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1. 长春工业大学 化学工程学院, 吉林 长春 130012
2. 长春工业大学 材料科学高等研究院, 吉林 长春 130012
3. 长春工业大学 化学与生命科学学院, 吉林 长春 130012
4. 长春工业大学 基础科学学院, 吉林 长春 130012
纸质出版日期:2017-3-5,
收稿日期:2016-9-3,
修回日期:2016-10-9,
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谢婉莹, 安西涛, 酒俊霞等. Gd<sup>3+</sup>掺杂浓度对NaErF<sub>4</sub>:Yb纳米晶上转换荧光性能的影响[J]. 发光学报, 2017,38(3): 281-287
XIE Wan-ying, AN Xi-tao, JIU Jun-xia etc. Influence of Gd<sup>3+</sup> Doping on The Luminescence Properties of Upconverting NaErF<sub>4</sub>: Yb Nanocrystals[J]. Chinese Journal of Luminescence, 2017,38(3): 281-287
谢婉莹, 安西涛, 酒俊霞等. Gd<sup>3+</sup>掺杂浓度对NaErF<sub>4</sub>:Yb纳米晶上转换荧光性能的影响[J]. 发光学报, 2017,38(3): 281-287 DOI: 10.3788/fgxb20173803.0281.
XIE Wan-ying, AN Xi-tao, JIU Jun-xia etc. Influence of Gd<sup>3+</sup> Doping on The Luminescence Properties of Upconverting NaErF<sub>4</sub>: Yb Nanocrystals[J]. Chinese Journal of Luminescence, 2017,38(3): 281-287 DOI: 10.3788/fgxb20173803.0281.
采用温和的溶剂热法制备较强红光发射的NaErF
4
:Yb,Gd上转换纳米晶,控制Gd
3+
的掺杂浓度实现了晶相和尺寸可控以及上转换荧光的增强。X射线衍射谱(XRD)、透射电子显微镜图像(TEM)和上转换发射光谱结果分析表明,Gd
3+
掺杂可以有效地促进NaErF
4
纳米晶的晶相由立方相向六角相转变,并且减小纳米粒子的尺寸。随着Gd
3+
掺杂浓度的上升,上转换荧光强度明显增大。当Gd
3+
摩尔分数为25%时,样品的上转换荧光强度达到最大。同时,研究了在980 nm近红外激光激发下,Yb
3+
与Er
3+
间有效的能量传递以及上转换发光机制。
Upconversion NaErF
4
:Yb
Gd nanocrystals with bright red emissions were prepared
via
a facile solvothermal method. The crystalline phase
size and the relative intensity of upconversion luminescence can be simultaneously manipulated by adjusting Gd
3+
ions contents. The introduction of Gd
3+
can effectively promote the cubic to hexagonal phase transformation
size reduction and obviously upconversion luminescence (UCL) intensity improvement of NaErF
4
:Yb
Gd nanocrystals. XRD
TEM and UCL spectra results reveal that the sample co-doped with 25% Gd
3+
ions (mole fraction) of NaErF
4
:Yb system exhibits the optimized structural and optical properties. Meanwhile
the mechanism involving upconverting photon excitation and energy transfer between Yb
3+
ions and Er
3+
ions were investigated under the excitation of 980 nm diode laser.
NaErF4Gd3+共掺杂上转换发光
NaErF4Gd3+ dopingupconversion luminescence
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