Synthesis, structure and optical properties of cerium-doped calcium barium phosphate - a novel blue-green phosphor for solid-state lighting

被引：75

作者：

Komuro, Naoyuki ^{[1
]}

Mikami, Masayoshi ^{[2
]}

Shimomura, Yasuo ^{[1
]}

Bithell, Erica G. ^{[3
]}

Cheetham, Anthony K. ^{[4
]}

机构：

[1] Mitsubishi Chem Corp, Odawara, Kanagawa 2500862, Japan

[2] Mitsubishi Chem Grp Sci & Technol Res Ctr Inc, Yokohama, Kanagawa 2278502, Japan

[3] Univ Cambridge, Inst Continuing Educ, Cambridge CB23 8AQ, England

[4] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB3 0FS, England

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2015年 / 3卷 / 01期

关键词：

LUMINESCENCE; CE3+; EU2+; PHOTOLUMINESCENCE;

D O I：

10.1039/c4tc01835d

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new blue-green phosphor, Ca6BaP4O17:Ce3+, which can be prepared by conventional solid-state synthesis, is reported as a candidate phosphor for solid-state lighting with near-ultraviolet LEDs. Under excitation at around 400 nm, Ca6BaP4O17:Ce3+ shows strong blue-green emission with the peak position at 477 nm. Ce3+, Si4+ co-doping is found to enhance the luminous intensity, and the unique emission characteristics of this combination are studied and related to the crystal structure. Ca6BaP4O17 is an exceptional host material, which also accommodates Eu2+, emitting strong yellow light under 400 nm excitation. A fabricated white LED, combining Ca6BaP4O17:Ce3+, Si4+ with Ca6BaP4O17:Eu2+ and a red CaAlSiN3:Eu2+ phosphor, achieved a luminous efficacy of 45 lm W-1 with a color-rendering index of 93 around the correlated color temperature of 4500 K.

引用

页码：204 / 210

页数：7

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