[en] Solvothermal synthesis and optimization of pure Bismuth telluride (Bi₂Te₃) hexagonal nanoplatelets was carried out from Bismuth Oxide (Bi₂O₃) and Tellurium dioxide (TeO₂). XRD measurements revealed a sensitive change in crystallization behaviour in correlation with variation in Te/Bi stoichiometry identified through the exchange in intensities between (10$\overline{10}$) and (110) peaks. Further, Energy Dispersive X-ray (EDAX) analysis revealed the variation in Te/Bi ratio with respect to autoclave temperature. Field emission scanning electron Microscope (FESEM) and the high resolution transmission electron Microscope (HRTEM) studies show the complete growth of hexagonal nanoplatelets at 200 °C. Confocal Micro-Raman measurements revealed the occurrence of symmetry breaking in the synthesized hexagonal nanoplatelets. The electrical conductivity and the activation energy were recorded as 6.01×10⁻³ S/m and 0.042 eV respectively. Highest maximum absolute value of Seebeck coefficient of –355 μV/K was obtained for the hexagonal nanoplatelets.