Neodymium-Doped Gadolinium Compounds as Infrared Emitters for Multimodal Imaging

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. GdVO [Formula: see text] , GdPO [Formula: see text] , GdAlO [Formula: see text] , Gd [Formula: see text] SiO [Formula: see text] and Gd [Formula: see text] Ga [Formula: see text] O [Formula: see text] (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.