Yb-Tm 掺杂钨酸盐纳米晶的制备及发光性能研究

doi:10.16039/j.cnki.cn22-1249.2018.01.013

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摘要实验采用水热法制备了发光性能优越的 Yb³⁺，Tm³⁺掺杂的 BaWO₄ 纳米晶．讨论了不同掺杂比例样
品的发光性能，确定了最佳制备工艺．运用了 X 射线衍射、扫描电镜对制备的样品形貌结构进行了表征，
发现含有稀土离子 Yb³⁺，Tm³⁺掺杂的 BaWO₄ 纳米晶体呈现四方晶系结构，并且粒径低于 100 nm，分散性
较好．使用 980 nm 半导体激光器作光源，并且以 Hitachi F-4500 分光光度计对样品的发射光谱进行了测
量，可以发现: 实验制得的纳米晶的发射峰为 457 nm、478 nm 和 650 nm，各个发射峰分别与 Tm³⁺离子¹D₂→³F₄、
¹G₄→³H₆ 和¹G₄→³F₄ 的跃迁相对应．当 Yb³⁺/Tm³⁺的值为 71，Tm³⁺离子的浓度值为 1.0 mol%时，
样品的发光效果最佳，并且详细讨论了上转换发光机制．

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	苏吉益
	马宏图
	曲铭镭
	施琳

关键词: 水热法上转换纳米晶 BaWO₄

Abstract: In this paper， BaWO₄: Yb³⁺， Tm³⁺ powder with ideal luminescence properties was synthesized by
hydrothermal method．The effects of doping ratios on synthesis were studied．The best preparation process was
determined．The products are characterized by X－ray diffraction and scanning electron microscope．The results
indicate that Yb3⁺-Tm³⁺ co-doped BaWO₄ is tetragonal crystal system，the particle size ranged from 25 to 40 nm
and dispersed uniformly．The spectrum was measured with Hitachi F － 4500 spectrophotometer under 980 nm
diode laser excitation． The results are as follows: The emission peaking of BaWO₄: Yb³⁺， Tm³⁺ nanocrystal
located at 457， 478 and 650 nm corresponding to ¹D₂ →³F₄， ¹G₄ →³H₆ and ¹G₄ →³F₄ transitions of Tm³⁺，
respectively．The results show that the luminous intensity is best when concentration ratio of Yb³⁺ /Tm³⁺ is 7 1，
and the pertinent up-conversion mechanism model of the sample were proposed．

Key words: hydrothermal up-conversion nanocrystal BaWO₄

出版日期: 2018-01-25 发布日期: 2018-01-25 整期出版日期: 2018-01-25

O 422.8

引用本文:

苏吉益, 马宏图, 曲铭镭, 施琳. Yb-Tm 掺杂钨酸盐纳米晶的制备及发光性能研究[J]. 吉林化工学院学报, 2018, 35(1): 51-53.
SU Ji-yi, MA Hong-tu, QU Ming-lei, SHI Lin. The Preparation and Characterization of Yb-Tm Ions Codoped Tungstate Nanocrystal. Journal of Jilin Institute of Chemical Technology, 2018, 35(1): 51-53.

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https://xuebao.jlict.edu.cn/CN/10.16039/j.cnki.cn22-1249.2018.01.013 或 https://xuebao.jlict.edu.cn/CN/Y2018/V35/I1/51

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