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

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istinad üçün kopyala

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

OPTICS AND SPECTROSCOPY, vol.118, pp.389-392, 2015 (SCI-Expanded)

• Nəşrin Növü: Article / Article
• Cild: 118
• 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
• 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 4f ⁶5d → 4f ⁷ transitions in Eu²⁺ ions and weak lines in the range of 650–675 nm, which are due to the ⁴ F 9/2 → ⁴ I 15/2 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 τ e = 291 ns and E a = 41 meV, respectively.