Neodymium-Doped Gadolinium Compounds as Infrared Emitters for Multimodal Imaging

Maxime Delaey; Seppe Van Bogaert; Ewoud Cosaert; Wout Mommen; Dirk Poelman

doi:10.3390/ma16196471

Neodymium-Doped Gadolinium Compounds as Infrared Emitters for Multimodal Imaging

Materials (Basel). 2023 Sep 29;16(19):6471. doi: 10.3390/ma16196471.

Authors

Maxime Delaey¹, Seppe Van Bogaert¹, Ewoud Cosaert¹, Wout Mommen¹, Dirk Poelman¹

Affiliation

¹ LumiLab, Department of Solid State Sciences, Ghent University, 9000 Ghent, Belgium.

Abstract

This study aims to investigate the optical properties of multiple neodymium-doped gadolinium compounds as a means to examine their eligibility as optical probes for fluorescence imaging. GdVO4, GdPO4, GdAlO3, Gd2SiO5 and Gd3Ga5O12 (GGG) samples were synthesized through solid-state reactions with varying neodymium doping levels to compare their optical properties in great detail. The optimal doping concentration was generally found to be approximately 2%. Furthermore, the luminescence lifetime, which is a valuable parameter for time-gated imaging, was determined to range from 276 down to 14 µs for the highest doping concentrations, resulting from energy transfer and migration assisted decay.

Keywords: bioimaging; gadolinium compounds; luminescence; luminescence decay; near infrared; neodymium; spectroscopy.

Abstract

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