Acta Phys. -Chim. Sin. ›› 2013, Vol. 29 ›› Issue (09): 2056-2061.doi: 10.3866/PKU.WHXB201307091

• PHOTOCHEMISTRY AND RADIATION CHEMISTRY • Previous Articles     Next Articles

Enhanced Photoluminescence Properties of CaF2 in CaO-CaF2-B2O3-SiO2 Glass Doped with Sm2O3

QIAO Yin-Po, YIN Hai-Rong, ZHANG Yan-Bin, PAN Yun-Juan, QIAO Lu, LIU Ting   

  1. School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, P. R. China
  • Received:2013-01-31 Revised:2013-07-08 Published:2013-08-28
  • Contact: QIAO Yin-Po E-mail:ypqiao@sust.edu.cn
  • Supported by:

    The project was supported by China Postdoctoral Science Foundation Funded Project (20110491640), Scientific Research ProgramFunded by Shaanxi Provincial Education Department, China (11JK0839), Scientific Research Initial Funding of Shaanxi University of Science and Technology, China (BJ10-11), and Training Programs of Innovation and Entrepreneurship of Shaanxi University of Science and Technology, China (201310708008, 201210708011).

Abstract:

Aseries of luminescent glass composed of CaO-CaF2-B2O3-SiO2 doped with samariumoxide (CFBS: Sm) were prepared. The structure, infrared transmittance and fluorescent properties of the samples were investigated by X-ray diffraction (XRD), Fourier transforminfrared (FTIR) spectroscopy and photoluminescence (PL) measurements, respectively. The XRD patterns of the CFBS:S msamples showed that the glass matrix had a non-crystalline structure, while the FTIR spectra exhibited shifts of absorption wavelength sensitive to the structure and function of the samples. The PL spectra of the CFBS:Smglasses showed the characteristic emission of Sm3+ centered at 566, 603 and 650 nmunder 404 nmexcitation, and their luminescence color was red-orange (x=0.531, y=0.371). Furthermore, the intensity of emission and fluorescent lifetime of Sm3+ at 603 nm (4G5/2) increased with the molar ratio of CaF2 in the glass samples. The enhanced intensity of emission, fluorescent lifetime and quantumefficiency with increasing molar ratio of CaF2 may result fromthe reduction of phonon energy in the CFBS:S mglass because some CaF2 substitutes CaO in the glass matrix.

Key words: Rare earth doped, Luminescent glass, Calciumfluoride, Photoluminescence, Fluorescent life, Quantumefficiency

MSC2000: 

  • O644