Luminescent Properties of CaYAlO4:Mn4+ Red Phosphors Prepared by Sol-gel Method

CHEN Cai-hua; YANG Guo-hui; LIANG Li-fang; MENG Li-li; ZHANG Li-xia

doi:10.3788/fgxb20173805.0567

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Luminescent Properties of CaYAlO₄:Mn⁴⁺ Red Phosphors Prepared by Sol-gel Method

更新时间：2020-08-12

- Luminescent Properties of CaYAlO₄:Mn⁴⁺ Red Phosphors Prepared by Sol-gel Method
- Chinese Journal of Luminescence Vol. 38, Issue 5, Pages: 567-573(2017)
- 作者机构：
  
  广西师范学院化学与材料科学学院, 广西南宁 530001
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China(21161004);Natural Science Foundation of Guangxi Province(2011GXNSFA018048)
- DOI：10.3788/fgxb20173805.0567
  CLC： O614;O482.31
- Received：25 November 2016，
  
  Revised：11 December 2016，
  
  Published：05 May 2017
- 稿件说明：
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陈彩花, 杨国辉, 梁利芳等. 溶胶凝胶法合成CaYAlO4:Mn4+红色荧光粉及其荧光性能研究[J]. 发光学报, 2017,38(5): 567-573

CHEN Cai-hua, YANG Guo-hui, LIANG Li-fang etc. Luminescent Properties of CaYAlO4:Mn4+ Red Phosphors Prepared by Sol-gel Method[J]. Chinese Journal of Luminescence, 2017,38(5): 567-573
陈彩花, 杨国辉, 梁利芳等. 溶胶凝胶法合成CaYAlO4:Mn4+红色荧光粉及其荧光性能研究[J]. 发光学报, 2017,38(5): 567-573 DOI： 10.3788/fgxb20173805.0567.

CHEN Cai-hua, YANG Guo-hui, LIANG Li-fang etc. Luminescent Properties of CaYAlO4:Mn4+ Red Phosphors Prepared by Sol-gel Method[J]. Chinese Journal of Luminescence, 2017,38(5): 567-573 DOI： 10.3788/fgxb20173805.0567.

摘要

采用溶胶凝胶法合成CaYAl

：

红色荧光粉，用差热热重分析仪（DSC-TGA）、X射线粉末衍射仪（XRD）、透射电镜（TEM）以及荧光分光光度计对荧光粉进行结构和性能的表征，研究合成温度、反应时间及Mn

掺杂浓度对CaYAl

：

发光性能的影响。研究结果表明，在335 nm光激发下，荧光粉发射660~780 nm范围的红光，归属于Mn

的

能级跃迁。在712 nm光监测下，样品呈现两组激发宽峰，分别归属于Mn

离子的

（335 nm）和

（475 nm）能级跃迁。当煅烧温度为1 200 ℃、反应时间为6 h和Mn

的掺杂摩尔分数为0.5%时，CaYAl

：

的发光强度最大。

Abstract

CaYAl

red phosphors were prepared by sol-gel method. Differential thermal and thermogravimetric analysis (DSC-TGA)

X-ray powder diffraction (XRD)

transmission elec-tron microscopy (TEM) and photoluminescence spectrophotometer were utilized to characterize the samples. The effects of the factors

such as synthesis temperature

reaction time and concentration of Mn

on the luminescent properties of the phosphors were studied. The samples give red emissions centered at 660-780 nm under 335 nm excitation

which correspond to

transition of Mn

. The excitation spectrum monitored by 712 nm consists of two broad excitation bands resulting from

(335 nm) and

(475 nm) transition of Mn

. The maximum luminescent intensity of CaYAl

phosphors can be obtained with

=0.005 under calcination at 1 200 ℃ for 6 h.

关键词

Keywords

references

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