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1. 长春工业大学 化学与生命科学学院,吉林 长春,130012
2. 长春工业大学 材料科学与工程学院,吉林 长春,130012
纸质出版日期:2018-8-5,
网络出版日期:2018-2-1,
收稿日期:2017-12-11,
修回日期:2018-1-22,
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王雪, 兰民, 杨怡舟等. Cu<sup>2+</sup>离子共掺杂的&beta;-NaYF<sub>4</sub>:Yb<sup>3+</sup>,Er<sup>3+</sup>晶体的制备与上转换发光性能的提高[J]. 发光学报, 2018,39(8): 1082-1086
WANG Xue, LAN Min, YANG Yi-zhou etc. Synthesis and Enhanced Upconversion Optical Properties of Cu<sup>2+</sup> Ion Doped &beta;-NaYF<sub>4</sub>:Yb<sup>3+</sup>,Er<sup>3+</sup> Crystals[J]. Chinese Journal of Luminescence, 2018,39(8): 1082-1086
王雪, 兰民, 杨怡舟等. Cu<sup>2+</sup>离子共掺杂的&beta;-NaYF<sub>4</sub>:Yb<sup>3+</sup>,Er<sup>3+</sup>晶体的制备与上转换发光性能的提高[J]. 发光学报, 2018,39(8): 1082-1086 DOI: 10.3788/fgxb20183908.1082.
WANG Xue, LAN Min, YANG Yi-zhou etc. Synthesis and Enhanced Upconversion Optical Properties of Cu<sup>2+</sup> Ion Doped &beta;-NaYF<sub>4</sub>:Yb<sup>3+</sup>,Er<sup>3+</sup> Crystals[J]. Chinese Journal of Luminescence, 2018,39(8): 1082-1086 DOI: 10.3788/fgxb20183908.1082.
采用水热法制备Cu
2+
离子共掺杂的-NaYF
4
:20% Yb
3+
,2% Er
3+
上转换晶体。通过X射线衍射(XRD)及透射电子显微镜(TEM)数据分析,Cu
2+
离子的掺杂不影响样品的晶相与形貌。通过荧光光谱观察到,随着Cu
2+
离子的掺杂摩尔分数从0增加到40%,紫外到可见的上转换发光强度先增大再减小。在掺杂5% Cu
2+
离子时,-NaYF
4
:20% Yb
3+
,2% Er
3+
晶体呈现出最大的上转换发光强度。这是因为低价态的Cu
2+
离子掺杂导致F
-
空位的产生,降低了Er
3+
离子周围晶体场的对称性,从而有利于上转换发光的增强。
-NaYF
4
:20%Yb
3+
2%Er
3+
upconversion crystals co-doped with Cu
2
+
ion were prepared by a solvothermal method. X-ray diffraction(XRD) and transmission electron microscopy(TEM) analysis demonstrated that the phase and morphology of the samples did not change significantly with increasing Cu
2+
ion doping concentration. The upconversion emission intensities in the UV/violet and visible regions increased at first and then decreased with the increase of the dopant concentrations of Cu
2
+
ion from 0 to 40%. The -NaYF
4
:Yb
3+
Er
3+
microcrystals co-doped with 5% Cu
2+
ion exhibited the maximum upconversion emission intensity. It may be attributed to the substitution of Y
3+
ion by low-valence Cu
2+
ion
which may generate F
-
vacancies. It decreased the crystal symmetry around the Er
3+
ion
and favored the improvement of the upconversion luminescence.
&beta-NaYF4上转换Cu2+离子掺杂
&beta-NaYF4upconversionCu2+iondoping
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