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1.福州大学 化学学院, 福建 福州 350002
2.中国科学院 福建物质结构研究所, 福建 福州 350002
3.福建省光电信息科技创新实验室, 福建 福州 350108
[ "周泽华(1995-),男,江西南昌人,硕士研究生,2019年于南昌大学获得学士学位,主要从事荧光陶瓷的研究。Email: zhouzehua@fjirsm.ac.cn " ]
[ "黄集权(1980-),男,福建漳州人,博士,研究员,2011年于中国科学院获得博士学位,主要从事光催化材料及LED荧光材料的研究。 E-mail: hjq@fjirsm.ac.cn" ]
[ "郭旺(1979-),男,安徽淮南人,博士,研究员,2017年于中国人民大学获得博士学位,主要从事激光透明陶瓷、荧光陶瓷、LED/LD封装、稀土氧化物红外窗口陶瓷的研究。 E-mail: guowang@fjirsm.ac.cn" ]
收稿日期:2022-06-21,
修回日期:2022-07-08,
纸质出版日期:2022-12-05
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周泽华,黄集权,陈剑等.Ga3+、Sc3+掺杂LuAG∶Ce3+透明陶瓷的荧光性能[J].发光学报,2022,43(12):1928-1937.
ZHOU Ze-hua,HUANG Ji-quan,CHEN Jian,et al.Analysis of Ga3+/Sc3+ Substitution on Luminescence Property of LuAG∶Ce3+ Transparent Ceramics[J].Chinese Journal of Luminescence,2022,43(12):1928-1937.
周泽华,黄集权,陈剑等.Ga3+、Sc3+掺杂LuAG∶Ce3+透明陶瓷的荧光性能[J].发光学报,2022,43(12):1928-1937. DOI: 10.37188/CJL.20220248.
ZHOU Ze-hua,HUANG Ji-quan,CHEN Jian,et al.Analysis of Ga3+/Sc3+ Substitution on Luminescence Property of LuAG∶Ce3+ Transparent Ceramics[J].Chinese Journal of Luminescence,2022,43(12):1928-1937. DOI: 10.37188/CJL.20220248.
LuAG∶Ce
3+
是一种高效稳定的商业化绿色荧光转换材料。我们采用真空烧结方法制备了一系列掺杂Ga
3+
/Sc
3+
的LuAG∶Ce
3+
透明陶瓷样品,并研究了掺杂离子及掺杂浓度对其晶体结构、荧光性能及热稳定性能的影响。在450 nm蓝光激发下,Ga
3+
和Sc
3+
的掺杂均使LuAG∶Ce
3+
的发射谱发生蓝移。其中,Ga
3+
离子具有更好的蓝移效果,在掺杂浓度从0%提升至20%时,发射光谱从536 nm蓝移至506 nm。与此同时,两种离子掺杂均降低了绿光陶瓷的热稳定性能。但通过变温发射谱及量子产率表征发现,Ga
3+
离子对陶瓷热性能的影响比Sc
3+
离子的小。将两个系列的陶瓷样品封装在3 W的蓝光LED芯片上,获得了具有不同光色的绿光光源。其中,Ga
3+
系列陶瓷展现出了更优异的光色可调性,并且维持着更高的光效。综上,我们认为Ga
3+
离子掺杂的LuAG∶Ce
3+
陶瓷是一种具有较大潜力的绿色荧光转换材料。
LuAG∶Ce
3+
is an efficient and stable commercial green phosphor-converted material. Two series of Lu
3
Al
5-
x
M
x
O
12
∶Ce
3+
transparent ceramics(TCs) doped with Ga
3+
/Sc
3+
ions were fabricated by vacuum sintering. The effects of doping ions and their concentration on crystal structure, fluorescence properties, and thermal stability were investigated. Both Ga
3+
and Sc
3+
doped LuAG∶Ce
3+
samples exhibit a blue-shift under 450 nm blue light excitation. Significantly, Ga
3+
doped samples have more effective spectral modulation, and the emission spectrum shifts from 536 nm to 506 nm when Ga
3+
concentration increases from 0% to 20%. Meanwhile, it is found from temperature-dependence spectrum and quantum yield characterization that Ga
3+
doped ions have less impact on thermal stability of LuAG∶Ce
3+
ceramics. By encapsulating the ceramic samples on 3 W blue LED chips, green light sources with various spectra were obtained. Among them, Ga
3+
doped LuAG∶Ce
3+
samples show better color tunability and maintain higher light efficiency. In summary, Ga
3+
doped LuAG∶Ce
3+
ceramic is a promising green phosphor-converted material.
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