Growth and optical characterization of PbMo_0.5W_0.5O₄ single crystals for UV optoelectronic applications

Date

2026-01-01

Author

Mecit, Giray
Isik, M.
ALTUNTAŞ, GÖZDE
KARATAY, AHMET
Hasanlı, Nızamı
Darvishov, N. H.

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PbMo0.5W0.5O4 single crystals were successfully grown via the conventional Czochralski method, and their structural and optical properties were comprehensively investigated. x-ray diffraction analysis confirmed the phase purity and tetragonal scheelite-type structure with lattice parameters determined to be a = 5.3209 & Aring; and c = 12.8099 & Aring;. UV-Visible absorbance and transmission spectroscopy revealed a sharp absorption edge, indicative of a direct allowed electronic transition. The band gap energy was determined to be around 3.15 eV using Tauc plot analysis, supported by relatively low Urbach energy, suggesting minimal structural disorder. Photoluminescence measurements showed prominent green emission peaks at 488 and 512 nm, attributed to intrinsic structural defects and radiative recombination processes. The high optical quality and tunable band gap of PbMo0.5W0.5O4 make it a promising candidate for ultraviolet optoelectronic devices and photocatalytic applications.

URI

https://hdl.handle.net/11511/118651

Collections

Department of Physics, Article