Synthesis and Vacuum Ultraviolet Spectral Properties of Nano-scaled Phosphors

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The nano-scaled red phosphor YBO₃: Eu³⁺, green phosphor ZnSiO₄: Mn²⁺ and blue phosphor BaMgAl₁₀O₁₇: Eu²⁺ were synthesized by wet-chemical techniques. The morphologies and spectral properties of the three nano-phosphors under 147 nm excituation were investigated. For YBO₃: Eu³⁺, nano-sheets was obtained by solvent-thermal process, which reached 78.8% of the commercial red phosphor on emission intensity and exhibited better color purity than the latter. For ZnSiO₄: Mn²⁺, different morphologies were obtained by hydrothermal method with varying ratio of CTAB to TEOS, among which the nano-spheres presented the strongest emission intensity and reached 86% of that of the commercial green phosphor. For BaMgAl₁₀O₁₇: Eu²⁺, nano-rods were acquired using sol-gel process, which exhibited 78.15% of the commercial blue phosphor on emission intensity and the low y value of color coordinates, which indicated that the nano-rods were efficient for restricting the deteriorate during application.