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Zn<sub><sup>2+</sup></sub>摻雜對共沉淀法制備Ce:Gd<sub>3</sub>Ga<sub>3</sub>Al<sub>2</sub>O<sub>12</sub>陶瓷粉體閃爍性能的影響
作者:
作者單位:

1.中國科學院福建物質(zhì)結(jié)構(gòu)研究所;2.中國科學院大學

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基金項目:

國家重點研發(fā)計劃（No.2017YFB1104504 and 2016YFB0701004）


Effect of Zn<sub><sup>2+</sup></sub> codoping on scintillation and properties of Ce-doped Gd<sub>3</sub>Ga<sub>3</sub>Al<sub>2</sub>O<sub>12</sub> ceramic powder prepared by co-precipitation method
Author:
Affiliation:

Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences

Fund Project:

Natural Key Research and Development Program（No.2017YFB1104504 and 2016YFB0701004）

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    摘要:

    本文利用化學共沉淀法制備Zn<sub><sup>2+</sup></sub>共摻的Ce:GAGG陶瓷粉體。研究了Zn<sub><sup>2+</sup></sub>共摻的Ce:GAGG陶瓷前驅(qū)粉體的TG/DTA和FTIR曲線；分析了不同煅燒溫度對Ce:GAGG陶瓷粉體相、形貌和顆粒度分布的影響；系統(tǒng)研究了Zn<sub><sup>2+</sup></sub>含量對Ce:GAGG陶瓷粉體光致發(fā)光,輻射發(fā)光,激發(fā)光譜和熒光壽命的影響。研究表明：前驅(qū)粉體在883℃的相組成為GdAlO<sub>3</sub>相和GAGG相；前驅(qū)粉體在煅燒溫度為900℃時,完全轉(zhuǎn)化為GAGG相；當煅燒溫度為1200℃時,GAGG顆粒尺寸控制在20nm~60nm,分布均勻；隨著 Zn<sub><sup>2+</sup></sub>含量的變化,光致發(fā)光和輻射發(fā)光強度也相應變化,特別的,當Zn<sub><sup>2+</sup></sub>含量為0.4mol%時,光致發(fā)光和輻射發(fā)光強度達到最大值；隨著Zn<sub><sup>2+</sup></sub>摻雜含量的上升,熒光壽命出現(xiàn)下降的趨勢。因此,Zn<sub><sup>2+</sup></sub>含量對Ce:GAGG陶瓷粉體的輻射發(fā)光具有明顯的影響,對降低熒光壽命具有積極的作用,對于提高GAGG閃爍材料的快速響應具有重要意義。

    Abstract:

    Zinc codoping Gd<sub>3</sub>Ga<sub>3</sub>Al<sub>2</sub>O<sub>12</sub>:Ce (Ce:GAGG) ceramic precursors have been synthesized by chemical co-precipitation method. Thermal gravimetric and differential thermal analysis of the precursor powders are obtained, and phases including GdAlO<sub>3</sub> and GAGG are generated at 883°C. The chemical molecule of precursors is analyzed by FTIR. The phases and morphology of the precursors for different calcination temperature are studied by XRD and SEM. Precursors absolutely convert to Ce:GAGG powders at 900°C. The particles calcined at 1200°C for Ce:GAGG powders with size of 20~60nm become homogeneous and smooth. The effect of PEG on the morphology of the precursors is investigated. Particle size and size range of Ce:GAGG powders calcined at different temperatures were investigated. The influence of codoping of Ce:GAGG with different Zn<sub><sup>2+</sup></sub> content on photoluminescence, radioluminescence, excitation spectra and fluorescent lifetime are analyzed. The emission spectra of Ce:GAGG codoping 0.4% Zn<sub><sup>2+</sup></sub> content has the highest intensity. The Zn<sub><sup>2+</sup></sub> in Ce:GAGG powders has a positive effect on a fast component with short fluorescence lifetime.

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邱智華,張鮮輝,王帥華,吳少凡,林永紅. Zn<sub><sup>2+</sup></sub>摻雜對共沉淀法制備Ce:Gd<sub>3</sub>Ga<sub>3</sub>Al<sub>2</sub>O<sub>12</sub>陶瓷粉體閃爍性能的影響[J].稀有金屬材料與工程,2020,49(3):761~768.[Qiu Zhihua, Zhang Xianhui, Wang Shuaihua, Wu Shaofan, Lin Yonghong. Effect of Zn<sub><sup>2+</sup></sub> codoping on scintillation and properties of Ce-doped Gd<sub>3</sub>Ga<sub>3</sub>Al<sub>2</sub>O<sub>12</sub> ceramic powder prepared by co-precipitation method[J]. Rare Metal Materials and Engineering,2020,49(3):761~768.]
DOI：10.12442/j. issn.1002-185X.20180995

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  • 收稿日期:2018-09-27
  • 最后修改日期:2018-10-15
  • 錄用日期:2018-11-08
  • 在線發(fā)布日期: 2020-04-08
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