کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1495526 | 992937 | 2010 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Enhanced phosphorescence in N contained Ba2SiO4:Eu2+ for X-ray and cathode ray tubes Enhanced phosphorescence in N contained Ba2SiO4:Eu2+ for X-ray and cathode ray tubes](/preview/png/1495526.png)
A bluish-green color long-lasting phosphorescent phosphor of N contained Ba2SiO4:Eu2+ for X-ray and cathode ray tubes are prepared with the chemical component formula Ba2SiO4:0.01Eu2+ − xSi3N4 − 2BaCO3 (x = 0.1 to 1.0) by the conventional high-temperature solid-state method. The phosphorescence and fluorescence properties as a function of Si3N4 content and temperature are investigated. The emission spectra show a single broad band peaking at 505 nm, which are ascribed to the 4f65d1 → 4f7 transition of Eu2+. Thermoluminescence (TL) glow-curves show that Ba2SiO4:0.01Eu2+ without N holds a high-temperature peak at 417 K. With increasing the content of Si3N4, the phosphorescence grows super-linearly and some new TL peaks appear at low temperatures of about 400, 355, 365, and 335 K. These peaks are ascribed to the formation of new traps related to N substitution for O.
Journal: Optical Materials - Volume 32, Issue 9, July 2010, Pages 1042–1045