TY - JOUR
T1 - Effect of Eu 3+ concentration on microstructure and photoluminescence of Sr 2SiO 4:Eu 3+ phosphors prepared by microwave assisted sintering
AU - Yang, Ru Yuan
AU - Chen, Huang Yu
AU - Chang, Shoou Jinn
AU - Yang, Yu Kai
N1 - Funding Information:
The authors would like to acknowledge funding support from the Nation Science Council of Taiwan under Grant NSC 99-2622-E-020-008-CC2 , and would also like to acknowledge National Nano Device Laboratories and the Precision Instrument Center of National Pingtung University of Science and Technology for supporting the experimental equipment.
PY - 2012/3
Y1 - 2012/3
N2 - In this paper, effect of Eu 3+ doping concentrations on microstructure and photoluminescence of Sr 2SiO 4 phosphors was investigated. The Sr 2-xSiO 4:xEu 3+ phosphors with x=0.05, 0.1, 0.2, 0.3 were synthesized by microwave assisted sintering at 1200°C for 60 min in air. X-ray powder diffraction analysis confirmed the formation of pure Sr 2SiO 4 phase without second phase or phases of starting materials irrespective of the adding amount of Eu 3+. From scanning electron microscopy image, it is found that with more Eu 3+ ions introduced to Sr 2SiO 4, the shape of the particles is not much different from each other, but the particle size decreases significantly from 1 to 2 μm (when x=0.05) to less than 500 nm (when x=0.3). The emission spectrum was located obviously at 617 nm as the excitation spectrum at λ ex=395 nm, and it had best emission intensity when x=0.1.
AB - In this paper, effect of Eu 3+ doping concentrations on microstructure and photoluminescence of Sr 2SiO 4 phosphors was investigated. The Sr 2-xSiO 4:xEu 3+ phosphors with x=0.05, 0.1, 0.2, 0.3 were synthesized by microwave assisted sintering at 1200°C for 60 min in air. X-ray powder diffraction analysis confirmed the formation of pure Sr 2SiO 4 phase without second phase or phases of starting materials irrespective of the adding amount of Eu 3+. From scanning electron microscopy image, it is found that with more Eu 3+ ions introduced to Sr 2SiO 4, the shape of the particles is not much different from each other, but the particle size decreases significantly from 1 to 2 μm (when x=0.05) to less than 500 nm (when x=0.3). The emission spectrum was located obviously at 617 nm as the excitation spectrum at λ ex=395 nm, and it had best emission intensity when x=0.1.
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U2 - 10.1016/j.jlumin.2011.11.006
DO - 10.1016/j.jlumin.2011.11.006
M3 - Article
AN - SCOPUS:81455161620
SN - 0022-2313
VL - 132
SP - 780
EP - 783
JO - Journal of Luminescence
JF - Journal of Luminescence
IS - 3
ER -