[1]宁张磊,王 恒,尹婉莹,等.固相法制备Ca2-1.5xEux(WO4)2微晶及其荧光性能[J].四川师范大学学报(自然科学版),2020,43(01):79-83.[doi:10.3969/j.issn.1001-8395.2020.01.011]
 NING Zhanglei,WANG Heng,YIN Wanying,et al.Ca2-1.5xEux(WO4)2 Microcrystals:Solid-state Synthesis andTheir Luminescence Properties[J].Journal of SichuanNormal University,2020,43(01):79-83.[doi:10.3969/j.issn.1001-8395.2020.01.011]
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固相法制备Ca2-1.5xEux(WO4)2微晶及其荧光性能()
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《四川师范大学学报(自然科学版)》[ISSN:1001-8395/CN:51-1295/N]

卷:
43卷
期数:
2020年01期
页码:
79-83
栏目:
基础理论
出版日期:
2019-12-04

文章信息/Info

Title:
Ca2-1.5xEux(WO4)2 Microcrystals:Solid-state Synthesis and Their Luminescence Properties
文章编号:
1001-8395(2020)01-0079-05
作者:
宁张磊 王 恒 尹婉莹 张欣汝 高道江 毕 剑
四川师范大学 化学与材料科学学院, 四川 成都 610066
Author(s):
NING Zhanglei WANG Heng YIN Wanying ZHANG Xinru GAO Daojiang BI Jian
College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, Sichuan
关键词:
Ca2-1.5xEux(WO4)2固溶体微晶 固相合成 荧光性能 晶相结构
Keywords:
Ca2-1.5xEux(WO4)2 microcrystal solid-state synthesis luminescence properties crystal structure
分类号:
O611.4
DOI:
10.3969/j.issn.1001-8395.2020.01.011
文献标志码:
A
摘要:
采用高温固相法制备Ca2-1.5xEux(WO4)2(0≤x≤4/3)固溶体微晶,通过XRD、SEM和荧光分析等测试方法对微晶晶相结构、表面形貌和发光性能进行表征,重点探究组分x对制备微晶的微结构和发光性能的影响.结果表明:1)组分x的变化对Ca2-1.5xEux(WO4)2微晶晶相结构具有重要影响.当0≤x<1.0时,所得微
Abstract:
Ca2-1.5xEux(WO4)2(0 ≤x≤4/3)series crystallites were prepared by high-temperature solid-state method. The crystal structure, morphology and luminescent properties of the prepared microcrytals were characterized using X-ray diffraction(XRD), scanning electron microscopy(SEM)and fluorescence spectrometer(PL). The influences of component x on the microstructures and luminescence properties were discussed. The results show that: 1)The variation of component x has an important influence on the microstructure of Ca2-1.5xEux(WO4)2 microcrystallites. Within the range of x(0≤x<1.0), Ca2-1.5xEux(WO4)2 crystallites with scheelite structure have been obtained, whereas 1.0≤x≤4/3, the obtained Ca2-1.5xEux(WO4)2 crystallites have changed from tetragonal phase to monoclinic phase. 2)The variation of component x has no significant effect on the morphology and particle size of the Ca2-1.5xEux(WO4)2 crystallites. The prepared Ca2-1.5xEux(WO4)2 are spherical-like crystallites with uniform grains and the average grain size of about 0.5 μm. 3)The excitation spectra of prepared Ca2-1.5xEux(WO4)2 microcrystallines include two parts, one is a broad band locates at 200~300 nm(originated from the charge transfer of WO2-4 complex), and the other two sharp peaks at 393 nm and 464 nm are attributed to 7F05L6 and 7F05D2 transition of Eu3+ ions, respectively. All the as-prepared Ca2-1.5xEux(WO4)2 microcrystals display the two characteristic emission peaks located at 592 nm and 615 nm, which are attributed to 5D07F1 and 5D07F2 of Eu3+, respectively. When 0 ≤x<1.0, the intensities of the characteristic emission peaks initially increase with the increasing x and then decrease, given the maximum at x= 0.7.

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备注/Memo

备注/Memo:
收稿日期:2018-12-17 接受日期:2019-06-10 基金项目:国家自然科学基金(21501161)和四川省教育厅重点项目(18ZA0408) 第一作者简介:宁张磊(1984—),女,讲师,主要从事无机功能材料的研究,E-mail:zlning@sicnu.edu.cn
更新日期/Last Update: 2019-12-04