کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1529132 | 995738 | 2011 | 5 صفحه PDF | دانلود رایگان |
A new composition of red strontium aluminate phosphor (Sr4Al2O7:Eu3+, Eu2+) is synthesized using a solid state reaction method in air and in a reducing atmosphere. The investigation of firing temperature indicates that a single phase of Sr4Al2O7 is formed when the firing temperature is higher than 1300 °C and that a Sr3Al2O6 phase is formed as the main peak below 1300 °C. The effects of firing temperature and doping concentration on luminescent properties are investigated. Sr4Al2O7 phosphors exhibit the typical red luminescent properties of Eu3+ and Eu2+. A comparison photoluminescence study with Sr3Al2O6 phosphor shows that Sr4Al2O7 has higher emission intensity than Sr3Al2O6 as a result of the higher optimum doping concentration of Sr4Al2O7 phosphor.
► A new composition of strontium aluminate phosphor (Sr4Al2O7:Eu3+, Eu2+) is synthesized using a solid state reaction method.
► Sr4Al2O7 phosphors exhibit the typical red luminescent properties of Eu3+ and Eu2+.
► Sr4Al2O7 has higher emission intensity than Sr3Al2O6 as a result of the higher optimum doping concentration of Sr4Al2O7 phosphor.
Journal: Materials Science and Engineering: B - Volume 176, Issue 18, 15 November 2011, Pages 1521–1525