Synthesis of Antimony Tri selenide (Sb2 Se3) ...

Synthesis of Antimony Tri selenide (Sb2 Se3) Nanoparticles for Solar Energy Conversion

Author Name : N. Thanga Kavila, C. Bhagya Lakshmi, S. AnnaVenus

ABSTRACT Antimony Triselenide (Sb3Se3) nanoparticles were prepared by solvothermal method using antimony chloride (Sbcl3), tartaric acid (C6 H6 O7) and selenium metal powder (Se) as the raw materials, and N-N dimethylformamide (DMF) as organic solvent. The surface morphology and the grain size in the range 43-45 nm were analysed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM).The chemical composition of the prepared sample were analysed by EDAX analysis, peaks gives an atomic ratio 2:3 for Sb:Se .UV-Vis spectra showed a direct band gap of 1.8eV, which is close to the optimum value for absorber layer application in solar cell. The photoluminescence spectrum shows band edge emission at 644nm.Functional groups of the prepared samples are measured by FT-IR analysis. The weight percentage as a function of temperature was determined using TG analysis. The complex impedance plots reveal only one semi-circular curve, which is attributed to the grain effect.