Synthesis and Luminescence Properties of Novel Ce3+- and Eu2+-Doped Lanthanum Bromothiosilicate La3Br(SiS4)2 Phosphors for White LEDs

被引：62

作者：

Lee, Szu-Ping ^{[1
,2
]}

Liu, Shuang-De ^{[1
,2
]}

Chan, Ting-Shan ^{[3
]}

Chen, Teng-Ming ^{[1
,2
]}

机构：

[1] Natl Chiao Tung Univ, Dept Appl Chem, Phosphors Res Lab, Hsinchu 30010, Taiwan

[2] Natl Chiao Tung Univ, Inst Mol Sci, Hsinchu 30010, Taiwan

[3] Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan

来源：

ACS APPLIED MATERIALS & INTERFACES | 2016年 / 8卷 / 14期

关键词：

thiosilicate phosphor; rare-earth activator; luminescence; light emitting diodes; solid-state lighting; EMITTING PHOSPHOR; ENERGY-TRANSFER; YELLOW; TEMPERATURE; RED; THIOSILICATES; EMISSION; BLUE; LA; UV;

D O I：

10.1021/acsami.5b12125

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Novel Ce3+- and Eu2+-doped lanthanum bromothiosilicate La3Br(SiS4)(2):Ce3+ and La3Br(SiS4)(2):Eu2+ phosphors were prepared by solid-state reaction in an evacuated and sealed quartz glass ampule. The La3Br(SiS4)(2):Ce3+ phosphor generates a cyan emission upon excitation at 375 nm, whereas the La3Br(SiS4)(2):Eu2+ phosphor could be excited with extremely broad range from UV to blue region (300 to 600 nm) and generates a reddish-orange broadband emission centered at 640 nm. In addition, thermal luminescence properties of La3Br(SiS4)(2):Ce3+ and La3Br(SiS4)(2):Eu2+ phosphors from 20 to 200 degrees C were investigated. The combination of a 450 nm blue InGaN-based LED chip with the red-emitting La3Br(SiS4)(2):Eu2+ phosphor, and green-emitting BOSE:Eu2+ commercial phosphor produced a warm-white light with the CRI value of similar to 95 and the CCT of 5,120 K. Overall, these results show that the prepared phosphors may have potential applications in pc-WLED.

引用

页码：9218 / 9223

页数：6

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