Tiを添加したペロブスカイト型酸化物BaZrO_3の青色長残光特性 Blue Long-lasting Phosphorescence of Ti-doped BaZrO_3 Perovskites
We report on the long-lasting phosphorescence in Ti-doped BaZrO<SUB>3</SUB> perovskite-type crystals (synthesized by a solid-state reaction method). The phosphorescence color is blue and the phosphorescence can still be seen with the naked eye for 30 minutes or more in the dark after stopping UV light. By the measurement of electron spin resonance (ESR) spectra, it was confirmed that the defects of F<SUP>+</SUP> center and Zr<SUP>3+</SUP> exist in the Ti: BaZrO<SUB>3</SUB> and their concentrations decrease with the additive amount of TiO<SUB>2</SUB>. It is expected that the luminescence center is F<SUB>A</SUB> center composed of Ti<SUP>3+</SUP> and F<SUP>+</SUP> center.
粉体および粉末冶金 55(3), 201-204, 2008-03-15
Japan Society of Powder and Powder Metallurgy