Luminescence of Ca0.5Ba0.5Ga2S4 crystals activated by Eu2+ and Er3+ ions

Tagiev B. G., Tagiev O. B., Nagiev T., Asadullaeva S., Leonenya M. S., Yablonskii G. P., ...daha çox

Optics and Spectroscopy, vol.118, no.3, pp.389-392, 2015 (SCI-Expanded) identifier

  • Nəşrin Növü: Article / Article
  • Cild: 118 Say: 3
  • Nəşr tarixi: 2015
  • Doi nömrəsi: 10.1134/s0030400x15030200
  • jurnalın adı: Optics and Spectroscopy
  • Jurnalın baxıldığı indekslər: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Səhifə sayı: pp.389-392
  • Açıq Arxiv Kolleksiyası: Məqalə
  • Adres: Yox

Qısa məlumat

The photoluminescence (PL) in the visible spectral range of Ca0.5Ba0.5Ga2S4 solid solutions activated with ions of rare-earth elements Eu2+ and Er3+ has been studied in the temperature range of 10–300 K. The PL spectrum contains a strong luminescence band peaking at 530 nm, which is due to the 4f65d → 4f7 transitions in Eu2+ ions and weak lines in the range of 650–675 nm, which are due to the 4F9/2 → 4I15/2 transitions in Er3+ ions. The position of the PL spectrum and the total PL intensity are characterized by high temperature stability in the range of 10–300 K; the total PL intensity decreases by only 13% with respect to the maximum value at 10 K. The PL decay time and the activation energy of nonradiative recombination channels are found to be τe = 291 ns and Ea = 41 meV, respectively.