用于激光照明的荧光粉@SiO<sub>2</sub>气凝胶复合发光材料的制备与发光性能研究

冯杰; 高燕; 朱家艺; 毕于铁; 任洪波

doi:10.11884/HPLPB202436.240010

用于激光照明的荧光粉@SiO₂气凝胶复合发光材料的制备与发光性能研究

doi: 10.11884/HPLPB202436.240010

冯杰^1,,
高燕¹,
朱家艺¹,
毕于铁¹,
任洪波^{1, 2, ,}

1.
西南科技大学数理学院极端条件物质特性联合实验室，四川绵阳 621010
2.
西南科技大学环境友好能源材料国家重点实验室，四川绵阳 621010

基金项目: 环境友好能源材料国家重点实验室自主基金项目(21fksy28)；反应堆燃料与材料重点实验室基金项目(STRFML-2021-02、STRFML-2021-10)

详细信息

作者简介:
冯　杰，1063720625@qq.com

通讯作者:
任洪波，Renhb@swust.edu.cn。

中图分类号: O469
计量
- 文章访问数: 25
- HTML全文浏览量: 16
- PDF下载量: 4
- 被引次数: 0
出版历程
- 收稿日期: 2024-01-05
- 修回日期: 2024-03-11
- 录用日期: 2024-03-11
- 网络出版日期: 2024-03-19

Preparation and luminescence performance of phosphor@SiO₂ aerogel composite luminescent material for laser illumination

Feng Jie^1
,,
Gao Yan¹,
Zhu Jiayi¹,
Bi Yutie¹,
Ren Hongbo^{1, 2
, ,}

1.
Joint Laboratory for Extreme Conditions Matter Properties, School of Mathematics and Physics, Southwest University of Science and Technology, Mianyang 621010, China
2.
State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China

摘要

摘要: 通过溶胶-凝胶法成功制备了Tb₃Al₅O₁₂ (TAG) 荧光粉。热分析数据证实，增加H₃BO₃摩尔比会导致最终相的转变温度降低。同时，通过扫描电镜观察到，H₃BO₃摩尔比的提高会导致荧光粉颗粒尺寸增大。在激发波长为275 nm的条件下，发射光谱在480～650 nm范围内出现了由Tb³⁺的5d→4f跃迁产生的多个发射峰。然后通过物理掺杂和超临界干燥工艺成功制备了荧光粉@SiO₂气凝胶复合发光材料。与荧光粉相比，荧光粉@SiO₂气凝胶复合发光材料的内量子产率显著增加，可达63.64%。采用波长为355 nm的激光源激发荧光粉@SiO₂气凝胶复合发光材料，可实现长距离无导线方式发光，并具有良好均匀性。以上结果证明了荧光粉@SiO₂气凝胶复合发光材料在激光应急照明领域具有潜在的应用前景。
- 溶胶-凝胶法 /
- TAG荧光粉 /
- 荧光粉@SiO₂气凝胶复合发光材料 /
- 内量子产率 /
- 激光源激发
Abstract: The preparation of Tb₃Al₅O₁₂ (TAG) phosphors was fabricated by the sol-gel method. Thermal analysis data confirm that an increase in the H₃BO₃ molar ratio correlates with a reduction in the transition temperature of the final phase. Concurrently, scanning electron microscopy revealed that an elevated H₃BO₃ molar ratio results in larger phosphor particle sizes. Under the excitation wavelength of 275 nm, the emission spectrum manifests multiple peaks within the 480-650 nm range, originating from the 5d→4f transitions of Tb³⁺ ions. Subsequently, the phosphor@SiO₂ aerogel composite luminescent material was successfully synthesized through a combination of physical doping and a supercritical drying process. This composite luminescent material exhibited a substantial increase in the internal quantum yield, reaching 63.64% compared to the standalone phosphor. Excited by a 355 nm laser source, the phosphor@SiO₂ aerogel composite luminescent material demonstrated the capability for wire-free, long-distance luminescence with commendable uniformity. These findings demonstrate the potential application prospects of the phosphor@SiO₂ aerogel composite luminescent material in the domain of laser emergency lighting.
- sol-gel method /
- TAG phosphor /
- phosphor@SiO₂ aerogel composite luminescent material /
- internal quantum yield /
- laser source excitation

HTML全文

图 1 不同H₃BO₃摩尔比前驱体粉末的TG-DSC曲线

Figure 1. TG-DSC curves of precursor powders with different molar ratio

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图 2 LB-1、LB-2、LB-4、LB-6、HB-2样品的红外光谱

Figure 2. Infrared spectra of LB-1, LB-2, LB-4, LB-6, HB-2 samples

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图 3 不同H₃BO₃摩尔比样品的XRD图谱

Figure 3. XRD patterns of samples with different H₃BO₃ molar ratio

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图 4 LB-1、LB-3和LB-6样品的SEM图

Figure 4. SEM images of LB-1, LB-3 and LB-6 samples

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图 5 室温下LB-1样品的紫外吸收光谱

Figure 5. UV absorption spectrum of LB-1 sample at room temperature

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图 6 低H₃BO₃摩尔比体系下样品的发射光谱 (λ_ex=275 nm）

Figure 6. Emission spectra of samples in the system with low H₃BO₃ molar ratio (λ_ex=275 nm）

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图 7 高H₃BO₃摩尔比体系下样品的发射光谱(λ_ex = 275 nm)

Figure 7. Emission spectra of samples in the system with high H₃BO₃ molar ratio (λ_ex = 275 nm）

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图 8 不同激发条件下的SA-1样品及其色坐标图

Figure 8. SA-1 samples under different excitation conditions and color coordinate plot

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图 9 SA-1样品的内量子产率图

Figure 9. Internal quantum yield plot for SA-1 samples

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表 1 前驱体的试剂摩尔比

Table 1. Molar ratio of the precursor reagents

sample	molar ratio of Tb₄O₇, Al(NO₃)₃·9H₂O and H₃BO₃
LB-1	3:20.0:0
LB-2	3:19.6:0.40
LB-3	3:18.8:1.20
LB-4	3:18.0:2.00
LB-5	3:17.2:2.80
LB-6	3:16.8:3.20
HB-1	3:20.0:23.0
HB-2	3:20.0:32.2
HB-3	3:20.0:36.8
HB-4	3:20.0:46.0

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表 2 SiO₂气凝胶与荧光粉@SiO₂气凝胶复合发光材料样品编号

Table 2. SiO₂ aerogel and phosphor@SiO₂ aerogel composite luminescent material samples

sample	C/%
SA-0	0
SA-1	15
SA-2	20

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表 3 低H₃BO₃摩尔比体系样品的XRD图谱进行精修后所获得的晶胞参数

Table 3. Cellular parameters obtained after refinement of XRD patterns of samples from the low H₃BO₃ molar ratio system

sample	a/nm	b/nm	c/nm	V/nm³
LB-1	1.208526	1.208526	1.208526	1.76509
LB-2	1.208450	1.208450	1.208450	1.76476
LB-3	1.208303	1.208303	1.208303	1.76412
LB-4	1.208256	1.208256	1.208256	1.76391
LB-5	1.208259	1.208259	1.208259	1.76392
LB-6	1.208254	1.208254	1.208254	1.76390

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表 4 HB-4、SA-0、SA-1和SA-2样品的性能参数

Table 4. Performance parameters of HB-4, SA-0, SA-1 and SA-2 samples

sample	Y/%	specific surface area/(m²·g⁻¹)
HB-4	53.61	/
SA-0	/	577.76
SA-1	63.64	482.24
SA-2	23.07	441.38

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