]>Synthesis of Luminescent Ink from Europium-Doped Y<sub>2</sub>O<sub>3</sub> Dispersed in Polyvinyl Alcohol Solution : Figure 7
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Figure 7: Photoluminescence spectra of Y2O3:Eu powder prepared at heating temperature of 1000 oC containing different Eu concentrations: (top to bottom) 3% mol/mol, 4% mol/mol, 5% mol/mol, and 7% mol/mol. In measurements, the samples were excited using a UV of 250 nm in wavelength.