YXO4(X=Nb,V)的结构与基质发光

doi:10.7503/cjcu20190352

高等学校化学学报 ›› 2019, Vol. 40 ›› Issue (12): 2448.doi: 10.7503/cjcu20190352

• 研究论文: 无机化学 • 上一篇下一篇

YXO₄(X=Nb,V)的结构与基质发光

王洪杰²,朱重阳^1,²,张粟^1,^*(),庞然¹,姜丽宏¹,李达¹,刘贯宇¹,蔡吉泽¹,冯婧¹,李成宇^1,^*()

^1. 中国科学院长春应用化学研究所, 稀土资源利用国家重点实验室, 长春 130022
^2. 吉林建筑大学研究生学院, 长春 130118

收稿日期:2019-06-24 出版日期:2019-12-04 发布日期:2019-12-04
通讯作者: 张粟,李成宇 E-mail:zhangsu@ciac.ac.cn;cyli@ciac.ac.cn
基金资助:
国家重点研发计划项目(2016YFB0701003);中科院青年创新促进会项目资助.

Structure and Host Luminescence of YXO₄(X=Nb, V) ^†

Hongjie WANG²,Chongyang ZHU^1,²,Su ZHANG^1,^*(),Ran PANG¹,Lihong JIANG¹,Da LI¹,Guanyu LIU¹,Jize CAI¹,Jing FENG¹,Chengyu LI^1,^*()

^1. State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
^2. Graduate School of Jilin University of Architecture, Changchun 130118, China

Received:2019-06-24 Online:2019-12-04 Published:2019-12-04
Contact: Su ZHANG,Chengyu LI E-mail:zhangsu@ciac.ac.cn;cyli@ciac.ac.cn
Supported by:
? Supported by the National Key Research and Development Program of China(2016YFB0701003);the Program of Youth Innovation Promotion Association, Chinese Academy of Sciences.

摘要/Abstract

摘要：

采用高温固相法制备了一系列YNb_1-_xO₄∶xV样品, 通过连续改变Nb和V的比例获得了具有不同结构的材料. 研究发现, V$O^{3-}_{4}$与Nb$O^{3-}_{4}$基团的发光分别位于约420和400 nm处, 但是YNbO₄中掺杂少量的V ⁵⁺和YVO₄中掺杂少量的Nb ⁵⁺对发光的影响明显不同. 通过连续改变V和Nb的比例, 其发光性质并不能连续从一种发光变为另一种发光, 而是在某一组成时达到最低. 对所制备材料的结构、组成及发光变化进行了研究, 结果表明存在2种发光猝灭机理.

关键词: 钒酸钇, 褐钇铌, 基质发光, 四面体配位

Abstract:

A series of YNb_1-_xO₄∶xV samples were synthesized by high temperature solid phase method. Different structures were obtained by continuously varying the concentrations of Nb and V. It was found that the luminescence of the V$O^{3-}_{4}$ group and the luminescence of the Nb$O^{3-}_{4}$ group are located at around 420 and 400 nm. However, the small amount of V ⁵⁺ doping in YNbO₄ and the small amount of Nb ⁵⁺ doping in YVO₄ have significantly different effects on their luminescent behaviors. By continuously varying the ratio of V and Nb, the luminescent properties do not continuously change from one characteristic luminescence to another, but reach the minimum emission intensity at a certain composition. In this paper, the changes in structure, composition and luminescence were studied. The results show that there are two luminescence quenching mechanisms.

Key words: Yttrium vanadate, Fergusonite, Host emission, Tetrahedral coordination

TrendMD:

王洪杰,朱重阳,张粟,庞然,姜丽宏,李达,刘贯宇,蔡吉泽,冯婧,李成宇. YXO₄(X=Nb,V)的结构与基质发光. 高等学校化学学报, 2019, 40(12): 2448.

Hongjie WANG,Chongyang ZHU,Su ZHANG,Ran PANG,Lihong JIANG,Da LI,Guanyu LIU,Jize CAI,Jing FENG,Chengyu LI. Structure and Host Luminescence of YXO₄(X=Nb, V) ^†. Chem. J. Chinese Universities, 2019, 40(12): 2448.

图/表 11

Fig.1 Crystal structure diagrams of YVO4(A) and YNbO4(B)

Fig.2 XRD patterns(A) and part enlarged patterns(B) of samples a. JCPDS No.23-1486; b. YNbO4; c. YNb0.98O4:0.02V; d. YNb0.92O4:0.08V; e. YNb0.8O4:0.2V;f. YNb0.6O4:0.4V; g. YNb0.4O4:0.6V; h. YNb0.2O4:0.8V; i. YVO4; j. JCPDS No.17-0341.

Fig.3 XRD patterns of samples a. JCPDS No.23-1486; b. YNb0.05O4:0.95V; c. YNb0.02O4:0.98V; d. YVO4; e. JCPDS No.17-0341.

Fig.4 Raman spectra of YNb1-xO4:xV samples at room temperature a. YVO4; b. YNb0.2O4:0.8V; c. YNb0.4O4:0.6V; d. YNb0.6O4:0.4V; e. YNb0.8O4:0.2V; f. YNb0.85O4:0.15V; g. YNb0.9O4:0.1V; h. YN b 0.9 2 O4:0.08V; i. YN b 0.9 6 O4:0.04V; j. YNb0.98O4:0.02V; k. YNbO4.

Fig.5 Emission spectra of YNb1-xO4:xV excited by 257 nm ultraviolet light at room temperature x: a. 0; b. 0.01; c. 0.02; d. 0.04; e. 0.08; f. 0.1; g. 0.15; h. 0.2; i. 0.4; j. 0.6; k. 0.8; l. 1.

Fig.6 Excitation spectra of YNb1-xO4:xV under 404 nm monitoring conditions at room temperature

Fig.7 Luminescent level diagram of VO4 group in YVO4

Fig.8 Excitation spectra of YNb1-xO4:xV under 429 nm monitoring conditions at room temperature x: a. 0; b. 0.2; c. 0.4; d. 0.6; e. 0.8; f. 1.

Fig.9 Emission spectra of YNb1-xO4:xV under 322 nm ultraviolet light excitation at room temperature x: a. 0; b. 0.2; c. 0.4; d. 0.6; e. 0.8; f. 1.

Fig.10 Curve of peak intensity vs. V5+ concents at room temperature λex/nm: a. 257; b. 322.

Fig.11 Room temperature fluorescence decay curves of YXO4 with different contents

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YXO₄(X=Nb,V)的结构与基质发光

Structure and Host Luminescence of YXO₄(X=Nb, V) ^†

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