Authors : S. M. Naranje
Page Nos : 315-319
Description :
Abstract:
KAlP2O7 phosphor activated with Bi was synthesized by using combustion synthesis. The phosphor was characterized by X-ray diffraction method and was found to possess monoclinic structure. Photoluminescence spectra shows intense emission of Bi3+ around 325 nm corresponding to transition 1P1 1S0 state. This emission lies in UV region. The excitation spectra shows a maximum at around 250 nm with a good overlap at 254 nm which insures the use of the material as a lamp phosphor in UV region. As Bi3+ emission matches with the 4fN levels of the rare earth ion, energy transfer from Bi3+ to rare earth ions Gd, Eu, Dy and transition metal ions like Mn was studied in the sample KAlP2O7.
