Research on photoluminescence of Nd3+ doped NaYF4:Yb, Er/Tm upconversion nanoparticles

被引:0
|
作者
Ye, Shuai [1 ]
Song, Jun [1 ]
Chen, Linchun [1 ]
Wang, Dong [1 ]
Peng, Xiao [1 ]
Qu, Junle [1 ]
机构
[1] Key Laboratory of Optoelectronic Devices and System of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen,Guangdong,518060, China
来源
Guangxue Xuebao/Acta Optica Sinica | 2015年 / 35卷 / 08期
关键词
Photoluminescence - Fluorine compounds - Nanoparticles - Ytterbium compounds - Erbium compounds - Ions - Neodymium compounds - Yttrium compounds - Sodium compounds - Thulium compounds;
D O I
10.3788/AOS201535.0816005
中图分类号
学科分类号
摘要
Strong absorption of 980 nm wavelength light by biological tissues results in the limited application of Yb/Er or Yb/Tm doped NaYF4 upconversion nanoparticles. 800 nm excited NaYF4:Yb, Er/Tm nanoparticles doped with Nd3+ ions are reported. By comparing the photoluminescence spectra of different structured nanoparticles incorporated with Nd3+ ions, it is found that the emission intensity by 800 nm laser of core/shell structured NaYF4:Yb3+ 20%, Er3+ 2%@NaYF4:Nd3+ 20% nanoparticles is the highest, which is close to the emission intensity of NaYF4:Yb3+20%, Er3+ 2% nanoparticles excited by 980 nm laser. The emission intensity is enhanced by more than 600 times compared with that of NaYF4:Yb3+ 20%, Er3+ 2%, Nd3+ 20% nanoparticles. It is proved that the quench effect due to Nd incorporation is mainly related to the interaction between Nd3+ ions and the sensitizer Yb3+ ions, but not that between Nd3+ ions and the activator Er3+/Tm3+ ions. ©, 2015, Chinese Optical Society. All right reserved.
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