Yb3+/Ho3+/Tm3+三掺杂LiTaO3多晶材料的上转换发光特性

张涛; 李振辉; 崔彩霞; 张丹燚; 蔡玉东; 辛一凡

doi:10.11884/HPLPB202335.230204

Yb³⁺/Ho³⁺/Tm³⁺三掺杂LiTaO₃多晶材料的上转换发光特性

doi: 10.11884/HPLPB202335.230204

张涛^{1, 2,},
李振辉^{1, 2},
崔彩霞^1, ,,
张丹燚^1, ,,
蔡玉东²,
辛一凡³

1.
桂林电子科技大学北海校区，广西北海 536000
2.
桂林电子科技大学信息与通信学院，广西桂林 541004
3.
哈尔滨工程大学理学院，哈尔滨 150001

基金项目: 国家自然科学基金项目(12064005) ；广西自然科学基金项目（2021GXNSFDA075006, 2021GXNSFAA220086）；桂林电子科技大学研究生教育创新计划项目（2022YCXS057）；桂林电子科技大学研究生课程建设项目（YKC202208）

详细信息

作者简介:
张　涛，zt@guet.edu.cn

通讯作者:
崔彩霞，49470046@qq.com

张丹燚，63407583@qq.com。

中图分类号: O782⁺.9；O614.33
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- 被引次数: 0
出版历程
- 收稿日期: 2023-06-30
- 修回日期: 2023-11-15
- 录用日期: 2023-10-17
- 网络出版日期: 2023-11-20
- 刊出日期: 2023-12-15

Upconversion luminescence properties of Yb³⁺/Ho³⁺/Tm³⁺ tri-doped LiTaO₃ polycrystals

Zhang Tao^{1, 2
,},
Li Zhenhui^{1, 2},
Cui Caixia^{1
, ,},
Zhang Danyi^{1
, ,},
Cai Yudong²,
Xin Yifan³

1.
Beihai Campus, Guilin University of Electronic Technology, Beihai 536000, China
2.
School of Information and Communication, Guilin University of Electronic Technology, Guilin 541004, China
3.
College of Science, Harbin Engineering University, Harbin 150001, China

摘要

摘要: 采用高温固相合成法制备了多组Yb³⁺/Ho³⁺/Tm³⁺不同物质的量分数掺杂的LiTaO₃多晶材料，测试了双掺Yb³⁺/Ho³⁺，Yb³⁺/Tm³⁺和三掺Yb³⁺/Ho³⁺/Tm³⁺的LiTaO₃多晶的X射线衍射图谱、紫外-可见吸收谱和上转换荧光发射谱。X射线衍射（XRD）结果显示，稀土离子掺杂没有改变LiTaO₃多晶的物质结构，这表明稀土离子以取代基质离子的方式进入了晶格中。样品的紫外吸收边显示，增加Ho³⁺或Tm³⁺物质的量分数会导致吸收边先红移再蓝移。在980 nm泵浦光激发下，可见光区域中出现上转换蓝光（475 nm）、绿光（545 nm）和红光（663 nm和650 nm）发射，通过改变LiTaO₃中的激活离子Ho³⁺-Tm³⁺物质的量分数，可对上转换荧光色度进行调节，物质的量分数配比为2.0%Yb³⁺/0.05%Ho³⁺/0.4%Tm³⁺的掺杂LiTaO₃多晶材料实现了最为接近标准白光的发射。
- LiTaO₃多晶 /
- 高温固相合成 /
- Yb³⁺/Ho³⁺/Tm³⁺掺杂 /
- 上转换发光
Abstract: The Yb³⁺/Ho³⁺/Tm³⁺-doped LiTaO₃ polycrystalline materials at various doping mole fractions were prepared using a high-temperature solid-state synthesis method. The X-ray diffraction (XRD) patterns, ultraviolet-visible absorption (UV-Vis) spectra, and upconversion fluorescence emission spectra of Yb³⁺/Ho³⁺ -doped, Yb³⁺/Tm³⁺-doped, and Yb³⁺/Ho³⁺/Tm³⁺-doped LiTaO₃ samples were tested. The XRD results indicate that the doped rare earth ions have not altered the crystal structure of LiTaO₃, suggesting that the rare earth ions entered the lattice by replacing the host ions. The UV absorption edge of the samples shows a redshift followed by a blueshift with increasing mole fractions of Ho³⁺ or Tm³⁺. Under excitation from a 980 nm pump source, upconversion blue light (475 nm), green light (545 nm), and red light (663 nm and 650 nm) were observed in the visible region. The upconversion fluorescence chromaticity can be tailored by varying the mole fractions of Ho³⁺/Tm³⁺ in LiTaO₃. Among the samples, the mole fractions 2.0%Yb³⁺/0.05%Ho³⁺/0.4%Tm³⁺ doped LiTaO₃ polycrystalline specimen exhibits the excellent upconversion output near the standard white light.
- LiTaO₃ polycrystal /
- high-temperature solid-state synthesis /
- Yb³⁺/Ho³⁺/Tm³⁺ doping /
- upconversion luminescence

HTML全文

图 1 LiTaO₃:Yb³⁺/Ho³⁺/Tm³⁺多晶的XRD谱图

Figure 1. XRD pattern of LiTaO₃:Yb³⁺/Ho³⁺/Tm³⁺ polycrystals

下载: 全尺寸图片幻灯片

图 2 Yb³⁺/Ho³⁺/Tm³⁺掺杂LiTaO₃多晶的紫外-可见吸收光谱

Figure 2. UV absorption spectroscopy of LiTaO₃:Yb³⁺/Ho³⁺/Tm³⁺ polycrystals

下载: 全尺寸图片幻灯片

图 3 Yb³⁺/xHo³⁺/Tm³⁺掺杂LiTaO₃多晶的发射光谱

Figure 3. Emission spectrum of Yb³⁺/xHo³⁺/Tm³⁺ doped LiTaO₃ polycrystals

下载: 全尺寸图片幻灯片

图 4 980 nm激发下的Ho³⁺/Yb³⁺/Tm³⁺掺杂LiTaO₃多晶的荧光光谱

Figure 4. Fluorescence spectrum of Ho³⁺/Yb³⁺/Tm³⁺ doped LiTaO₃ polycrystals under excitation at 980 nm

下载: 全尺寸图片幻灯片

图 5 LiTaO₃:Yb³⁺/Ho³⁺/Tm³⁺多晶在980 nm激发下的上转换发光机理

Figure 5. Upconversion luminescence mechanism of LiTaO₃:Yb³⁺/Ho³⁺/Tm³⁺ polycrystals under excitation at 980 nm

下载: 全尺寸图片幻灯片

图 6 LiTaO₃:2.0% Yb³⁺/0.1% Tm³⁺和LiTaO₃:2.0% Yb³⁺/0.05% Ho³⁺的荧光衰减曲线

Figure 6. Fluorescence decay curves of LiTaO₃:2.0% Yb³⁺/0.1% Tm³⁺ and LiTaO₃:2.0% Yb₃₊/0.05% Ho³⁺

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图 7 LiTaO₃:0.1% Ho³⁺/2.0% Yb³⁺/0.2% Tm³⁺样品的荧光衰减曲线

Figure 7. Fluorescence decay curves of LiTaO₃:0.1% Ho³⁺/2.0% Yb³⁺/0.2% Tm³⁺

下载: 全尺寸图片幻灯片

图 8 不同物质的量分数Yb³⁺/Ho³⁺/Tm³⁺掺杂LiTaO₃多晶上转换荧光的CIE坐标图

Figure 8. CIE coordinate diagram of LiTaO₃ polycrystals with different doping mole fractions of Yb³⁺/Ho^3+/Tm³⁺ ions

下载: 全尺寸图片幻灯片

表 1 实验制备样品的原材料配比

Table 1. Raw material ratios of experimentally prepared samples

sample No.	[Li]/[Ta]	mole fraction of Ho³⁺/%	mole fraction of Yb³⁺/%	mole fraction of Tm³⁺/%
1	0.951	0.05	2.0	0
2	0.951	0.05	2.0	0.2
3	0.951	0.10	2.0	0.2
4	0.951	0.20	2.0	0.2
5	0.951	0.30	2.0	0.2
6	0.951	0	2.0	0.1
7	0.951	0.05	2.0	0.1
8	0.951	0.05	2.0	0.3
9	0.951	0.05	2.0	0.4

下载: 导出CSV

表 2 LiTaO₃:Ho³⁺/Yb³⁺/Tm³⁺多晶上转换矢荧光光谱的CIE色度坐标

Table 2. CIE coordinates of upconversion fluorescence spectrum of LiTaO₃:Ho³⁺/Yb³⁺/Tm³⁺ polycrystals

sample No.	CIE(x, y)	T_c/K
2	(0.334, 0.423)	5463
3	(0.337, 0.433)	5383
4	(0.349, 0.452)	5098
5	(0.353, 0.481)	5052
7	(0.334, 0.485)	5447
8	(0.341, 0.403)	5243
9	(0.356, 0.361)	4650

下载: 导出CSV

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