无团聚YAG:Ce3+荧光粉的制备与表征

郜盛夏; 陈毅彬; 曾人杰

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无团聚YAG:Ce³⁺荧光粉的制备与表征

论文 | 更新时间：2020-08-12

- 无团聚YAG:Ce³⁺荧光粉的制备与表征
- Preparation and Characterization of Agglomerate-free YAG:Ce³⁺ Phosphor by Co-precipitating and Spray Drying
- 发光学报 2010年31卷第6期页码：806-811
- 作者机构：
  
  厦门大学材料学院,福建厦门,361005
- 作者简介：
- 基金信息：
  
  福建省科技重大专项(2005HZ02-2)资助项目()
- DOI：
  中图分类号： O482.31
- 收稿日期：2010-05-19，
  
  修回日期：2010-07-14，
  
  网络出版日期：2010-11-22，
  
  纸质出版日期：2010-11-22
- 稿件说明：
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郜盛夏, 陈毅彬, 曾人杰. 无团聚YAG:Ce3+荧光粉的制备与表征[J]. 发光学报, 2010,31(6): 806-811

GAO Sheng-xia, CHEN Yi-bin, ZENG Ren-jie. Preparation and Characterization of Agglomerate-free YAG:Ce3+ Phosphor by Co-precipitating and Spray Drying[J]. Chinese Journal of Luminescence, 2010,31(6): 806-811
郜盛夏, 陈毅彬, 曾人杰. 无团聚YAG:Ce3+荧光粉的制备与表征[J]. 发光学报, 2010,31(6): 806-811 DOI：

GAO Sheng-xia, CHEN Yi-bin, ZENG Ren-jie. Preparation and Characterization of Agglomerate-free YAG:Ce3+ Phosphor by Co-precipitating and Spray Drying[J]. Chinese Journal of Luminescence, 2010,31(6): 806-811 DOI：

摘要

采用共沉淀-喷雾干燥法制备YAG:Ce

荧光粉。前驱体经热处理、研磨、酸洗碱洗后形成荧光粉。研究了前驱体料浆浓度、热处理条件、研磨、酸洗碱洗对粉末晶相、颗粒形貌、粒度和发光性能的影响。研究发现:料浆浓度为0.2

0.4

0.6mol/L时

前驱体颗粒形貌分别呈碎屑、光滑和褶皱状球形;无团聚光滑球形前驱体经1100℃热处理4h后

XRD未检测到杂相;继续升温至1550℃

荧光粉相对亮度随之提高;酸洗碱洗能够去除碎屑

获无团聚荧光粉

提高相对亮度。

Abstract

Co-precipitation together with spray dry processing was introduced to prepare YAG:Ce

precursor first time. YAG:Ce

phosphor could be obtained after heat-treating

milling and further acid and alkali washing. Effects of spray suspension concentration

heat treatment temperature and the acid and alkali washing on particle morphology

type of crystal phase and photoluminescence (PL) intensity of the powder were investigated. The precursor particles appeared nearly spherical balls with fragments in the surface

smooth or rugged ones when the concentration of spray suspension was 0.2

0.4 and 0.6 mol/L

respectively. YAG phase could be obtained by heat-treating the smooth spherical precursor at 1 100 ℃ for 4 h. The PL intensity of the powder raised with heat-treating temperature increased up to 1 550 ℃. Agglomerate-free YAG:Ce

phosphor with good preferences could be obtained by acid and alkali washing which could remove scraps adhering on particles and break aggregates between them.

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references

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