Synthesis and Optical Characterization of Red-Emitting BaTa2O6:Eu3+ Phosphors

Ilhan M., EKMEKÇİ M. K., Mergen A., YAMAN C.

JOURNAL OF FLUORESCENCE, cilt.26, sa.5, ss.1671-1678, 2016 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 26 Sayı: 5
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1007/s10895-016-1857-5
  • Dergi Adı: JOURNAL OF FLUORESCENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1671-1678
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

Undoped and Eu3+ doped BaTa2O6 phosphors were synthesized via solid state reaction method and characterized by using XRD, SEM-EDS and photoluminescence (PL) analyses. The XRD results revealed that the crystal structure of BaTa2O6 allowed up to 10 mol% levels of Eu3+ ions due to the TTB characteristic network of adjacent octahedrals. SEM-EDS analyses confirmed the formation of BaTa2O6 structure and EuTaO4 secondary phase. BaTa2O6:Eu3+ phosphors exhibited orange and red emissions at 592.2 nm and 615.7 nm in the visible region respectively. The Commission Internationale d'Eclairage (CIE) chromaticity coordinates of the BaTa2O6:Eu3+ phosphors that excited at lambda (ex) = 400 nm ranged from orangish-red to pinkish-red depending on increasing Eu3+ concentration.