Optical characterization of nanocrystalline Pr2MoO6 synthesized via modified combustion technique

• Main Authors: Manu, K. B., Sankar, S., Vidya, S.
• Format: Conference Proceeding
• Language: English
• Subjects: Combustion; Emission spectra; Lattice parameters; Nanocrystals; Optical properties; Perovskites; Phosphors; Photoluminescence; Process parameters; Solid state lasers; Spectrum analysis; Structural analysis; Synthesis; X ray powder diffraction; X-ray diffraction
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0058238

Nanocrystalline Pr2MoO6, a promising material for numerous optical applications, has been synthesized by modified combustion technique. Structural analysis of the sample was performed by powder X-ray diffraction (XRD). The XRD analysis revealed that the as prepared sample has single phase with tetragonal structure. XRD studies indicates that the complex ceramic perovskite phase is formed during the combustion process itself without the need of any post calcination process. The obtained lattice parameters are a=b-= 5.610 and c=11.843Å which is well agreeing with JCPDS file. The crystalline size calculated from XRD by using Scherrer formula was 26 nm. The particle size estimated from transmission electron microscopy was in the range 24-28nm. The optical properties of the sample were studied using ultraviolet UV-Visible absorption spectroscopy, which showed that the sample showed maximum absorption in ultraviolet region trailing towards violet region of visible region. The material band gap increases from 2.72eV to 3.01eV on annealing. The photoluminescence spectra showed intense emission in the blue region and a medium intense peak in the red region. Pr2MoO6 finds applications in the field of phosphors for LED, as laser host materials and in solid state lasers besides the normal optical and luminescent applications.