Luminescence concentration quenching of Pb2+ single doped and Pb2+/Dy3+ co-doped strontium tetraborate phosphor

YILDIZ E., ERDOĞMUŞ E.

JOURNAL OF LUMINESCENCE, cilt.204, ss.1-4, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 204
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.jlumin.2018.07.007
  • Dergi Adı: JOURNAL OF LUMINESCENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1-4
  • Anahtar Kelimeler: Photoluminescence, SrB4O7, Pb2+, Dy3+, PHOTOLUMINESCENCE PROPERTIES, OPTICAL-PROPERTIES, EMITTING PHOSPHOR, SPECTRA
  • Yozgat Bozok Üniversitesi Adresli: Evet

Özet

In this study, synthesis and photoluminescence properties of SrB4O7:Pb2+ and SrB4O7:Pb2+, Dy3+ phosphors were investigated. The phases of the synthesized phosphors were determined by X-ray powder diffraction (XRD). Fourier transform infrared (FTIR) analysis confirmed the formation of SrB4O7. The excitation and emission spectra of the synthesized phosphors were analyzed using a spectrofluorometer at room temperature. The dependence of emission intensity on the Pb2+ concentration for Sr1-xPbxB4O7 and Dy3+ concentration for Sr0.985-xPb0.015DyxB4O7 were studied in detail. It was observed that the optimum concentrations of Pb2+ in SrB4O7 and Dy3+ in SrB4O7:Pb2+ are 0.015 and 0.02 mol, respectively. The Stokes shift of SrB4O7: Pb2+ was calculated to be 8500 cm(-1).