Broadband NIR-emitting Te cluster-doped glass for smart light source towards night-vision and NIR spectroscopy applications

Tan L, Fu Y, Kang S, Wondraczek L, Lin C, Yue Y (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Photonics Research Optical Society of America

Book Volume: 10

Pages Range: 1187-1193

Journal Issue: 5

DOI: 10.1364/PRJ.446416

Abstract

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) of 306 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 enables high sensitivity in NIR spectroscopy. We further demonstrate potential application of glass-converted LEDs in night vision.

Authors with CRIS profile

Lothar Wondraczek

Involved external institutions

Ningbo University / 宁波大学 CN China (CN) Friedrich-Schiller-Universität Jena DE Germany (DE) Aalborg University DK Denmark (DK)

How to cite

APA:

Tan, L., Fu, Y., Kang, S., Wondraczek, L., Lin, C., & Yue, Y. (2022). Broadband NIR-emitting Te cluster-doped glass for smart light source towards night-vision and NIR spectroscopy applications. Photonics Research, 10(5), 1187-1193. https://dx.doi.org/10.1364/PRJ.446416

MLA:

Tan, Linling, et al. "Broadband NIR-emitting Te cluster-doped glass for smart light source towards night-vision and NIR spectroscopy applications." Photonics Research 10.5 (2022): 1187-1193.

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