Abstract
Herein, structural and optical properties of Cu2MSnS4 (M = Co and Fe) nanoparticles synthesized by ultrasonic-assisted sol–gel method using two different solvents are studied. XRD study shows the nanoparticles with tetragonal kesterite structure and crystallite size in the range of 4–7 nm. XPS study reveals the oxidation state of constituent elements. The optical band gap and textural properties like surface area and pore size are estimated through UV–VIS–NIR and nitrogen adsorption–desorption analyses.
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