均一沈殿法によるY_2O_3:Eu微粒子合成における陰イオン種の影響

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The effect of anionic species (SO4 2-, Cl-, NO3-) in synthesizing fine particles of phosphor (Y2O3 : Eu) from the homogeneous solution which dissolved Y2O3 and Eu2O3 by the addition of H2SO4, HCl or HNO3 by liquid-phase method which used the urea for the precipitant generator was studied. The shape of synthetic fine particles is different by the anionic species in the solution, and in the system including SO42-, the shape of the fine particles was irregular, and in the system including Cl- or NO3-, it was spherical and monodispersed. Monodispersed spherical fine particles synthesized from the solution including Cl- or NO3- was guessed with the amorphous basic carbonate. On the other hand, the fine particle synthesized from the solution including SO42- showed crystal structure, and it was the different composition which contained the SO42- as a component. The fine particles synthesized from the solution including Cl- or NO3 - were inverted to the monophase of metal oxide by calcination at the temperature ove r about 600°C, and it confirmed that it was not almost influenced to spherical form and monodispersion. And, these calcined fine particles showed fluorescence spectra with luminescence peak in 611nm which was peculiar to the Y2O3 : Eu phosphor. On the other hand, in case of the synthesis from the solution including SO4 2-, SO42- contained in the fine particle remained after calcination, and the crystallinity after calcination was comparatively low. And, these calcined fine particles showed different fluorescence spectra with the Y2O 3 : Eu phosphor.
社団法人資源・素材学会の論文
2000-11-25

均一沈殿法によるY_2O_3:Eu微粒子合成における陰イオン種の影響

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均一沈殿法によるY_2O_3:Eu微粒子合成 における陰イオン種の影響

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均一沈殿法によるY_2O_3:Eu微粒子合成における陰イオン種の影響