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潍坊学院 化学化工与环境工程学院, 山东 潍坊 261061
Published:05 October 2022,
Received:13 June 2022,
Revised:30 June 2022,
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高祥,赵凤杰,张子龙等.近紫外光激发下KBaGd(MoO4)3∶Er3+的下转换发光及温度传感特性[J].发光学报,2022,43(10):1564-157310.37188/CJL.20220234.
GAO Xiang,ZHAO Feng-jie,ZHANG Zi-long,et al.Down-conversion Luminescence and Temperature Sensing Characters of KBaGd(MoO4)3∶Er3+ Under NUV Excitation[J].Chinese Journal of Luminescence,2022,43(10):1564-157310.37188/CJL.20220234.
高祥,赵凤杰,张子龙等.近紫外光激发下KBaGd(MoO4)3∶Er3+的下转换发光及温度传感特性[J].发光学报,2022,43(10):1564-157310.37188/CJL.20220234. DOI:
GAO Xiang,ZHAO Feng-jie,ZHANG Zi-long,et al.Down-conversion Luminescence and Temperature Sensing Characters of KBaGd(MoO4)3∶Er3+ Under NUV Excitation[J].Chinese Journal of Luminescence,2022,43(10):1564-157310.37188/CJL.20220234. DOI:
近年来,Er
3+
离子掺杂的无机发光材料被广泛应用于温度传感材料的研究。本文采用溶胶⁃凝胶法制备了Er
3+
掺杂的KBaGd(MoO
4
)
3
荧光粉,利用常温激发和发射光谱、荧光衰减曲线以及变温发射光谱对其光谱性能以及温度传感特性进行了分析。荧光光谱表明,KBaGd(MoO
4
)
3
∶Er
3+
在380 nm处有着较强的吸收峰,源自于Er
3+
离子的
4
I
15/2
→
4
G
11/2
吸收跃迁。在近紫外光激发下,KBaGd(MoO
4
)
3
∶Er
3+
荧光粉在520~570 nm之间具有两个明亮的绿色发射。由于电偶极间相互作用,当Er
3+
离子掺杂浓度超过8%时,样品发光开始出现浓度猝灭。基于荧光强度比(FIR)模型计算得到KBaGd(MoO
4
)
3
∶Er
3+
的相对灵敏度优于已报道的大部分同类温度传感材料,因此在光温传感领域有着更好的应用潜力。最后,对利用KBaGd(MoO
4
)
3
∶Er
3+
设计的LED进行了光电参数测试,并对其在照明领域的应用进行了客观评价。
In recent years, Er
3+
doped inorganic materials have been widely investigated for temperature sensing materials. In this paper, Er
3+
doped KBaGd(MoO
4
)
3
phosphor was prepared by sol-gel method. Its luminescence and temperature sensing properties were studied by room temperature excitation and emission spectra, luminescence decay curves and temperature-dependent emission spectra. The luminescence spectra show that KBaGd(MoO
4
)
3
∶Er
3+
possesses efficient absorption at 380 nm, which is attributed to the
4
I
15/2
→
4
G
11/2
transition of Er
3+
ions. Under NUV excitation, KBaGd⁃(MoO
4
)
3
∶Er
3+
exhibits two bright green emission between 520-570 nm. Due to the dipole-diploe interaction effect, the concentration quenching begins as the doping concentration of Er
3+
is beyond 8%. Based on the fluorescence intensity ratio (FIR) model, the calculated absolute sensitivity of KBaGd(MoO
4
)
3
∶Er
3+
is larger than most of the reported temperature sensing materials of the same kind, so it may has a better prospect in the field of temperature sensing. Ultimately, the photoelectric parameters of the designed LED with KBaGd(MoO
4
)
3
∶Er
3+
were recorded and its potential application in lighting field was objectively evaluated.
光学测温浓度猝灭荧光强度比温度传感
optical temperature measurementconcentration quenchingfluorescence intensity ratiotemperature sensing
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