Luminescence and afterglow in Sr2SiO4:EU2+ , RE3+ [RE = Ce, Nd, Sm and Dy] phosphors-Role of co-dopants in search for afterglow

作者：Lakshminarasimhan N^*; Varadaraju U V

来源：Materials Research Bulletin, 2008, 43(11): 2946-2953.

DOI：10.1016/j.materresbull.2007.12.005

• Ceramics
• Oxides
• Optical materials
• X-ray diffraction
• Luminescence

Luminescence of Eu2+ in Sr2SiO4:EU2+, RE3+ [RE = Ce, Nd, Sm, and Dy] phosphors was studied with a view to obtain an afterglow phosphor. The synthesized phosphors were characterized by powder X-ray diffraction (XRD), diffuse reflectance, photo and thermoluminescence spectroscopic techniques. Afterglow was observed only with Dy3+ co-doped phosphor. The observed afterglow with Dy3+ co-doping originated from the formation of suitable traps which was supported by thermoluminescence results.

• 出版日期2008-11-3