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  • 卫威,毛家珊,姜斌,陈永虎,尹民.Eu2+ , Dy3+共掺 CaxSr2-xSiO4:硅酸盐固溶体发光性质探究[J].低温物理学报,2019,(1):21-27.    [点击复制]
  • WEI Wei,MAO Jiashan,JIANG Bin,CHEN Yonghu,YIN Min.Structural and Luminescent Spectroscopic Properties of Solid-solution Phosphor CaxSr2-xSiO4: Eu2+ , Dy3+[J].LOW TEMPERATURE PHYSICAL LETTERS,2019,(1):21-27.   [点击复制]
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Eu2+ , Dy3+共掺 CaxSr2-xSiO4:硅酸盐固溶体发光性质探究
卫威, 毛家珊, 姜斌, 陈永虎, 尹民
0
(强耦合量子材料物理重点实验室,中国科学技术大学物理学院,安徽合肥230026)
摘要:
稀土发光材料和固溶体发光材料受到人们的广泛关注,稀土固溶体发光材料本身的结构特性在一定程度上能够影响和决定它的发光特性,而发光特性又直接关系到材料的性能和使用前景.因此,本论文的主要工作时通过改变固溶体发光材料CaxSr2-xSiO4: 0.01Eu2+ , 0.01Dy3+固溶离子Ca和Sr的比例浓度来实现对固溶体发光材料基质结构的调节,测得了不同固溶比例下的样品的激发光谱和部分发射光谱以及热释光谱,并对这些实验结果进行分析.
关键词:  发光材料,固溶体,稀土离子,结构性质,发光特性
DOI:
基金项目:
Structural and Luminescent Spectroscopic Properties of Solid-solution Phosphor CaxSr2-xSiO4: Eu2+ , Dy3+
WEI Wei, MAO Jiashan, JIANG Bin, CHEN Yonghu, YIN Min
(Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Science, School of Physical Sciences, University of Science and Technology of China,Hefei 230026,China)
Abstract:
A series of divalent europium(Eu2+) ions and trivalent dysprosium(Dy3+) ions co-doped solid-solution CaxSr2-xSiO4(x=0, 0.2, 0.4, 0.6, 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0) phosphors were synthesized by solid-state reaction and their luminescent spectroscopic properties were investigated. Photoluminescence emission spectra of CaxSr2-xSiO4: 0.01Eu2+, 0.01Dy3+ phosphor was changed by increasing the proportion of Ca2+ions. Two emission bands originated from the 5d-4f transition of Eu2+ ion occupying two different cation sites in the CaxSr2-xSiO4 host lattice were observed under ultraviolet excitation when x≥1.2. The red-shift of emission peaks with different Ca2+ and Sr2+ concentrations was observed when 0
Key words:  luminescent materials,solid-solution,rate-earth ions,lunminescent properties

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