Emerging La2O2CN2 matrix with controllable 3D morphology for photoluminescence applications

被引：5

作者：

Bai, Huayu ^{[1
]}

Song, Yan ^{[1
]}

Li, Dan ^{[1
]}

Ma, Qianli ^{[1
]}

Dong, Xiangting ^{[1
]}

Yu, Wensheng ^{[1
]}

Yang, Ying ^{[1
]}

Yu, Hui ^{[1
]}

Wang, Jinxian ^{[1
]}

Liu, Guixia ^{[1
]}

机构：

[1] Changchun Univ Sci & Technol, Key Lab Appl Chem & Nanotechnol Univ Jilin Prov, Changchun 130022, Jilin, Peoples R China

来源：

CRYSTENGCOMM | 2017年 / 19卷 / 43期

基金：

中国国家自然科学基金;

关键词：

UP-CONVERSION LUMINESCENCE; HYDROTHERMAL SYNTHESIS; CRYSTAL-STRUCTURES; PHOSPHORS; PR; SM; CRYSTALLIZATION; NANOPARTICLES; DESIGN; GREEN;

D O I：

10.1039/c7ce01418j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

La2O2CN2 and La2O2CN2:RE3+ (RE = Eu, Dy, Tb, Tm, and Yb/Er) complexes with special morphologies, having uniform rod-like, umbrella-like, cauliflower-like and mushroom-like microarchitectures, have been successfully synthesized by combining a simple hydrothermal route with cyanamidation technology. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectra (EDX), and photoluminescence (PL) spectra were used to characterize the samples. The morphology regulation of the products was realized via simply adjusting a series of experimental parameters, including sodium citrate amount, reaction temperature and pH value of the initial solution; the growth mechanisms have been proposed. Under ultraviolet light excitation, the as-obtained La2O2CN2:RE3+ (RE = Eu, Dy, Tb, Tm) products successfully exhibit downconversion emissions showing different fluorescence colors based on the characterized transitions of different rare earth ions. Additionally, upon 980 nm laser excitation, La2O2CN2: Yb/Er phosphors have strong upconversion emissions. La2O2CN2 microstructures are therefore excellent matrixes, and the as-synthesized La2O2CN2:RE3+ samples have potential applications in fluorescent lamps, field emission displays, biological labeling and catalysis.

引用

页码：6498 / 6505

页数：8

共 34 条

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