Photoluminescence Properties of Eu~(2+), Mn~(2+)Co-doped Ca_(10)Si_6O_(21)Cl_2 by Sol-gel Method

摘要

White light-emitting materials of Eu~(2+), Mn~(2+)-codoped Ca_(10)Si_6O_(21)Cl_2 were prepared. Luminescence properties and other samples phase were tested by X-ray diffraction (XRD) and fluorescence spectrophotometer (PL). The results showed that the temperature range of 730°C to 760 °C and the ideal holding time is 4h~5h, the emission spectrum of Eu~(2+)-doped sample under excitation at 365nm wavelength was 426nm, 524nm in a weak reductive atmosphere of active carbon, the emission spectrum of Eu~(2+), Mn~(2+) co-doped samples was 426nm, 524nm, 585nm, the three combined can produce white light.