Preparation and Luminescence Properties of Glass Ceramics Precipitated With M2MgSi2O7: Eu2+ (M = Sr, Ca) Phosphor for White Light Source

被引：19

作者：

Nishiura, Shotaro ^{[1
]}

Tanabe, Setsuhisa ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Human & Environm Studies, Kyoto 6068501, Japan

来源：

IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS | 2009年 / 15卷 / 04期

关键词：

Europium; fluorescence; glass-ceramic; phosphor; white LED; LEDS;

D O I：

10.1109/JSTQE.2009.2014175

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Eu2+-doped silicate glasses were prepared in the system 42SiO(2)-gamma CaO-(38 gamma)SrO-20MgO-0.2EuO(gamma = 0, 10, 20, 30, 38) by melting under reducing atmosphere. Glass ceramics precipitated with M2MgSi2O7 : Eu2+ (M = Sr, Ca) phosphor were obtained by heat-treatment of the glass. They showed broad emission band due to the 5d -> 4f transition of Eu2+. The peak wavelength shifted from 470 to 530 nm with increasing CaO content. Their emission wavelength can be controlled by changing the compositional ratio of Ca and Sr. Their color coordinates were widely changed from blue to yellowish green region. We have successfully obtained glass ceramic phosphors with excellent durability for a high-power white LED based on near-UV LED.

引用

页码：1177 / 1180

页数：4

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