Tunable broadband photoluminescence from bismuth-doped calcium aluminum germanate glasses prepared in oxidizing atmosphere

Cao J, Ding Y, Limbach R, Nozari V, Sajzew R, Sun M, Zhang P, Wondraczek L (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Journal of the American Ceramic Society Wiley-Blackwell

Book Volume: 105

Pages Range: 5676-5686

Journal Issue: 9

DOI: 10.1111/jace.18513

Abstract

Tunable photoluminescence (PL) from transparent inorganic glass matrices is of interest for applications demanding a semitransparent photoconverter that does not elastically scatter incoming light. For this purpose, bismuth (Bi)-doped optical materials exhibit unique spectral characteristics in terms of bandwidth and emission tunability. Here, we demonstrate a facile route for preparing such converters from Bi-doped calcium-aluminate and calcium-aluminogermanate glasses. These glasses offer tunable PL across the near violet and visible-to-near-infrared (NIR) spectral range, with an emission lifetime in the range of 300 μs. The addition of GeO2 exerts a decrease in optical basicity, which in turn enables the stabilization of NIR-active low-valence Bi species for broadband NIR PL.

Authors with CRIS profile

Lothar Wondraczek

Involved external institutions

Friedrich-Schiller-Universität Jena DE Germany (DE)

How to cite

APA:

Cao, J., Ding, Y., Limbach, R., Nozari, V., Sajzew, R., Sun, M.,... Wondraczek, L. (2022). Tunable broadband photoluminescence from bismuth-doped calcium aluminum germanate glasses prepared in oxidizing atmosphere. Journal of the American Ceramic Society, 105(9), 5676-5686. https://doi.org/10.1111/jace.18513

MLA:

Cao, Jiangkun, et al. "Tunable broadband photoluminescence from bismuth-doped calcium aluminum germanate glasses prepared in oxidizing atmosphere." Journal of the American Ceramic Society 105.9 (2022): 5676-5686.

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