Thermoelectric properties of sputter deposited Bi2Te3�PbTe multilayer thin films

Rawther, AN and Rout, U and S, PKD and Ramanathan, R and Mallik, RC (2024) Thermoelectric properties of sputter deposited Bi2Te3�PbTe multilayer thin films. In: Physica B: Condensed Matter, 673 .

PDF Phy_con_mat_2024.pdf - Published Version Restricted to Registered users only Download (10MB) | Request a copy

Abstract

Pristine Bi2Te3, PbTe, and multilayer of Bi2Te3/PbTe thin films were deposited on a glass substrate using the DC magnetron sputtering technique. XRD, FE-SEM, AFM, Raman, electrical, and thermal properties were analyzed to understand the structural, surface, electrical resistivity, Seebeck coefficient, and electrical part of thermal conductivity of the films. The structural analysis by XRD confirms the phase purity of the pristine films and the mixed phase for the multilayer films. FE-SEM morphology images showed a significant variation in the surface structure. The Seebeck coefficient, resistivity, and power factor analysis were carried out to understand the charge transfer processes. Multilayer films exhibited a high absolute Seebeck coefficient (S) value of �140.6 μV/K for BPB-5 film and �130.6 μV/K for BP-6 film compared to �92.9 μV/K of Bi2Te3 film with n-type behavior at 370 K. Similarly; the power factor value is also higher for multi-layer films compared to pristine film. © 2023 Elsevier B.V.

Item Type:	Journal Article
Publication:	Physica B: Condensed Matter
Publisher:	Elsevier B.V.
Additional Information:	The copyright for this article belongs to Author.
Keywords:	Bismuth compounds; Charge transfer; Deposition; Electric power factor; Film preparation; Glass substrates; IV-VI semiconductors; Lead compounds; Morphology; Multilayer films; Seebeck coefficient; Tellurium compounds; Thermal conductivity; X ray diffraction, Glass substrates; Magnetron-sputtering; Multi-layer thin film; Multilayers films; Power factors; Pristine films; Thermoelectric; Thermoelectric properties; Thin-films; XRD, Multilayers
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	01 Mar 2024 05:59
Last Modified:	01 Mar 2024 05:59
URI:	https://eprints.iisc.ac.in/id/eprint/83853

Actions (login required)

View Item