ABSTRACT
Thallium doped bismuth telluride alloys (Bi2-xTlxTe3) are synthesized using solvothermal method, and pellets are formed using hot-press machine by applying 60 MPa pressure at 553 K temperature for 5 min. The X-ray powder diffraction for the as-synthesized Bi2-xTlxTe3 alloys indicates phase purity and crystallographic structures. Scanning electron microscopy indicates highly compact plate-like structures for hot-pressed pellets. The energy dispersive X-ray spectrophotometer predicts a stoichiometric ratio of 2:3 for Bi and Te in the Bi2Te3. The newly prepared Bi2-xTlxTe3 pellets could be utilized as an efficient material in thermoelectric devices for power generation from waste heat.
Funding
The authors would like to thank the Defence Research and Development Organization (DRDO), India, for providing the financial support through the extramural research funding Ref. No. ERIP/ER/1103992/M/01/1515.