Study on the optical band gap and photoluminescence of PbMoO4 nano powder synthesized by an auto igniting combustion technique.

Nano crystalline PbMoO4 was synthesized through an auto-ignited combustion technique. The X-ray diffraction studies of PbMoO4 nanoparticles reveals that the as-prepared powder itself is single phase and possess tetragonal structure. The average particle size of the as-prepared powder calculated using scherrer formula is 28nm. Fourier transform Infrared spectrum shows that the as prepared powder itself is phase pure with no formation of secondary phase. The optical band gap determined from UV-Visible absorption spectra is 3.20eV. Photoluminescence spectra of the samples shows blue emission.