Synthesis and Photoluminescence Characteristics of 12CaO&middot;7Al2O3/5CaO&middot;3Al2O3：Sm3+ Red Phosphors

ZHANG Xin-yang; SUN Shang-qian; YAN Duan-ting; ZHANG Meng; LIU Yu-xue

doi:10.3788/fgxb20143508.0911

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Synthesis and Photoluminescence Characteristics of 12CaO·7Al₂O₃/5CaO·3Al₂O₃：Sm³⁺ Red Phosphors

更新时间：2020-08-12

- Synthesis and Photoluminescence Characteristics of 12CaO·7Al₂O₃/5CaO·3Al₂O₃：Sm³⁺ Red Phosphors
- Chinese Journal of Luminescence Vol. 35, Issue 8, Pages: 911-916(2014)
- 作者机构：
  
  1. 东北师范大学物理学院,吉林长春,130021
  2. 伊犁师范学院物理科学与技术学院, 新疆伊宁,835000
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20143508.0911
  CLC： O482.31
- Received：21 April 2014，
  
  Revised：03 June 2014，
  
  Published：03 August 2014
- 稿件说明：
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张新阳, 孙尚前, 严端廷等. 12CaO·7Al2O3/5CaO·3Al2O3：Sm3+新型红色荧光粉的制备及发光性质[J]. 发光学报, 2014,35(8): 911-916

ZHANG Xin-yang, SUN Shang-qian, YAN Duan-ting etc. Synthesis and Photoluminescence Characteristics of 12CaO·7Al2O3/5CaO·3Al2O3：Sm3+ Red Phosphors[J]. Chinese Journal of Luminescence, 2014,35(8): 911-916
张新阳, 孙尚前, 严端廷等. 12CaO·7Al2O3/5CaO·3Al2O3：Sm3+新型红色荧光粉的制备及发光性质[J]. 发光学报, 2014,35(8): 911-916 DOI： 10.3788/fgxb20143508.0911.

ZHANG Xin-yang, SUN Shang-qian, YAN Duan-ting etc. Synthesis and Photoluminescence Characteristics of 12CaO·7Al2O3/5CaO·3Al2O3：Sm3+ Red Phosphors[J]. Chinese Journal of Luminescence, 2014,35(8): 911-916 DOI： 10.3788/fgxb20143508.0911.

摘要

采用自蔓延燃烧法制备了不同Sm

掺杂浓度的12CaO7Al

（C12A7：

%Sm

）荧光粉。在404 nm近紫外光激发下，观察到了位于565，599，648 nm附近的3个光发射峰，分别归属于Sm

的

5/2

（

=5，7，9）能级跃迁。随着Sm

掺杂浓度增加，红光发射强度呈现了先增大后减小的规律，优化的Sm

掺杂摩尔分数为1.5%，发光的浓度猝灭效应可归因于Sm

之间发生了交叉弛豫过程。采取混相策略，通过降低初始粉体的煅烧温度至900℃获得了12CaO7Al

/5CaO3Al

：1.5%Sm

（C12A7/C5A3：Sm

）混相荧光粉，进一步提高了红光发射强度。利用变温光致发光谱计算得到混相样品的热激活能约为200 meV，结果表明该混相荧光粉具有良好的热稳定性。

Abstract

12CaO7Al

(C12A7:Sm

) phosphors with different Sm

doping concentrations were synthesized through self-propagating combustion method. Under 404 nm UV excitation

there are three dominating emission peaks observed at 565

599 and 648 nm

corresponding to the

5/2

(

9) transitions of Sm

respectively. With the increasing of Sm

doping concentration

the red emitting intensity exhibited a behavior that increased firstly and then decreased. The optimal Sm

ion concentration is 1.5% and the concentration quenching effect is due to the cross-relaxation (CR) processes between the Sm

ions. Through adopting mixed-phase strategy

12CaO 7Al

/5CaO3Al

:1.5%Sm

(C12A7/C5A3:Sm

) powders were prepared by decreasing the calcining temperature to 900℃ and the enhanced red emitting intensity was obtained. The temperature-dependent photoluminescence showed that the thermal activation energy of the mixed-phase sample is about 200 meV and its thermal stability is high.

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Keywords

references

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Synthesis and Photoluminescence Characteristics of 12CaO·7Al2O3/5CaO·3Al2O3：Sm3+ Red Phosphors

DOI：10.3788/fgxb20143508.0911

摘要

Abstract

关键词

Keywords

references

Synthesis and Photoluminescence Characteristics of 12CaO·7Al₂O₃/5CaO·3Al₂O₃：Sm³⁺ Red Phosphors