Broadband near-infrared(NIR)-emitting materials are crucial components of the next generation of smart NIR light sources based on blue light-emitting diodes(LEDs).Here,we report a Te cluster-doped borate glass,which exhibits ultra-broadband emission around 980 nm with a full-width at half-maximum(FWHM)of306 nm under blue light excitation.We propose adjustments of glass chemistry and processing condition as a means for topo-chemical tailoring of the NIR photoemission characteristics in such materials.Through implementing strongly reducing conditions during glass melting,Te clusters with broad NIR photoluminescence can be generated and stabilized once the melt is vitrified to the glassy state.Tunability of the NIR emission peak over the wavelength range of 904 to 1026 nm is possible in this way,allowing for fine adjustments of spectral properties relative to the stretching vibrations of common chemical bonds,for example,in water,proteins,and fats.This potentially en-ables high sensitivity in NIR spectroscopy.We further demonstrate potential application of glass-converted LEDs in night vision.

LINLING TAN;YANQING FU;SHILIANG KANG;LOTHAR WONDRACZEK;CHANGGUI LIN;YUANZHENG YUE

Laboratory of IR Materials and Devices,Research Institute of Advanced Technologies,Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province,Ningbo University,Ningbo 315211,China;Otto Schott Institute of Materials Research,University of Jena,07743 Jena,Germany;Department of Chemistry and Bioscience,Aalborg University,9220 Aalborg,Denmark

光子学研究（英文）

[1]LINLING TAN;YANQING FU;SHILIANG KANG;LOTHAR WONDRACZEK;CHANGGUI LIN;YUANZHENG YUE-.Broadband NIR-emitting Te cluster-doped glass for smart light source towards night-vision and NIR spectroscopy applications)[J].光子学研究（英文）,2022(05):1187-1193

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