کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1494097 | 992900 | 2014 | 5 صفحه PDF | دانلود رایگان |
• Persistent luminescence of Sr3Al2O5Cl2:Tb3+ were investigated for first time.
• The filling of traps was investigated by changing the irradiation time.
• The thermoluminescence properties for Sr3Al2O5Cl2:Tb3+ was investigated in detail.
The Tb3+ doped Sr3Al2O5Cl2 phosphors have been synthesized via high temperature solid state reaction and their photoluminescence properties have been investigated. The Sr3Al2O5Cl2:Tb3+ samples emit a green luminescence from 5D4 to 7Fj (j = 6, 5, 4, 3) transition of Tb3+. The phosphorescence can be observed clearly by the naked eyes (0.32 mcd/m2) in the dark for over 1 h after 254 nm irradiation for the 5 min. Thermoluminescence (TL) measurements indicated that the TL glow curve was composed of the peaks located at 62, 142, 250 °C. The filling of traps was investigated by changing the irradiation time. Furthermore, the origin of long persistent luminescence has also been discussed.
Journal: Optical Materials - Volume 36, Issue 11, September 2014, Pages 1850–1854