Journal of Inorganic Materials ›› 2016, Vol. 31 ›› Issue (10): 1081-1086.DOI: 10.15541/jim20160122

• Orginal Article • Previous Articles     Next Articles

Preparation and Down-conversion Luminescent Properties of Tb3+, Yb3+ Co-doped Sr2B2O5

DAI Zhi-Gang1, LI You-Fen1,2, LI Gang1, YANG Ru1,2   

  1. (1. Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, China; 2. Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China)
  • Received:2016-03-07 Revised:2016-05-11 Published:2016-10-20 Online:2016-09-23
  • About author:DAI Zhi-Gang. E-mail: gr_orange@163.com
  • Supported by:
    National Natural Science Foundation of China (51372012)

Abstract:

Tb3+ and Yb3+ co-doped Sr2B2O5 phosphors were synthesized by conventional solid-state reactions. The obtained Sr2B2O5: Tb3+, Yb3+ phosphors were characterized by X-ray diffraction (XRD) and photoluminescence (PL) spectra. XRD results show that all prepared phosphors can be readily indexed to pure monoclinic phase of Sr2B2O5. The dominant excitation at 374 nm was observed among three strong excitation peaks located at 354, 374 and 487 nm monitored at 543 nm and 980 nm, by which Sr2B2O5 phosphors could be considered as having a strong absorption in the near ultraviolet region of sunlight. Under the ultraviolet light excitation at 374 nm, the strong intensity of visible emission from Tb3+: 5D47FJ ( J = 6, 5, 4, 3), and near-infrared (NIR) emission from Yb3+ (2F5/22F7/2) were detected. The relationship between the luminescence spectra and Yb3+ doping content demonstrated the monoclinic Sr2B2O5 exhibited the excellent quenching concentration.

Key words: Sr2B2O5, Yb3+, Tb3+, down-conversion, luminescent material

CLC Number: