Work

Experimental and Theoretical Evaluation on Thermoelectricity for SPS-Joined p-n Module in Bi–Te System

Year: 2005

Type: article

Abstract: Thermoelectric p-n modules are prepared by the spark plasma sintering (SPS) solid bonding for experimental and theoretical evaluation on their thermoelectricity. Both p-type (Bi0.4Sb1.6Te3) and n-type (Bi2Te2.85Se0.15) materials are prealloyed from elemental granule mixture via the bulk mechanical alloying, shear-extruded to control their anisotropic texture and joined to fabricate p-n modules. The mutual atomic diffusion layer across the p-n interface is controlled down to 2 μm, 0.04 times narrower than that for hot-pressed p-n interface. Open-circuit voltage and resistance of p-n modules are measured for various interface layer height. They are compared with theoretical estimates via the computer-aided analysis. Analytical expressions are proposed to estimate the thermoelectric characteristics on p-n module. The power generation characteristics of p-n modules is also evaluated for various temperature differences between cold and hot sources.

Source: MATERIALS TRANSACTIONS

DOI: 10.2320/matertrans.46.1506

Authors: Sang Seok Kim, Shigeo Yamamoto, Tatsuhiko Aizawa, Atsushi Yamamoto

Institutions: Research Center for Advanced Science and Technology, The University of Tokyo, The University of Tokyo, National Institute of Advanced Industrial Science and Technology

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: bronze

OpenAlex ID: W2132481092

FWCI: 0.182

Cites: 6

Cited by: 3

Related to: 10