KFEiTŚ, WE-306, 10:15
In recent times, there is a noticeable surge in research endeavors focused on the utilization of nanophosphors in the field of medicine, as advanced instruments for fluorescence imaging, drug delivery, and image-guided therapy. This aspect holds particular significance in diverse applications where the efficient permeation of fluorescent nanoparticles across physiological barriers is crucial. Based on literature studies, it can be concluded that high powers LED chip generate large amounts of heat, which alters the luminescent properties of the phosphors. The quantum efficiency (QE) is reduced, and thus the probability of non-radiative transitions increases. An important aspect is the analysis of the effect of temperature on the emission profile and the probability of the energy transfer mechanism depending on the selected photonic materials. Luminescence measurements were made for 3 different photonic materials: phosphors, glasses and glass ceramics doped with RE ions. The effect of temperature on the emission profile and the possible mechanism of energy transfer between RE ions upon excitation with a UV laser diode was analyzed.