Thermal-Conductivity Measurement of Thermoelectric Materials Using 3ω Method

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

In this work, a measurement system for high-temperature thermal-conductivity measurements has been designed, constructed, and characterized. The system is based on the 3ω method which is an ac technique suitable for both bulk and thin-film samples. The thermal-conductivity measurements were performed in a horizontal three-zone tube furnace whose sample space can be evacuated to vacuum or alternatively a protective argon gas environment can be applied to prevent undesired oxidation and contamination of the sample material. The system was tested with several dielectric, semiconductor, and metal bulk samples from room temperature up to 725 K. The test materials were chosen so that the thermal-conductivity values covered a wide range from 0.37W⋅m−1⋅K−1 to 150W⋅m−1⋅K−1 . An uncertainty analysis for the thermal-conductivity measurements was carried out. The measurement accuracy is mainly limited by the determination of the third harmonic of the voltage over the resistive metal heater strip that is used for heating the sample. A typical relative measurement uncertainty in the thermal-conductivity measurements was between 5 % and 8 % ( k=2 ). An extension of the 3ω method was also implemented in which the metal heater strip is first deposited on a transferable Kapton foil. Utilizing such a prefabricated sensor allows for faster measurements of the samples as there is no need to deposit a heater strip on each new sample.
Original languageEnglish
Pages (from-to)3255–3271
JournalInternational Journal of Thermophysics
Volume36
Issue number12
DOIs
Publication statusPublished - 4 Sep 2015
MoE publication typeA1 Journal article-refereed

Fingerprint

thermoelectric materials
thermal conductivity
heaters
strip
metals
materials tests
Kapton (trademark)
furnaces
foils
contamination
deposits
argon
tubes
harmonics
vacuum
oxidation
heating
sensors
electric potential

Keywords

  • 3ω method
  • thermal conductivity
  • thermoelectric

Cite this

@article{d942e5a3a5134c3fb7ee3d492c54f1df,
title = "Thermal-Conductivity Measurement of Thermoelectric Materials Using 3ω Method",
abstract = "In this work, a measurement system for high-temperature thermal-conductivity measurements has been designed, constructed, and characterized. The system is based on the 3ω method which is an ac technique suitable for both bulk and thin-film samples. The thermal-conductivity measurements were performed in a horizontal three-zone tube furnace whose sample space can be evacuated to vacuum or alternatively a protective argon gas environment can be applied to prevent undesired oxidation and contamination of the sample material. The system was tested with several dielectric, semiconductor, and metal bulk samples from room temperature up to 725 K. The test materials were chosen so that the thermal-conductivity values covered a wide range from 0.37W⋅m−1⋅K−1 to 150W⋅m−1⋅K−1 . An uncertainty analysis for the thermal-conductivity measurements was carried out. The measurement accuracy is mainly limited by the determination of the third harmonic of the voltage over the resistive metal heater strip that is used for heating the sample. A typical relative measurement uncertainty in the thermal-conductivity measurements was between 5 {\%} and 8 {\%} ( k=2 ). An extension of the 3ω method was also implemented in which the metal heater strip is first deposited on a transferable Kapton foil. Utilizing such a prefabricated sensor allows for faster measurements of the samples as there is no need to deposit a heater strip on each new sample.",
keywords = "3ω method, thermal conductivity, thermoelectric",
author = "Ossi Hahtela and Mikko Ruoho and Emma Mykk{\"a}nen and Kari Ojasalo and Jaani Nissil{\"a} and Antti Manninen and Martti Heinonen",
year = "2015",
month = "9",
day = "4",
doi = "10.1007/s10765-015-1970-8",
language = "English",
volume = "36",
pages = "3255–3271",
journal = "International Journal of Thermophysics",
issn = "0195-928X",
publisher = "Springer",
number = "12",

}

Thermal-Conductivity Measurement of Thermoelectric Materials Using 3ω Method. / Hahtela, Ossi; Ruoho, Mikko; Mykkänen, Emma; Ojasalo, Kari; Nissilä, Jaani; Manninen, Antti; Heinonen, Martti.

In: International Journal of Thermophysics, Vol. 36, No. 12, 04.09.2015, p. 3255–3271.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Thermal-Conductivity Measurement of Thermoelectric Materials Using 3ω Method

AU - Hahtela, Ossi

AU - Ruoho, Mikko

AU - Mykkänen, Emma

AU - Ojasalo, Kari

AU - Nissilä, Jaani

AU - Manninen, Antti

AU - Heinonen, Martti

PY - 2015/9/4

Y1 - 2015/9/4

N2 - In this work, a measurement system for high-temperature thermal-conductivity measurements has been designed, constructed, and characterized. The system is based on the 3ω method which is an ac technique suitable for both bulk and thin-film samples. The thermal-conductivity measurements were performed in a horizontal three-zone tube furnace whose sample space can be evacuated to vacuum or alternatively a protective argon gas environment can be applied to prevent undesired oxidation and contamination of the sample material. The system was tested with several dielectric, semiconductor, and metal bulk samples from room temperature up to 725 K. The test materials were chosen so that the thermal-conductivity values covered a wide range from 0.37W⋅m−1⋅K−1 to 150W⋅m−1⋅K−1 . An uncertainty analysis for the thermal-conductivity measurements was carried out. The measurement accuracy is mainly limited by the determination of the third harmonic of the voltage over the resistive metal heater strip that is used for heating the sample. A typical relative measurement uncertainty in the thermal-conductivity measurements was between 5 % and 8 % ( k=2 ). An extension of the 3ω method was also implemented in which the metal heater strip is first deposited on a transferable Kapton foil. Utilizing such a prefabricated sensor allows for faster measurements of the samples as there is no need to deposit a heater strip on each new sample.

AB - In this work, a measurement system for high-temperature thermal-conductivity measurements has been designed, constructed, and characterized. The system is based on the 3ω method which is an ac technique suitable for both bulk and thin-film samples. The thermal-conductivity measurements were performed in a horizontal three-zone tube furnace whose sample space can be evacuated to vacuum or alternatively a protective argon gas environment can be applied to prevent undesired oxidation and contamination of the sample material. The system was tested with several dielectric, semiconductor, and metal bulk samples from room temperature up to 725 K. The test materials were chosen so that the thermal-conductivity values covered a wide range from 0.37W⋅m−1⋅K−1 to 150W⋅m−1⋅K−1 . An uncertainty analysis for the thermal-conductivity measurements was carried out. The measurement accuracy is mainly limited by the determination of the third harmonic of the voltage over the resistive metal heater strip that is used for heating the sample. A typical relative measurement uncertainty in the thermal-conductivity measurements was between 5 % and 8 % ( k=2 ). An extension of the 3ω method was also implemented in which the metal heater strip is first deposited on a transferable Kapton foil. Utilizing such a prefabricated sensor allows for faster measurements of the samples as there is no need to deposit a heater strip on each new sample.

KW - 3ω method

KW - thermal conductivity

KW - thermoelectric

U2 - 10.1007/s10765-015-1970-8

DO - 10.1007/s10765-015-1970-8

M3 - Article

VL - 36

SP - 3255

EP - 3271

JO - International Journal of Thermophysics

JF - International Journal of Thermophysics

SN - 0195-928X

IS - 12

ER -