Hydrothermal synthesis of lanthanide-doped GdPO₄ nanowires and nanoparticles for optical applications

In this work, Eu³⁺ and Tb³⁺ doped GdPO₄ nanocrystals, with different shapes were successfully synthetized by an original hydrothermal method. The particles morphology was modified changing the pH value and using glycerol as co-solvent in the synthesis. Depending on the synthesis conditions, TEM analyses have revealed the achievements of nanowires and nanoparticles with narrow size distributions. Their structural, morphological, and photoluminescent properties were investigated and compared. Luminescent composite films based on silicone polymer were prepared using GdPO₄:Eu³⁺ and GdPO₄:Tb³⁺ with different morphology as filler.