Growth and optical characterization of PbMo0.5W0.5O4 single crystals for UV optoelectronic applications
PHYSICA SCRIPTA, no.101, pp.1-7, 2026 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Publication Date: 2026
- Doi Number: 10.1088/1402-4896/ae32d8
- Journal Name: PHYSICA SCRIPTA
- Journal Indexes: Scopus, Science Citation Index Expanded (SCI-EXPANDED), Chemical Abstracts Core, Compendex, INSPEC, zbMATH
- Page Numbers: pp.1-7
- TED University Affiliated: Yes
Abstract
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 Å and c =
12.8099 Å. 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.