Cr3+-Doped Broadband NIR Garnet Phosphor with Enhanced Luminescence and its Application in NIR Spectroscopy

doi:10.1002/adom.201900185

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	Cr3+-Doped Broadband NIR Garnet Phosphor with Enhanced Luminescence and its Application in NIR Spectroscopy
	L.L.Zhang; D.D.Wang; Z.D.Hao; X.Zhang; G.H.Pan; H.J.Wu; J.H.Zhang
	2019
Source Publication	Advanced Optical Materials
ISSN	2195-1071
Volume	7 Issue:12 Pages:8
Abstract	Broadband near-infrared (NIR) phosphor-converted light emitting diode (pc-LED) is demanded for wearable biosensing devices, but it suffers from low efficiency and low radiance. This study reports a broadband NIR Ca3-xLuxHf2Al2+xSi1-xO12:Cr3+ garnet phosphor with emission intensity enhanced by 81.5 times. Chemical unit co-substitution of [Lu3+-Al3+] for [Ca2+-Si4+] is responsible for the luminescence enhancement and further alters the crystal structure and electronic properties of the garnet. Using the optimized phosphor, a NIR pc-LED with photoelectric efficiencies of 21.28%@10 mA, 15.75%@100 mA and NIR output powers of 46.09 mW@100 mA, 54.29 mW@130 mA is fabricated. The high power NIR light is observed to penetrate upper arms (approximate to 8 cm). For application in NIR spectroscopy, the NIR pc-LED is used as light source to measure transmission spectra of water, alcohol, and bovine hemoglobin solution. These results indicate the NIR garnet phosphor to be a promising candidate for NIR pc-LED.
Keyword	broadband emission,chromium doping,light-emitting diodes,near-infrared spectroscopy,phosphors,near-infrared spectroscopy,photoluminescence,glass,Materials Science,Optics
DOI	10.1002/adom.201900185
Indexed By	SCI ; EI
Language	英语
Citation statistics
Document Type	期刊论文
Identifier	http://ir.ciomp.ac.cn/handle/181722/62800
Collection	中国科学院长春光学精密机械与物理研究所
Recommended Citation GB/T 7714	L.L.Zhang,D.D.Wang,Z.D.Hao,et al. Cr3+-Doped Broadband NIR Garnet Phosphor with Enhanced Luminescence and its Application in NIR Spectroscopy[J]. Advanced Optical Materials,2019,7(12):8.
APA	L.L.Zhang.,D.D.Wang.,Z.D.Hao.,X.Zhang.,G.H.Pan.,...&J.H.Zhang.(2019).Cr3+-Doped Broadband NIR Garnet Phosphor with Enhanced Luminescence and its Application in NIR Spectroscopy.Advanced Optical Materials,7(12),8.
MLA	L.L.Zhang,et al."Cr3+-Doped Broadband NIR Garnet Phosphor with Enhanced Luminescence and its Application in NIR Spectroscopy".Advanced Optical Materials 7.12(2019):8.

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中国科学院长春光学精密机械与物理研究所