One-Step Synthesis of Luminescent Nanoparticles of Complex Oxide, Strontium Aluminate |
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| Authors: | Chengzhou Li Yusuke Imai Yoshio Adachi Hiroshi Yamada Keiko Nishikubo Chao-Nan Xu |
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| Affiliation: | On-Site Sensing and Diagnosis Research Laboratory, National Institute of Advanced Industrial Science and Technology, Saga 841-0052, Japan |
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| Abstract: | An organic aqueous solution of metal acetylacetonate precursors was subjected to spray pyrolysis in order to fabricate SrAl2O4:Eu (SAO) nanoparticles. Non-agglomerated luminescent SAO nanoparticles, having a spherical shape with a size of 10–30 nm, were achieved in a single step, while only submicrometer-sized SAO particles were obtained from the conventional ultrasonic pyrolysis of the metal nitrates. Without any post-annealing process, the as-prepared SAO nanoparticles were observed to exhibit a strong photoluminescence, which is comparable with that of the submicrometer-sized SAO particles. A mechanism for the formation of the nanoparticles is also discussed. |
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