Luminescence Properties of Sr5-x(PO4)2SiO4：xEu2+ Apatite Phosphors and Its Application in LED

XIA Wei; ZHANG Xi-yan; WANG Xi-feng; XIAO Zhi-guo

doi:10.3788/fgxb20133409.1161

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Luminescence Properties of Sr_5-x(PO₄)₂SiO₄：xEu²⁺ Apatite Phosphors and Its Application in LED

更新时间：2020-08-12

- Luminescence Properties of Sr_5-x(PO₄)₂SiO₄：xEu²⁺ Apatite Phosphors and Its Application in LED
- Chinese Journal of Luminescence Vol. 34, Issue 9, Pages: 1161-1166(2013)
- 作者机构：
  
  1. 长春理工大学材料科学与工程学院,吉林长春,130022
  2. 大连路明发光科技股份有限公司,辽宁大连,116025
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20133409.1161
  CLC： O482.31
- Received：06 May 2013，
  
  Revised：03 July 2013，
  
  Published：10 September 2013
- 稿件说明：
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夏威, 张希艳, 王细凤, 肖志国. Sr5-x(PO4)2SiO4：xEu2+磷灰石荧光粉的发光性能及LED应用研究[J]. 发光学报, 2013,34(9): 1161-1166

XIA Wei, ZHANG Xi-yan, WANG Xi-feng, XIAO Zhi-guo. Luminescence Properties of Sr5-x(PO4)2SiO4：xEu2+ Apatite Phosphors and Its Application in LED[J]. Chinese Journal of Luminescence, 2013,34(9): 1161-1166
夏威, 张希艳, 王细凤, 肖志国. Sr5-x(PO4)2SiO4：xEu2+磷灰石荧光粉的发光性能及LED应用研究[J]. 发光学报, 2013,34(9): 1161-1166 DOI： 10.3788/fgxb20133409.1161.

XIA Wei, ZHANG Xi-yan, WANG Xi-feng, XIAO Zhi-guo. Luminescence Properties of Sr5-x(PO4)2SiO4：xEu2+ Apatite Phosphors and Its Application in LED[J]. Chinese Journal of Luminescence, 2013,34(9): 1161-1166 DOI： 10.3788/fgxb20133409.1161.

摘要

采用高温固相法在还原气氛下合成了Sr

(PO

)

SiO

磷灰石型荧光粉。通过XRD、PL、SEM对样品的晶体结构、激发和发射光谱以及形貌进行了表征。在Eu

浓度较低时

占据不同的晶体格位而形成两个发光中心

发射光谱具有双发射峰;随着掺杂浓度的增加

之间的能量传递使黄光区域的发射峰强度逐步增强

并在

=0.075时达到最大值。发射光谱红移可能是Eu

受晶场强度和能量传递共同作用的结果。考察了该材料在白光LED中的封装应用性能

其双发射峰有助于提升白光LED光源的显色性。

Abstract

The apatite phosphors of Sr

(PO

)

SiO

were prepared by a high temperature solid-state reaction method in a reducing atmosphere. The crystal structure

excitation and emission spectra and morphology of the samples were characterized by XRD

PL and SEM methods

respectively. The effect of Eu

doping concentration on the luminescence properties of Sr

(PO

)

SiO

was also investigated. Two different luminescence centers were formed because Eu

occupied two different crystallographic site in the crystal structure. Two emission bands located in blue and yellow light region were observed in a low concentration of Eu

. Along with the increase of Eu

doping concentration

the PL intensity of emission peak in yellow light region gradually increased because of the energy transfer between Eu

ions

and reached the maximum value when

=0.075. Red shift of the emission peak may be due to the joint action of crystal field strength and the mechanism of energy transfer. The application of these phosphors to the white LED was also explored. It is found that the phosphors with double emission peaks are beneficial to the improvement of color rendering properties to the LED light sources.

关键词

Keywords

references

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