Effect of sintering temperature on the luminescence properties of Ca0.8Ba0.2TiO3:Pr3+ red‐emitting phosphor |
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| Authors: | Yannan Mu Min Qiu Xiaoming Zhou Qian Li Meiling Sun Haibin Yang Wuyou Fu Lihua Yang Jinwen Ma |
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| Affiliation: | 1. State Key Laboratory of Superhard Materials, Jilin University, Changchun, People's Republic of China;2. Department of Physics and Chemistry, Heihe University, Heihe, People's Republic of China;3. Department of Physics, Beihua University, Jilin, People's Republic of China |
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| Abstract: | Nanoparticles with the nominal composition Ca0.8Ba0.2Ti03:Pr3+ were prepared using the sol–gel process. Barium nitrate, 4‐hydrated calcium nitrate and praseodymium oxide were used as raw materials. The structural evolution and decomposition processes of the precursors were investigated by powder X‐ray diffraction, differential thermal analysis and thermogravimetric analysis. Crystalline Ca0.8Ba0.2Ti03:Pr3+ could be obtained at 700°C. The photoluminescence properties of the samples were investigated using excitation and emission spectra. Ca0.8Ba0.2Ti03:Pr3+ nanoparticles showed strong red emission, which could be assigned to the typical 1D2→3H4 transition of Pr3+. Furthermore, the study found that sintering temperature and the introduction of Ba2+ influence the decay time of persistent luminescence. Copyright © 2014 John Wiley & Sons, Ltd. |
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| Keywords: | luminescence sol– gel preparation rare earth nanoparticle |
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