Synthesis and luminescence properties of SrAl2O4:Eu2+,Dy3+ hollow microspheres via a solvothermal co-precipitation method
来源期刊：JOURNAL OF RARE EARTHS2013年第3期
论文作者：薛志萍 邓苏青 刘应亮 雷炳富 肖勇 郑明涛
文章页码：241 - 246
摘 要：SrAl2O4:Eu2+,Dy3+ hollow microspheres were successfully prepared through a facile and mild solvothermal co-precipitation combining with a postcalcining process.The structure and particle morphology were investigated by X-ray diffraction（XRD）,scanning and transmission electron microscopy（SEM and TEM）pictures,respectively.The mechanism for the formation of spherical SrAl2O4:Eu2+,Dy3+ phosphor was preliminary presented.After being irradiated with ultraviolet（UV）light,the spherical phosphor emitted long-lasting green phosphorescence.Both the photoluminescence（PL）spectra and luminance decay,compared with that of commercial bulky powders,revealed that the phosphors had efficient luminescent and long lasting properties.It was considered that the SrAl2O4:Eu2+,Dy3+ hollow microspheres had promising long-lasting phosphorescence with potential scale-dependent applications in photonic devices.
薛志萍1，邓苏青1，刘应亮2，雷炳富2，肖勇2，郑明涛2
1. Department of Chemistry,Jinan University2. College of Science,South China Agricultural University
摘 要：SrAl2O4:Eu2+,Dy3+ hollow microspheres were successfully prepared through a facile and mild solvothermal co-precipitation combining with a postcalcining process.The structure and particle morphology were investigated by X-ray diffraction（XRD）,scanning and transmission electron microscopy（SEM and TEM）pictures,respectively.The mechanism for the formation of spherical SrAl2O4:Eu2+,Dy3+ phosphor was preliminary presented.After being irradiated with ultraviolet（UV）light,the spherical phosphor emitted long-lasting green phosphorescence.Both the photoluminescence（PL）spectra and luminance decay,compared with that of commercial bulky powders,revealed that the phosphors had efficient luminescent and long lasting properties.It was considered that the SrAl2O4:Eu2+,Dy3+ hollow microspheres had promising long-lasting phosphorescence with potential scale-dependent applications in photonic devices.
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