Synthesis and luminescence behavior of Eu-doped CaF2 nanoparticles |
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Authors: | Feng Wang Daibo Pi |
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Institution: | a Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China b State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, People's Republic of China |
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Abstract: | Luminescent Ca1−xF2+x:Eux nanoparticles were synthesized by a chemical co-precipitation method in an ethanol solution. The Ca1−xF2+x:Eux nanoparticles exhibit a sphere-like morphology with particle diameter of about 15-20 nm. With increasing concentration of Eu3+ ion the intensity of XRD diffraction peaks decreased significantly and full width at half-maximum of the peaks increased gradually, which indicated that more Eu3+ ions resulted in the increase of structural defects. The emission spectrum of Ca1−xF2+x:Eux nanoparticles consisted of a few narrow, sharp lines corresponding to Eu3+ ions. The luminescence intensity of Ca1−xF2+x:Eux nanoparticles increased with increasing concentration of Eu3+ ion and reached a maximum at approximately 15 mol%. |
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Keywords: | 61 46 +w 78 55 &minus m |
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