Journal of Inorganic Materials ›› 2020, Vol. 35 ›› Issue (4): 447-453.DOI: 10.15541/jim20190236

Special Issue: 功能陶瓷论文精选(一):发光材料 【虚拟专辑】LED发光材料

• RESEARCH PAPER • Previous Articles     Next Articles

Modulation of Morphology and Luminescence Property of NaBiF4:Yb3+/Er3+ Upconversion Nanoparticles by Organic Ligands

SHAO Kang,WANG Tao,WEN Yingting,TENG Yuanjie,LIU Huijun,PAN Zaifa()   

  1. College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
  • Received:2019-05-20 Revised:2019-07-05 Published:2020-04-20 Online:2019-09-12
  • Supported by:
    National Natural Science Foundation of China(21804119);Key Project of National Natural Science Foundation of Zhejiang Provincial(LZ18B050002)

Abstract:

NaBiF4:Yb3+/Er3+ upconversion materials modified by different organic ligands were synthesized by solvent thermal method, and then their morphology and luminescence properties were studied. The results show that the soft template and orientation of the organic ligands can tune the particle size and morphology of the UCNPs, and the defect passivation of the surface organic ligands enhances the luminescence intensity. Especially, the cetyl trimethylammonium bromide (CTAB) and the cetyl trimethylammonium chloride (CTAC) modified materials have the most significant enhancement effect (9 times). Furthermore, the effects of temperature and pH on luminescent properties of the materials were investigated. Results show that, within the range of experimental conditions, the luminescence intensity of the materials decreases with the increase of temperature from 30 to 90 ℃ and significantly reduces under strong acid and alkaline conditions, with maximum at pH 5-6.

Key words: upconversion nanoparticles, NaBiF4:Yb3+/Er3+, organic ligand

CLC Number: