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1. 大连海事大学 物理系, 辽宁 大连 116026
2. 大连海事大学 交通运输装备与海洋工程学院,辽宁 大连,116026
纸质出版日期:2014-12-3,
收稿日期:2014-8-4,
修回日期:2014-9-13,
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王轶卓, 张艳秋, 林成新等. KLa(MoO<sub>4</sub>)<sub>2</sub>:Sm<sup>3+</sup>红色荧光粉的温度特性[J]. 发光学报, 2014,35(12): 1416-1421
WANG Yi-zhuo, ZHANG Yan-qiu, LIN Cheng-xin etc. Temperature Dependence of Red-emitting KLa(MoO<sub>4</sub>)<sub>2</sub>:Sm<sup>3+</sup> Phosphor[J]. Chinese Journal of Luminescence, 2014,35(12): 1416-1421
王轶卓, 张艳秋, 林成新等. KLa(MoO<sub>4</sub>)<sub>2</sub>:Sm<sup>3+</sup>红色荧光粉的温度特性[J]. 发光学报, 2014,35(12): 1416-1421 DOI: 10.3788/fgxb20143512.1416.
WANG Yi-zhuo, ZHANG Yan-qiu, LIN Cheng-xin etc. Temperature Dependence of Red-emitting KLa(MoO<sub>4</sub>)<sub>2</sub>:Sm<sup>3+</sup> Phosphor[J]. Chinese Journal of Luminescence, 2014,35(12): 1416-1421 DOI: 10.3788/fgxb20143512.1416.
采用高温固相法制备了KLa(MoO
4
)
2
:Sm
3+
红色荧光粉
利用X射线衍射对晶体结构进行表征
发现不同浓度Sm
3+
掺杂的样品均为单斜相结构.测量了样品的激发和发射光谱
观察到样品在紫外区及可见蓝绿区均有强的激发带
在404 nm激发下存在4个发射峰.测量了不同温度下样品的发射光谱和荧光衰减曲线
对样品的荧光温度猝灭进行了分析
确定了样品发光的温度猝灭是由横向穿越所导致的
采用Arrhennius模型对实验数据进行拟合
确定激活能约为0.48 eV
表明荧光粉具有良好的热稳定性.
KLa(MoO
4
)
2
:Sm
3+
phosphors were prepared
via
high temperature solid state reaction. The crystal structure of the products was characterized
via
XRD technique
and it was found that all the obtained samples with various Sm
3+
concentrations exhibited monoclinic phase. The excitation and emission spectra for the samples were measured
and broad excitation bands in ultraviolet and blue-greenish region were observed
meanwhile four emission peaks were detected when the samples were excited at 404 nm. The emission spectra and fluorescence decays at various temperatures were measured
and the mechanism for fluorescence temperature quenching was analyzed. Furthermore
the crossover process was confirmed to be responsible for the temperature quenching. Finally
Arrhennius equation was used to fit the experimental data and the activation energy was derived to be 0.48 eV. This result implies the excellent luminescent thermal stability of the studied phosphors.
KLa(MoO4)2:Sm3+红色荧光粉温度猝灭横向穿越
KLa(MoO4)2:Sm3+red phosphortemperature quenchingcrossover
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