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1.福州大学 化学学院, 福建 福州 350108
2.中国科学院 福建物质结构研究所, 中国科学院功能纳米结构设计与组装重点实验室, 福建 福州 350002
3.中国福建光电信息科学与技术创新实验室(闽都创新实验室), 福建 福州 350108
[ "岳相铭(1997-), 男, 山西忻州人, 硕士研究生, 2018年于太原理工大学获得学士学位, 主要从事光功能玻璃陶瓷的研究。E-mail:yuexiangming@fjirsm.ac.cn" ]
[ "林航(1983-), 男, 福建福州人, 博士, 研究员, 博士研究生导师, 2011年于中国科学院福建物质结构研究所获得博士学位, 主要从事光功能玻璃陶瓷的研究。E-mail:lingh@fjirsm.ac.cn" ]
[ "王元生(1961-), 男, 福建福州人, 博士, 研究员, 博士研究生导师, 1989年于中国科学技术大学获得博士学位, 主要从事光功能玻璃陶瓷的研究。E-mail:yswang@fjirsm.ac.cn" ]
收稿日期:2020-08-03,
录用日期:2020-8-25,
纸质出版日期:2020-12
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岳相铭, 林航, 林世盛, 等. La3Si6N11:Ce3+荧光玻璃陶瓷及其在高功率固态照明中的应用[J]. 发光学报, 2020,41(12):1529-1537.
Xiang-ming YUE, Hang LIN, Shi-sheng LIN, et al. La3Si6N11:Ce3+ Luminescent Glass Ceramics Applicable to High-power Solid-state Lighting[J]. Chinese journal of luminescence, 2020, 41(12): 1529-1537.
岳相铭, 林航, 林世盛, 等. La3Si6N11:Ce3+荧光玻璃陶瓷及其在高功率固态照明中的应用[J]. 发光学报, 2020,41(12):1529-1537. DOI: 10.37188/CJL.20200232.
Xiang-ming YUE, Hang LIN, Shi-sheng LIN, et al. La3Si6N11:Ce3+ Luminescent Glass Ceramics Applicable to High-power Solid-state Lighting[J]. Chinese journal of luminescence, 2020, 41(12): 1529-1537. DOI: 10.37188/CJL.20200232.
面向市场对高功率照明的强烈需求,兼具优良光学和热/化学稳定性的全无机荧光玻璃陶瓷正蓬勃发展。本文基于低温共烧技术制备了一种镶嵌La
3
Si
6
N
11
:Ce
3+
(LSN:Ce)荧光粉的硅基氮化物玻璃陶瓷荧光转换材料。研究表明,共烧时玻璃组分对LSN:Ce荧光粉侵蚀作用较小,荧光粉结构未受明显破坏,因而其荧光特性基本得以保持——量子效率为79%,150℃下荧光积分强度仅下降~14%。构建的高功率白光LED光源在350 mA电流驱动下,光效为54.8 lm/W,色温为5 712 K,显指为70.1,色坐标为(0.328 0,0.369 0)。构建的激光照明光源在0.8 W蓝光激光激发下,光通量为118.48 lm,色温为7 427 K,显指为56.2,色坐标为(0.298 2,0.322 6)。我们推断,在高功率蓝光激光激发时,LSN:Ce荧光玻璃陶瓷中发生了热饱和与光饱和现象。经进一步的材料组分、制备工艺以及器件结构优化,LSN:Ce荧光玻璃陶瓷可望应用于高功率照明领域,如汽车大灯和探照灯等。
Towards the strong market demand for high power lightings
the all-inorganic fluorescent glass ceramics with excellent optical property and thermal/chemical stability are booming. In this work
a silicon-based nitride glass ceramic fluorescent conversion material embedded with La
3
Si
6
N
11
:Ce
3+
(LSN:Ce) phosphor was prepared based on a low temperature co-sintering method. It was demonstrated that LSN:Ce phosphor was less corroded by glass components during co-sintering
with its structure showing no obvious change
and so
good luminescent properties were retained with quantum efficiency of 79% and fluorescence integral intensity decreased only by ~14% at 150 ℃. The fabricated high-power white LED lighting source yields luminous efficacy of 54.8 lm/W
CCT of 5 712 K
CRI of 70.1
and chromaticity coordinate of (0.328 0
0.369 0)
upon 350 mA current driven. The constructed laser lighting source yields luminous flux of 118.48 lm
CCT of 7427 K
CRI of 56.2
and chromaticity coordinate of (0.298 2
0.322 6)
under 0.8 W excitation power. It was speculated that the thermal and light saturation phenomena occur in LSN:Ce fluorescent glass ceramics upon high-power blue laser excitation. After further optimization of material composition
preparation process
and device structure
LSN:Ce fluorescent glass ceramics are expected to be applicable to high-power lighting fields
such as automobile headlights and searchlights
and so on.
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