Preparation and characterization of Sr4Al2O7:Eu3+, Eu2+ phosphors

作者：Kim Sue Jin; Won Hyung Il^*; Hayk Nersisyan; Won Chang Whan; Jeon Duk Young; Kirakosyan Artavazd G

来源：Materials Science and Engineering B-Solid State Materials for Advanced Technology, 2011, 176(18): 1521-1525.

DOI：10.1016/j.mseb.2011.09.014

• Phosphor
• Sr4Al2O7
• Luminescent property

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 degrees C and that a Sr3Al2O6 phase is formed as the main peak below 1300 degrees 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.

• 出版日期2011-11-15