Fabrication and Upconversion Luminescent Properties of Er3+-Doped and Er3+/Yb3+ Codoped La2O2CN2 Nanofibers

被引：14
作者：
Guo, Xiaomin [1 ]
Yu, Wensheng [1 ]
Dong, Xiangting [1 ]
Wang, Jinxian [1 ]
Ma, Qianli [1 ]
Liu, Guixia [1 ]
Yang, Ming [1 ]
机构：
[1] Changchun Univ Sci & Technol, Key Lab Appl Chem & Nanotechnol Univ Jilin Prov, Changchun 130022, Peoples R China
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2015年 / 98卷 / 04期
基金：
中国国家自然科学基金;
关键词：
ELECTROSPINNING FABRICATION; NANOBELTS; NANOSTRUCTURES; GREEN;
D O I：
10.1111/jace.13466
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
La2O2CN2:Er(3+)andLa(2)O(2)CN(2):Er3+/Yb(3+)upconversion (UC) luminescence nanofibers were successfully fabricated via cyanamidation of the respective relevant La2O3:Er3+ and La2O3:Er3+/Yb3+ nanofibers which were obtained by calcining the electrospun composite nanofibers. The morphologies, structures, and properties of the nanofibers are investigated. The mean diameters of La2O2CN2:Er3+ and La2O2CN2:Er3+/Yb3+ nanofibers are 179.46 +/- 12.58nm and 198.85 +/- 17.07nm, respectively. It is found that intense green and weak red emissions around 524, 542, and 658nm corresponding to the (H11/2I15/2)-H-2-I-4, (S3/2I15/2)-S-4-I-4, and (F9/2Il5/2)-F-4-I-4 energy levels transitions of Er3+ ions are observed for La2O2CN2:Er3+ and La2O2CN2:Er3+/Yb3+ nanofibers under the excitation of a 980-nm diode laser. Moreover, the emitting colors of La2O2CN2:Er3+ and La2O2CN2:Er3+/Yb3+ nanofibers are all located in the green region. The upconversion luminescent mechanism and formation mechanism of the nanofibers are also proposed.
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页码：1215 / 1222
页数：8
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