Sr2+对白光LED用荧光粉YAG∶Ce3+的增红研究

赵聪; 马明星; 韩涛; 曹仕秀; 朱达川

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Sr²⁺对白光LED用荧光粉YAG∶Ce³⁺的增红研究

材料合成及性能研究 | 更新时间：2020-08-12

- Sr²⁺对白光LED用荧光粉YAG∶Ce³⁺的增红研究
- The Effect of Doping Sr²⁺ on Enhancement of Red Emission of Y_2.78-xSr_xGd_0.1Al₅O₁₂∶0.06Ce³⁺ Phosphors
- 发光学报 2011年32卷第11期页码：1099-1103
- 作者机构：
  
  1. 四川大学材料科学与工程学院,四川成都,610065
  2. 重庆文理学院材料交叉学科研究中心, 重庆市高校微纳米材料工程与技术重点实验室重庆,402168
- 作者简介：
- 基金信息：
  
  重庆市科学技术基金(CSTC, 2009AB4171);重庆市高校新材料开发及应用研究创新团队(201042)资助项目
- DOI：
  中图分类号： O482.31
- 收稿日期：2011-08-08，
  
  修回日期：2011-09-29，
  
  网络出版日期：2011-11-22，
  
  纸质出版日期：2011-11-22
- 稿件说明：
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赵聪, 马明星, 韩涛, 曹仕秀, 朱达川. Sr2+对白光LED用荧光粉YAG∶Ce3+的增红研究[J]. 发光学报, 2011,32(11): 1099-1103

ZHAO Cong, MA Ming-xing, HAN Tao, CAO Shi-xiu, ZHU Da-chuan. The Effect of Doping Sr2+ on Enhancement of Red Emission of Y2.78-xSrxGd0.1Al5O12∶0.06Ce3+ Phosphors[J]. Chinese Journal of Luminescence, 2011,32(11): 1099-1103
赵聪, 马明星, 韩涛, 曹仕秀, 朱达川. Sr2+对白光LED用荧光粉YAG∶Ce3+的增红研究[J]. 发光学报, 2011,32(11): 1099-1103 DOI：

ZHAO Cong, MA Ming-xing, HAN Tao, CAO Shi-xiu, ZHU Da-chuan. The Effect of Doping Sr2+ on Enhancement of Red Emission of Y2.78-xSrxGd0.1Al5O12∶0.06Ce3+ Phosphors[J]. Chinese Journal of Luminescence, 2011,32(11): 1099-1103 DOI：

摘要

采用共沉淀法合成Y

2.78-

0.1

∶0.06Ce

系列荧光粉

用X射线衍射仪、荧光分光光度计对粉体晶型、发光性能进行表征。采用HSP-6000光谱分析仪

测荧光粉与InGaN/GaN芯片配合所得白光的色温。结果表明

对其波长和发光强度有显著影响:波长随着

的增大先红移

然后发生微弱蓝移。当

0.05时

发光强度几乎不变;

在0.05~0.1之间时

发光强度减弱缓慢;

0.1时

发光强度迅速减弱。随着波长和发光强度的变化

色温先降低后升高。当

0.2时出现杂相A

对荧光粉发光性能有负面效应。

Abstract

2.78-

0.1

∶0.06Ce

phosphors were synthesized by co-precipitation method. The crystalline structure and Spectra properties of Y

2.78-

0.1

∶0.06Ce

phosphors were investigated by X-ray diffraction(XRD) and fluorescence spectrophotometer. The color temperatures of the white LEDs fabricated with blue chip and as-prepared phosphors were studied by HSP-6000 optical spectrum analyzer. It is found that the mole fraction of Sr

has obvious influences on the emission wavelength and intensity of as-prepared phosphors. The emission wavelengths of as-prepared phosphors display red-shift at first and then blue-shift appear with the molar of Sr

increasing. The emission intensity hardly decreases with Sr

mole fraction when it is below 0.05. And then the intensity decreases slowly with the mole fraction of Sr

increasing from 0.05 to 0.1

but decreases sharply when the mole fraction of Sr

is above 0.1. With the increase of mole fraction of Sr

the color temperatures of white light decrease at first

and then increase owing to the interaction of emission wavelength and intensity. When the mole fraction of Sr

exceeds 0.2

the impure phase-A appears which has negative effects on the luminescence property of as-prepared phosphors.

关键词

Keywords

references

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