Preparation and Luminescent Properties of ZnAl2O4/CaAl12O19∶Mn4+ Phosphors

Gui LIN; Qi LUO; Qian CHEN; Yan-ting LIU; Li-li MENG

doi:10.37188/CJL.20210395

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Preparation and Luminescent Properties of ZnAl₂O₄/CaAl₁₂O₁₉∶Mn⁴⁺ Phosphors

Synthesis and Properties of Materials | 更新时间：2022-04-20

- Preparation and Luminescent Properties of ZnAl₂O₄/CaAl₁₂O₁₉∶Mn⁴⁺ Phosphors
  增强出版
- Chinese Journal of Luminescence Vol. 43, Issue 4, Pages: 536-544(2022)
- 作者机构：
  
  1.南宁师范大学　化学与材料学院，广西天然高分子化学与物理重点实验室，广西　南宁　530001
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(51762008)
- DOI：10.37188/CJL.20210395
  CLC：
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Gui LIN, Qi LUO, Qian CHEN, et al. Preparation and Luminescent Properties of ZnAl₂O₄/CaAl₁₂O₁₉∶Mn⁴⁺ Phosphors. [J]. Chinese Journal of Luminescence 43(4):536-544(2022)
DOI：

Gui LIN, Qi LUO, Qian CHEN, et al. Preparation and Luminescent Properties of ZnAl₂O₄/CaAl₁₂O₁₉∶Mn⁴⁺ Phosphors. [J]. Chinese Journal of Luminescence 43(4):536-544(2022) DOI： 10.37188/CJL.20210395.

摘要

采用传统高温固相法制备了系列,x,ZnAl,2,O,4,/CaAl,12,O,19,∶Mn,4+,(,x,ZAO/CAO∶Mn,4+,)混合相红光荧光粉，研究了ZnAl,2,O,4,掺杂对CaAl,12,O,19,∶Mn,4+,形貌和发光性能的影响。X射线衍射(XRD)表征结果表明，在1 723 K下煅烧6 h成功合成了,x,ZAO/CAO∶Mn,4+,混合相荧光粉，随着ZnAl,2,O,4,掺杂量的增加依然保持两相共存。荧光光谱分析表明，当,x,=1时，ZAO/CAO∶Mn,4+,具有最大的荧光强度，其值比CaAl,12,O,19,∶Mn,4+,的荧光强度提高了203%。相对于CaAl,12,O,19,∶Mn,4+,荧光粉，ZAO/CAO∶Mn,4+,荧光粉具有更长的荧光寿命，其内量子效率提高了211%。在298~418 K温度范围内，ZAO/CAO∶Mn,4+,荧光粉的绝对灵敏度(,S,a,)为4.32×10,-3, K,-1,；在418 K时，最大相对灵敏度(,S,r,)为3.65×10,-3, K,-1,。该荧光粉在光学测温方面具有潜在应用价值。

Abstract

A series of ,x,ZnAl,2,O,4,/CaAl,12,O,19,∶Mn,4+, (,x,ZAO/CAO∶Mn,4+,) mixed-phase red-emit phosphors were prepared by traditional high-temperature solid-state method. The influence of ZnAl,2,O,4, doping on the morphology and luminescence properties of CaAl,12,O,19,∶Mn,4+, was investigated. The X-ray diffraction(XRD) characterization results show that the mixed-phase phosphors were successfully synthesized after sintered at 1 723 K for 6 h, and the two-phase coexistence is maintained with the increase of ZnAl,2,O,4, doping amount. Fluorescence spectrum shows that ZAO/CAO∶Mn,4+, has the largest fluorescence intensity when ,x,=1, which is 203% higher than that of CaAl,12,O,19,∶Mn,4+,. Compared with CaAl,12,O,19,∶Mn,4+, phosphor, the lifetime of ZAO/CAO∶Mn,4+, is improved and internal quantum yield of ZAO/CAO∶Mn,4+, is 211% higher than that of CaAl,12,O,19,∶Mn,4+,. An absolute sensitivity(,S,a,) of 4.32×10,-3, K,-1, of the ZAO/CAO∶Mn,4+, phosphor was obtained in the range of 298-418 K and the maximum relative sensitivity(,S,r,) was 3.65×10,-3, K,-1, at 418 K, implying that it has potential application value in optical thermometry.

关键词

荧光粉光学测温发光性能Mn4+ZnAl2O4/CaAl12O19

Keywords

phosphoroptical thermometryluminescent propertiesMn4+ZnAl2O4/CaAl12O19

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