Enhanced Vis-to-UVC Upconversion in Pr3+-Doped A3(BO3)2 (A = Sr, Ca) under 444 nm Excitation: Suppression of Cluster Formation via Alkali Ion Co-doping.

Upconverting materials represent a diverse and significant class of luminophores, with those capable of converting visible (vis) light into ultraviolet C (UVC) playing a particularly important role. This is due to the germicidal properties of UVC rad…

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