article.page.titleprefix Growth and characterization of PbMo0.75W0.25O4 single crystal: A promising material for optical applications
Date
2023-02-15
Journal Title
Journal ISSN
Volume Title
Publisher
Materials Chemistry and Physics
Abstract
The present paper reports the structural and optical properties of PbMo0.75W0.25O4 single crystals grown by Czochralski method. XRD pattern of the crystal indicated well-defined two diffraction peaks associated with tetragonal crystalline structure. Raman and infrared spectra of the grown single crystals were presented to get information about the vibrational characteristics. Observed Raman modes were associated with modes of PbMoO4 and PbWO4. Eight bands were revealed in the infrared spectrum. The bands observed in the spectrum were attributed to multiphoton absorption processes. Transmission spectrum was measured in the 375-700 nm spectral region. The analyses of the spectrum resulted in direct band gap energy of 3.12 ± 0.03 eV. The compositional dependent band gap energy plot was drawn considering the reported band gap energies of PbMoO4, PbWO4 and revealed band gap of PbMo0.75W0.25O4 single crystal. An almost linear behavior of composition-band gap energy was seen for PbMo1-xWxO4 compounds. Urbach energy was also found from the absorption coefficient analysis as 0.082 ± 0.002 eV.
Description
Published by Materials Chemistry and Physics, https://doi.org/10.1016/j.matchemphys.2022.127280, M. Isik, Department of Electrical and Electronics Engineering, Atilim University, 06836 Ankara, Turkey, N.M. Gasanly, Department of Physics, Middle East Technical University, 06800, Ankara, Turkey, N.H. Darvishov, V.E. Bagiev, Institute of Physical Problems, Baku State University, 1148 Baku, Azerbaijan.
Keywords
PbMoO4, PbWO4, optical parameters, optoelectronic applications
Citation
http://hdl.handle.net/20.500.14411/1824