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浙江大学 材料科学与工程学院, 浙江 杭州 310027
Published:05 December 2022,
Received:10 July 2022,
Revised:24 July 2022,
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王长建,乔旭升,樊先平.蓝光LED激发Cr3+掺杂宽带近红外荧光粉研究进展[J].发光学报,2022,43(12):1855-1870.
WANG Chang-jian,QIAO Xu-sheng,FAN Xian-ping.Research Progress on Blue LED Excited Cr3+ Doped Phosphors with Broad-band Near-infrared Luminescence[J].Chinese Journal of Luminescence,2022,43(12):1855-1870.
王长建,乔旭升,樊先平.蓝光LED激发Cr3+掺杂宽带近红外荧光粉研究进展[J].发光学报,2022,43(12):1855-1870. DOI: 10.37188/CJL.20220271.
WANG Chang-jian,QIAO Xu-sheng,FAN Xian-ping.Research Progress on Blue LED Excited Cr3+ Doped Phosphors with Broad-band Near-infrared Luminescence[J].Chinese Journal of Luminescence,2022,43(12):1855-1870. DOI: 10.37188/CJL.20220271.
宽带近红外光源可广泛应用于非侵入式探测、军事侦查、食品检测、医疗成像等领域。采用近红外(NIR)荧光粉和蓝光LED芯片组合成荧光转换发光二级管,作为NIR光源,具有技术成熟、结构紧凑、成本低等优点。本文综述了蓝光LED激发 Cr
3+
掺杂宽带近红外荧光粉研究进展。首先,回顾了Cr
3+
发光的晶体场理论,并根据材料体系梳理了近来报道的 Cr
3+
掺杂近红外荧光粉;其次,鉴于近红外荧光粉在光谱范围、耐温性、输出功率、电光转化效率等方面依旧存在不足,总结了在机理上优化光谱学性能、改善热猝灭性能和电光转换效率的研究工作;最后,较全面地总结了Cr
3+
掺杂NIR荧光粉的器件化应用研究进展。
Broad-spectrum near-infrared light sources have a wide range of applications in non-invasive detection, military surveillance, food inspection, medical imaging,
etc
. In practical applications, a near-infrared(NIR) phosphor and a blue LED chip are used to form a fluorescent conversion light-emitting diode. As a NIR light source, it has the advantages of mature technology, compact structure and low cost. In this paper, the research progress of Cr
3+
doped near-infrared phosphors excited by blue LEDs is reviewed. First, the crystal field theory of Cr
3+
luminescence is briefly introduced, and the recently reported Cr
3+
doped near-infrared phosphors are sorted out according to the material system. Secondly, in view of the shortcomings of near-infrared phosphors in terms of spectral range, temperature resistance, output power, electro-optical conversion efficiency,
etc
., the existing research work from related mechanisms to optimize spectral performance, improve thermal quenching performance and electro-optical conversion efficiency is summarized. Finally, the researches on the device application of NIR light source are comprehensively summarized and compared.
Cr3+离子近红外荧光粉蓝光激发发光量子效率电光转化效率
Cr3+ ionnear-infrared phosphorblue light excitationluminescence quantum efficiencyelectro-optical conversion efficiency
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