Properties of CIE chromaticity and X-ray excitation spectra of red hypersensitive LaAlO3∶Eu3+nanophosphors
A new type of red hypersensitive LaAlO3∶Eu3+phosphor was synthesized using solution combustion synthe-sis method.The synthesized LaAlO3∶Eu3+material has a pure R3-c(No.167)structure.The spectroscopic properties of LaAlO3∶Eu3+nanophosphors were investigated by using spectroscopic method.The results showed that the LaAlO3∶Eu3+nanophosphors emitted strong red-light luminescence under X-ray excitation,and that the central wavelength of the spectral band is at 620 nm.The quenching concentration of red-light luminescence is 6.0 mol%.The CIE chromaticity research indi-cated that the sample had excellent red fluorescence emission characteristics,and that the concentration effect had a relative-ly small impact on its color tone and purity.The properteis indicate that the synthesized fluorescent powder can serve as an efficient scintillator that has important application value in fields such as high-efficiency ultraviolet LEDs and radiation de-tection.
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