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1.江苏大学 材料科学与工程学院, 江苏 镇江 212013
2.中国科学院上海硅酸盐究所 透明陶瓷研究中心, 上海 201899
3.中国科学院大学 材料科学与光电工程中心, 北京 100049
Published:05 June 2023,
Received:31 December 2022,
Revised:30 January 2023,
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黄新友,王雁斌,程梓秋等.高亮度固态照明用LuYAG∶Ce荧光陶瓷[J].发光学报,2023,44(06):964-974.
HUANG Xinyou,WANG Yanbin,CHENG Ziqiu,et al.LuYAG∶Ce Transparent Ceramic Phosphors for High-brightness Solid-state Lighting Application[J].Chinese Journal of Luminescence,2023,44(06):964-974.
黄新友,王雁斌,程梓秋等.高亮度固态照明用LuYAG∶Ce荧光陶瓷[J].发光学报,2023,44(06):964-974. DOI: 10.37188/CJL.20220435.
HUANG Xinyou,WANG Yanbin,CHENG Ziqiu,et al.LuYAG∶Ce Transparent Ceramic Phosphors for High-brightness Solid-state Lighting Application[J].Chinese Journal of Luminescence,2023,44(06):964-974. DOI: 10.37188/CJL.20220435.
实现高发光效率、高亮度和良好的热稳定性是固态照明的迫切要求。因此,用于高功率发光二极管或激光二极管(LED/LD)的高性能荧光转换材料具有重要的研究意义。在这项工作中, 通过将Lu
3+
离子引入YAG∶Ce荧光陶瓷中方法作为有效策略来改善YAG∶Ce荧光材料的发光性能。采用固相反应和真空烧结法制备了不同Lu
3+
含量的(Lu,Y)
3
Al
5
O
12
∶Ce荧光陶瓷(LuYAG∶Ce荧光陶瓷)。随着Lu
3+
含量的增加,LuYAG∶Ce荧光陶瓷中的Y
3+
位点被Lu
3+
位点取代,Ce
3+
的发射峰呈现从573 nm到563 nm的蓝移现象。当Lu
3+
含量为60%时,通过将LuYAG∶Ce荧光陶瓷与蓝光LED组合,其发光强度达到最大值,流明效率达到114 lm∙W
-1
。使用450 nm激光源与LuYAG∶Ce荧光陶瓷构建了透射模式下的激光驱动照明装置。随着功率密度从2.2 W·mm
-2
增加到39 W·mm
-2
,Lu
3+
含量为60%的荧光陶瓷光通量从128 lm增加到1 874 lm,且没有发光饱和的迹象,最佳发光效率达到128 lm·W
-1
。因此,LuYAG∶Ce荧光陶瓷有望成为高功率LED/LD照明的潜在荧光转换材料。
Achieving high luminous efficiency, high brightness and good thermal stability is an urgent requirement for solid-state lighting. Therefore, the high-performance color converters for high-power light-emitting diodes or laser diodes (LEDs/LDs) are significant to be explored. In this work, an effective strategy to improve the luminescent properties of YAG∶Ce color converters through method of component regulation was realized in YAG∶Ce transparent ceramic phosphors(TCPs) by incorporating Lu
3+
ions. We prepared (Lu,Y)
3
Al
5
O
12
∶Ce TCPs(LuYAG∶Ce TCPs) with different Lu
3+
contents by the solid-state reaction and vacuum sintering method. With the increase of Lu
3+
content, the Y
3+
sites in LuYAG∶Ce TCPs were substituted by Lu
3+
sites, and the emission peaks of Ce
3+
were blue-shifted from 573 nm to 563 nm. When the Lu
3+
content was 60%, the emission intensity reached the maximum value and the luminous efficiency reached 114 lm∙W
-1
by combining the LuYAG∶Ce TCPs with a blue LED. A 450 nm laser source was used to construct a laser-driven lighting device in a transmission mode. As the power density increased from 2.2 W·mm
-2
to 39 W·mm
-2
, the luminous flux of the TCP with 60% Lu
3+
substitution increased from 128 lm to 1 874 lm with no signs of luminescence saturation and the optimum luminous efficiency reached 128 lm·W
-1
. Thus, the LuYAG∶Ce TCPs are expected to be potential color conversion materials for high-power LEDs/LDs lighting.
(Lu,Y)3Al5O12∶Ce荧光陶瓷固态照明荧光转换材料高亮度
(Lu,Y)3Al5O12∶Ce transparent ceramic phosphors(TCPs)solid-state lightingcolor conversion materialshigh-brightness
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