Effect of process parameters on the synthesis of YAG nano-crystallites in supercritical solvent

Methanol–Water System for Solvothermal Synthesis of YVO4:Eu with High Photoluminescent Intensity

“…Thus, it is reasonable to assume that such a morphology transformation takes place as a result of a dissolution-recrystallization process even though the composition of the solvated species could not be identified until this stage. Application of the mixed methanol-water solvent, which has a lower viscosity than pure water, as well as the subcritical or supercritical conditions are the factors providing high mobility of ions, 32,33 allowing the nanocrystallites to grow nearly defect free. As a result, the prepared powders exhibit very high fluorescence intensities even after short annealing times at relatively low temperatures for YVO 4 -based phosphors.…”