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Europium-doped yttrium silicate nanophosphors prepared by flame synthesis |
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| Authors: | Xiao Qin Yiguang Ju Nan Yao |
| Affiliation: | a Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, United States b Department of Chemistry, Princeton University, Princeton, NJ 08544, United States c Princeton Institute for the Science and Technology of Materials, Princeton University, Princeton, NJ 08544, United States |
| Abstract: | Europium-doped yttrium silicate (Y2SiO5:Eu3+) nanophosphors were successfully synthesized by flame spray pyrolysis method. The effect of silicon concentration on the crystal structure and morphology of the Y2SiO5:Eu3+ phosphors were investigated. As-prepared phosphor consists of spherical nanoparticles with filled morphology, high crystallinity, narrow size distribution, and intense photoluminescence. The crystal structure and photoluminescence intensity of Y2SiO5:Eu3+ nanophosphors are strongly affected by the ratio of silicon to yttrium in the precursor solution, and the maximum photoluminescence intensity is obtained from particles prepared from the silicon to yttrium ratio of 1.25. A concentration quenching limit is observed at 30 mol% Eu of yttrium. The photoluminescence intensity also increases with the increase of the concentration of precursor solution. This work demonstrates the advantages of flame spray pyrolysis method for the preparation of multi-component nanophosphor, which can be found potential application in lamp and display industries. |
| Keywords: | A. Inorganic compounds C. X-ray diffraction D. Crystal structure D. Optical properties |
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