Abstract
Intense blue emitting polycrystalline CaSiO3: Ce3+ (0−9 mole %) phosphors were synthesized by Solution Combustion Synthesis, using Calcium nitrate, fumed silica and ODH as starting materials. These phosphors were characterized by Powder X-ray Diffraction (PXRD), Fourier Transform Infra-red Radiation (FTIR), Scanning Electron Microscope (SEM) and Photoluminescence (PL) studies. PXRD profiles of samples reveals mixed phase formation of CaSiO3. The average crystalline size estimated using Scherer’s formula were found to be in the range of 24−37 nm. The FTIR spectra show strong transmittance peaks at 642,884,998 and 1067cm−1. The SEM micrographs reveal mesoporous structure of the samples. Upon 390 nm excitation the photoluminescence of CaSiO3 doped with Ce3+ phosphors show intense blue emission at 485 nm and 510 nm. The investigation reveals possible use of these phosphors for blue component for white emitting LEDs.
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