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1.山东大学 材料液固演变与加工教育部重点实验室, 山东 济南 250061
2.Department of Physics, Georgia Southern University, Statesboro, GA 30460, USA
Received:04 May 2022,
Revised:23 May 2022,
Published:05 September 2022
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梁延杰,刘景伟,闫劭等.蓝光LED激发深紫外上转换发光材料的光学定位与追踪应用[J].发光学报,2022,43(09):1436-1445.
LIANG Yan-jie,LIU Jing-wei,YAN Shao,et al.Blue LED-excitable Deep Ultraviolet Upconversion Phosphor for Optical Locating and Tracking Application[J].Chinese Journal of Luminescence,2022,43(09):1436-1445.
梁延杰,刘景伟,闫劭等.蓝光LED激发深紫外上转换发光材料的光学定位与追踪应用[J].发光学报,2022,43(09):1436-1445. DOI: 10.37188/CJL.20220177.
LIANG Yan-jie,LIU Jing-wei,YAN Shao,et al.Blue LED-excitable Deep Ultraviolet Upconversion Phosphor for Optical Locating and Tracking Application[J].Chinese Journal of Luminescence,2022,43(09):1436-1445. DOI: 10.37188/CJL.20220177.
光发射波长小于320 nm的深紫外发光材料具有光子能量高和不受室内环境光干扰等特性,在光化学与光医学领域具有重要应用前景,近年来受到国内外学者的广泛关注。本文利用固相合成法制备了Pr
3+
单掺和Pr
3+
⁃Gd
3+
共掺的LiYSiO
4
∶Pr
3+
和Li(Y,Gd)SiO
4
∶Pr
3+
深紫外上转换发光材料。在450 nm蓝光(激光或LED)激发下分别实现了C区紫外和窄带B区紫外上转换发光,发光峰值分别位于280 nm和313 nm。系统研究了蓝光激发功率对深紫外上转换发光性能的影响规律,证实了蓝光激发下的双光子上转换发光物理机制。探索利用LiYSiO
4
∶Pr
3+
作为光转换层,以蓝光LED作为激发源,设计构筑了新型荧光转换型UVC光源,并展示了该光源在室外光学定位与追踪领域的应用。
Deep ultraviolet(UV) luminescent materials with emission wavelength shorter than 320 nm have great potential for photochemistry and photomedicine because of the unique spectral features of UV light including high-energy photon and interference-free by indoor ambient light, which have aroused significant attention in the past few years. In this paper, we have synthesized deep UV emissive LiYSiO
4
∶Pr
3+
and Li(Y,Gd)SiO
4
∶Pr
3+
phosphors by doping Pr
3+
and Pr
3+
-Gd
3+
ion pairs into LiYSiO
4
host. Upon 450 nm blue light(laser or LED) excitation, these phosphors can emit light in the ultraviolet C and narrowband ultraviolet B through photon upconversion. The deep UV upconversion luminescence properties were investigated in detail by varying the excitation power of 450 nm blue laser, indicating that two-photon upconversion luminescence process is responsible for the deep UV emission. Deep UV light source has been successfully created through a combination of LiYSiO
4
∶Pr
3+
phosphor as luminescence converter and 450 nm LED as excitation source, which shows promising application in the optical locating and tracking field.
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