Combustion synthesis and enhanced 1.5 μm emission in Y2O3:Er3+ powders codoped with La3+ ions
来源期刊：JOURNAL OF RARE EARTHS2016年第2期
论文作者：雷若姗 王焕平 徐时清 田颖 杨清华
文章页码：125 - 129
摘 要：Er3+ and La3+ codoped Y2O3 nanocrystalline powders were synthesized by gel combustion method and characterized with thermal analysis, X-ray diffraction（XRD）, transmission electron microscopy（TEM）, high-resolution TEM（HRTEM） techniques and fluorescence spectroscopy. After being calcined at 1200 oC, the(Y1–x Lax)2O3:Er3+ powders were confirmed to be cubic Y2O3 phase with the crystalline grain size in the range of 20–40 nm. The Er3+ emission at 1.53 μm from the 4I13/2→4I15/2 transition was observed, which was found to be enhanced by introducing La3+ ions. Such enhancement could be attributed to the adjustment of Er3+ ions’ local environment by the codoping of La3+ ions, leading to the increased ground state absorption cross section of Er3+ ions.
雷若姗，王焕平，徐时清，田颖，杨清华
College of Materials Science and Engineering, China Jiliang University
摘 要：Er3+ and La3+ codoped Y2O3 nanocrystalline powders were synthesized by gel combustion method and characterized with thermal analysis, X-ray diffraction（XRD）, transmission electron microscopy（TEM）, high-resolution TEM（HRTEM） techniques and fluorescence spectroscopy. After being calcined at 1200 oC, the(Y1–x Lax)2O3:Er3+ powders were confirmed to be cubic Y2O3 phase with the crystalline grain size in the range of 20–40 nm. The Er3+ emission at 1.53 μm from the 4I13/2→4I15/2 transition was observed, which was found to be enhanced by introducing La3+ ions. Such enhancement could be attributed to the adjustment of Er3+ ions’ local environment by the codoping of La3+ ions, leading to the increased ground state absorption cross section of Er3+ ions.
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