A quick and efficient measurement technique for performance evaluation of thermoelectric materials

Ashwin Rao, Pawan Banjade, Gregg Bosak, Binay Joshi, Jennifer Keane, Luke Nally, Adam Peng, Susanthri Perera, Alfred Waring, Giri Joshi, Bed Poudel

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Evaluating the performance of thermoelectric (TE) materials is critical for developing an efficient long lasting thermoelectric generator. Various parameters like resistance, TE power, TE efficiency as a function of temperature and time play an important role in developing and optimizing TE materials and legs. If one needs to evaluate the TE legs for performance or contact metallization optimization, study of a brazed or packaged device everytime could prove to be an expensive, time consuming process especially as a quick intermediate qualification. In this work, a simple approach that uses eutectic Gallium Indium (Ga-In) paste as a metallizing substitute with good electrical/thermal contact is employed which also avoids the need for brazing/welding (or any permanent joining) and provides a reliable platform for a quick leg qualification. Using open circuit voltage (Voc) and device voltage (Vd), one can evaluate important TE quantities like peak power, material resistance changes, peak current and power versus current characteristics to understand the leg performance. The proposed approach is successfully demonstrated with three different TE material systems namely Bismuth Telluride, Skutterudite and Half Heusler systems.

Original languageEnglish (US)
Article number105008
JournalMeasurement Science and Technology
Volume27
Issue number10
DOIs
StatePublished - Sep 9 2016

Fingerprint

thermoelectric materials
Measurement Techniques
Performance Evaluation
qualifications
Metallizing
evaluation
electric contacts
metallizing
Strategic materials
bismuth tellurides
thermoelectric generators
brazing
Brazing
Thermoelectric power
Open circuit voltage
Gallium
Bismuth
open circuit voltage
welding
Joining

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Engineering (miscellaneous)
  • Applied Mathematics

Cite this

Rao, Ashwin ; Banjade, Pawan ; Bosak, Gregg ; Joshi, Binay ; Keane, Jennifer ; Nally, Luke ; Peng, Adam ; Perera, Susanthri ; Waring, Alfred ; Joshi, Giri ; Poudel, Bed. / A quick and efficient measurement technique for performance evaluation of thermoelectric materials. In: Measurement Science and Technology. 2016 ; Vol. 27, No. 10.
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Rao, A, Banjade, P, Bosak, G, Joshi, B, Keane, J, Nally, L, Peng, A, Perera, S, Waring, A, Joshi, G & Poudel, B 2016, 'A quick and efficient measurement technique for performance evaluation of thermoelectric materials', Measurement Science and Technology, vol. 27, no. 10, 105008. https://doi.org/10.1088/0957-0233/27/10/105008

A quick and efficient measurement technique for performance evaluation of thermoelectric materials. / Rao, Ashwin; Banjade, Pawan; Bosak, Gregg; Joshi, Binay; Keane, Jennifer; Nally, Luke; Peng, Adam; Perera, Susanthri; Waring, Alfred; Joshi, Giri; Poudel, Bed.

In: Measurement Science and Technology, Vol. 27, No. 10, 105008, 09.09.2016.

Research output: Contribution to journalArticle

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AU - Peng, Adam

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AU - Joshi, Giri

AU - Poudel, Bed

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