Synthesis and Characterizations of Mesoporous YVO4: Eu3+@SiO2

3rd International Conference on New Material and Chemical Industry

材料科学;化学工业

Li, S.W.^1 ; Liu, Y.F.^1

College of Science, Changchun Institute of Technology, Changchun

130012, China^1

关键词: Characteristic emission;    Fluorescence lifetimes;    In-situ synthesis;    Ordered mesoporous structures;    Photoluminescence efficiency;    Photoluminescence properties;    Soft template methods;    Synthesis and characterizations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/479/1/012118/pdf
DOI  :  10.1088/1757-899X/479/1/012118

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The mesoporous YVO4: Eu3+@SiO2 was synthetized by combination of in-situ synthesis with soft template method. At the same time, the mesoporous SiO2 and YVO4: Eu3+ nanocrystal were also synthesized. The structure, morphologies, UV - vis spectra, photoluminescence properties and fluorescence lifetimes were studied systemically. And the photoluminescence property of mesoporous YVO4: Eu3+@SiO2 was studied comparing with YVO4: Eu3+ nanocrystal. The results showed that the mesoporous YVO4: Eu3+@SiO2 possessed highly ordered mesoporous structure. The intrinsic excitation bands of Eu3+ disappear. Under excited VO4 3+, the characteristic emission of Eu3+ ions was obtained in the mesoporous YVO4: Eu3+@SiO2. The lifetimes of Eu3+ become short in the mesoporous YVO4: Eu3+@SiO2. The photoluminescence efficiency of mesoporous YVO4: Eu3+@SiO2 was higher than that of the YVO4: Eu3+ nanocrystal.