Title of article
Preparation and characterization of Sr4Al2O7:Eu3+, Eu2+ phosphors
Author/Authors
Kim، نويسنده , , Sue Jin and Won، نويسنده , , Hyung Il and Hayk، نويسنده , , Nersisyan and Won، نويسنده , , Chang Whan and Jeon، نويسنده , , Duk Young and Kirakosyan، نويسنده , , Artavazd G.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2011
Pages
5
From page
1521
To page
1525
Abstract
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.
Keywords
Phosphor , Sr4Al2O7 , luminescent property
Journal title
MATERIALS SCIENCE & ENGINEERING: B
Serial Year
2011
Journal title
MATERIALS SCIENCE & ENGINEERING: B
Record number
2148801
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