Structural and Luminescence Properties of Sm3+ Doped TTB -Type BaTa2O6 Ceramic Phosphors

EKMEKÇİ M. K., Ilhan M., BAŞAK A. S., DENİZ S.

JOURNAL OF FLUORESCENCE, cilt.25, sa.6, ss.1757-1762, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 25 Sayı: 6
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1007/s10895-015-1663-5
  • Dergi Adı: JOURNAL OF FLUORESCENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1757-1762
  • Anahtar Kelimeler: TTB-type BaTa2O6, Photoluminescence, Solid state reaction, CRYSTAL-CHEMISTRY, PHASE
  • Marmara Üniversitesi Adresli: Evet

Özet

Pure and 0.5 to 10 mole% Sm3+ doped TTB (tetragonal tungsten bronze)-type BaTa2O6 ceramic phosphor was produced by the solid state reaction method which performed at 1425 A degrees C for 20 h. XRD and SEM analysis indicated single TTB phase for undoped and 0.5 to 10 mole% Sm3+ doped BaTa2O6 structures. SEM also showed that the BaTa2O6 grain size decreased with the increasing content of Sm3+. Optical analysis indicated significant emissions in the visible spectral region as green (lambda = 562.7 nm) and orange-reddish (lambda = 597.1 nm). The emission intensity increased with the increasing doping concentration up to 2.5 mole%, and then decreased due to the concentration quenching effect.