Yttrium incorporation into the tungsten telluride (Y:WTe<sub>2</sub>) matrix achieved using three electrode systems.

The three-electrode electrochemical deposition technique was used to synthesize Y:WTe2. With a molar concentration of 0.1 mol/g, tellurium dioxide acts as the precursor of zinc tungstate. The molar concentration of the dopant yttrium (III) nitrate hexahydrate ranges from 0.01 to 0.03 mol/g. The XRD patterns of WTe2 and yttrium-doped tungsten telluride material both display a hexagonal crystal structure. The material exhibited a diffraction peak at (200) with a 2theta angle of 52.034o. At a nanoscale, the material exhibits a specific surface morphology (200 nm scale bar). The typical appearance of materials at this scale is a textured and granular structure on the surfaces. The undoped WTe2 exhibits well-structured condensed nanoparticles on the FTO glass, along with a clouded white wood precipitate, indicating the formation of tungsten telluride on the FTO substrate. The absorbance of (WTe2 and various Y-doped compositions) changes with different wavelengths. Stronger light absorption is indicated by higher absorbance, which is correlated with electronic transitions in the material. The energy bandgap of undoped WTe2 is 1.25 eV, while yttrium-doped WTe2 shows a range of 1.99 to 1.62 eV bandgap with increasing dopant concentration.