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Eu3+激活K2CaP2O7荧光粉的制备和发光性质
Preparation and Luminescence Properties of Eu3+ Activated K2CaP2O7 Phosphors
- 发光学报 2018年39卷第2期 页码：121-126
- 作者机构：
江西理工大学 冶金与化学工程学院,江西 赣州,341000
- 作者简介：
- 基金信息：江西省自然科学基金（20161BAB216124）();江西省教育厅科学技术研究项目（GJJ150632，GJJ160672）();江西理工大学博士启动基金（jxxjb
DOI：10.3788/fgxb20183902.0121
中图分类号： O482.31纸质出版日期：2018-2-5，
网络出版日期：2017-9-11，
收稿日期：2017-6-1，
修回日期：2017-8-19，
扫 描 看 全 文
赖海珍, 朱斌, 王婧等. Eu<sup>3+</sup>激活K<sub>2</sub>CaP<sub>2</sub>O<sub>7</sub>荧光粉的制备和发光性质[J]. 发光学报, 2018,39(2): 121-126
LAI Hai-zhen, ZHU Bin, WANG Jing etc. Preparation and Luminescence Properties of Eu<sup>3+</sup> Activated K<sub>2</sub>CaP<sub>2</sub>O<sub>7</sub> Phosphors[J]. Chinese Journal of Luminescence, 2018,39(2): 121-126
赖海珍, 朱斌, 王婧等. Eu<sup>3+</sup>激活K<sub>2</sub>CaP<sub>2</sub>O<sub>7</sub>荧光粉的制备和发光性质[J]. 发光学报, 2018,39(2): 121-126 DOI： 10.3788/fgxb20183902.0121.
LAI Hai-zhen, ZHU Bin, WANG Jing etc. Preparation and Luminescence Properties of Eu<sup>3+</sup> Activated K<sub>2</sub>CaP<sub>2</sub>O<sub>7</sub> Phosphors[J]. Chinese Journal of Luminescence, 2018,39(2): 121-126 DOI： 10.3788/fgxb20183902.0121.
摘要
采用高温固相法制备了系列不同浓度Eu
3+
离子掺杂的K
2
CaP
2
O
7
红色荧光粉。通过X射线衍射、扫描电子显微镜、荧光光谱和荧光寿命曲线等手段对荧光粉的物相结构、形貌以及发光性质进行了研究。结果表明所制备的荧光粉均属于单斜结构，Eu
3+
离子掺杂没有引起晶体结构明显变化，荧光粉形貌不规则，颗粒为微米量级且部分发生团聚。在393 nm紫外光激发下，荧光粉显示出红光发射，最强发射峰位于613 nm。Eu
3+
离子掺杂浓度对发光强度有显著影响，最佳掺杂摩尔分数为0.08，由此计算能量传递临界距离为1.61 nm。荧光寿命受掺杂浓度影响较小，当Eu
3+
掺杂摩尔分数为0.005~0.10时，荧光寿命在2.45~2.58 ms范围内。变温发射光谱显示，测试温度为150℃时，荧光粉的发光强度为室温的73%。研究表明，Eu
3+
离子掺杂的K
2
CaP
2
O
7
是性能较好的红色荧光粉。
Abstract
A series of Eu
3+
doped K
2
CaP
2
O
7
phosphors were prepared by high temperature solid state reaction method. The phase structure
morphology
luminescence properties of the phosphors were investigated by XRD
SEM
luminescence spectra and luminescence decay curves. The results show that all the phosphors have monoclinic structure
the doping of Eu
3+
ions does not significantly influence the structure of K
2
CaP
2
O
7
host lattice. The phosphors exhibit irregular morphology with the particle size of several microns. Under 393 nm excitation
Eu
3+
doped K
2
CaP
2
O
7
samples emit red lights with the most intense peak at 613 nm. The optimal doping concentration of Eu
3+
is 0.08 in the host
the critical energy transfer distance between Eu
3+
ions is calculated to be 1.61 nm. The doping concentration has little influence on the decay time of Eu
3+
the decay times of all the samples are in the 2.45-2.58 ms range. Moreover
the relative emission intensity maintains 73% of its original intensity when the temperature reaches 150℃. All the above results indicate that Eu
3+
doped K
2
CaP
2
O
7
may be a potential red phosphor.
关键词
红色荧光粉Eu3+K2CaP2O7
Keywords
red phosphorEu3+K2CaP2O7
references
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