Acta Optica Sinica, Volume. 32, Issue 2, 216001(2012)
Optical Properties of Eu2+-Dy3+ Co-Doped SrSiO3 Transparent Glass Ceramics
Eu2+-Dy3+ co-doped silicates glass was prepared by high temperature melting under reducing atmosphere. And the Eu2+-Dy 3+ co-doped SrSiO3 transparent glass ceramics are obtained after heat treatment. The samples′ excitation spectrum and emission spectrum are measured. The glass ceramics′ luminescence properties with different amount of substance ratio of Eu2+-Dy3+ are studied, and the corresponding chromaticity coordinates are calculated. A broad emission band region in 400~550 nm(green light) due to the 5d→4f transitions of Eu2+ is observed, as well as several sharp emission peaks at 483 nm (blue light) and 575 nm (yellow light) due to the 4F9/2→6H15/2 and 4F9/2→6H13/2 transitions of Dy3+. The ultraviolet light-emitting diode (UV-LED) excitable glass ceramics emitting white light are obtained by controlling the amount of substance ratio of Eu2+-Dy3+. When the amount of substance ratio of Eu2+-Dy3+ is 1∶8, the Eu2+-Dy3+ co-doped glass ceramics get the optimal white light emission and the corresponding chromaticity coordinate (0.268,0.356) exactly falls into the white light area of the CIE-1931 chromaticity diagram. The results indicate that the Eu2+-Dy3+ co-doped SrSiO3 transparent glass ceramics can be used as a potential matrix material for white light emitting diode.
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Cui Zhiguang, Ye Renguang, Deng Degang, Zhao Shilong, Wang Huanping, Ma Hongping, Xu Shiqing. Optical Properties of Eu2+-Dy3+ Co-Doped SrSiO3 Transparent Glass Ceramics[J]. Acta Optica Sinica, 2012, 32(2): 216001
Category: Materials
Received: Aug. 23, 2011
Accepted: --
Published Online: Jan. 6, 2012
The Author Email: Zhiguang Cui (cuizhiguang@yahoo.com)