article.page.titleprefix Growth and optical properties of (Na0.5Bi0.5)(Mo1−xWx)O4 (x = 0.25) single crystal: A potential candidate for optoelectronic devices
Date
2024-01
Journal Title
Journal ISSN
Volume Title
Publisher
Optical and Quantum Electronics
Abstract
Double tungstates (DT) and double molybdates (DM) have significant importance because of their optoelectronic applications. Regarding the importance of DT and DM, we investigated experimentally structural and optical properties of (Na0.5Bi0.5)(Mo1−xWx)O4 (x = 0.25) crystal that belongs to the NaBi DT and DM crystals group. Czochralski method was used to grow the single crystals. The structure of the crystal was identified using X-ray diffraction (XRD) measurements. Two sharp peaks associated with tetragonal crystal structure appeared in the pattern. Vibrational modes of the studied crystal were obtained from the Raman experiments. By the help of the Fourier transform infrared spectrophotometer (FTIR) measurements, infrared transmittance spectrum of the studied compound was recorded. Band gap energy wase found around 3.04 eV using two methods, Tauc and derivative analysis, based on transmission spectrum. Based on the analysis of absorption coefficient, Urbach energy was obtained as 0.22 eV. The revealed structural and optical properties of the crystal indicated that the material may be a candidate for optoelectronic devices in which NaBi(MoO4)2 and NaBi(WO4)2 materials are utilized.
Description
Published by Optical and Quantum Electronics; https://doi.org/10.1007/s11082-023-05549-3; I. Guler, Physics, Inter-Curricular Courses Department, Çankaya University, 06530 Ankara, Turkey; 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.
Keywords
Double tungstates; Double molybdates; XRD; Optical properties
Citation
https://hdl.handle.net/20.500.14411/2007