类号:
0703 ;
070302 ;
摘要:
Pure and Pb2+ doped Li2SrSiO4 materials were synthesized at 900A degrees C for 12 h in air. The phases of the synthesized materials were determined by X-ray powder diffraction (XRD). The photoluminescence properties of the synthesized phosphors were investigated by spectrofl uorometry at room temperature. The emission and excitation bands of Li2SrSiO4:Pb2+ were observed at 381 and 271 nm, respectively. The dependence of the emission intensity on Pb2+ concentration for Li(2)Sr(1-x)PbxSiO(4) was studied in detail. It was observed that the optimum concentration of Pb2+ in Li2SrSiO4 is 0.01 mol.%. The Stokes shifts of Li2SrSiO4:Pb2+ phosphor was calculated to be 10653 cm(-1).
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页码:336 / 340
页数:5
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