Physicochemical Properties and Thermoelectric Studies of Electrochemically Deposited Lead Telluride Films

Anil B. Gite,1,3 

Balasaheb M. Palve,1,4

Vishwasrao B. Gaikwad,2 

Sarika D. Shinde,

Gotan H. Jain3* 

Habib. M. Pathan1*

1Advance Physics Laboratory, Department of Physics, Savitribai Phule Pune University, Pune 411 007, India

2KTHM College, Department of Chemistry, Nashik 422 002, Maharashtra, India

3SNJB’sArts, Commerce Science College, Chandwad, Nashik 423 101, Maharashtra, India

4SN Arts, DJM Commerce, BNS Science college, Sangamner 422605, Maharashtra, India

Abstract

In recent years, various works has been done for the improvement of thermoelectric (TE) figure of merit of materials. Among the studied TE materials PbTe is a typical intermediate-temperature range TE material, which has undergone extensive developments and achieved excellent high TE performance. PbTe-based TE materials gives the better TE performance by manipulating charge and phonon transports, optimizing carrier density to tune fermi level, tailoring band structure to enhance effective mass, and designing all-scale hierarchical architectures to suppress phonon propagation gives the higher figure merit. In the present work, PbTe films were deposited on a pure copper substrate at room temperature using the three electrode electrodeposition process and various deposition parameters like mass of the material deposited on the substrate and deposition potential of the synthesized PbTe films were optimized. The synthesized film shows well stoichiometric and hydrophilic nature by contact angle measurements. The oxidation and reduction peaks during the cathodic and anodic scan of the electrolyte material are given by cyclic voltammetry (CV). Fourier transform infrared spectroscopy (FT-IR) provides the existence of different modes of PbTe in the film. The thermo-emf and thermo-power of the synthesized PbTe film were determined.

 

Physicochemical Properties and Thermoelectric Studies of Electrochemically Deposited Lead Telluride Films