Thin-film thermoelectric devices for energy harvesting and material parameter extraction

Kirsi Tappura, Kaarle Jaakkola, Taneli Juntunen, Ilkka Tittonen, Riina Ritasalo

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Abstract

A major barrier for a wider use of thermoelectric devices for energy harvesting is their low efficiency, which tends lead to a high cost per converted power. The ability to use non-toxic and abundant materials has also become increasingly important in the recent years and enhanced the interest towards improving the thermoelectric properties of metal oxides. Tin-doped indium oxide (ITO) is one of the most commonly used transparent conductive oxides due to its high electrical conductivity and high transparency. However, aluminum-doped zinc oxide (AZO) provides an environmentally friendly alternative that is more abundant, has better thermoelectric properties and lower cost. In this work, we present selected results of our thermoelectric device development based on AZO aiming at flexible thin-film TEG applications. Thermodynamic modelling and performance simulations are conducted for selected designs in order to estimate the available thermal gradients, the performance of the thermoelectric elements and the power available from the thermoelectric modules consisting of various geometries and configurations [1]. In addition to the electrical properties, the heat transfer mechanisms over the modules are studied. In addition to the conventional material characterizations, the potential of the materials is also evaluated by constructing experimental test devices of the thin-films and building corresponding simulation models of the test devices. By combining the experimental and theoretical approaches through device evaluations, the optimization of the thin-film materials and device designs can be performed in parallel for constructing a large-area thermoelectric module for thermal energy harvesting applicable in various environments without elaborated heat sinks. The ultimate goal of the project is to build a distributed sensor network integrating large-area thin-film thermoelectric devices and sensors for multifunctional smart windows and flexible high impact volume applications.
Original languageEnglish
Title of host publicationBook of Abstracts
Subtitle of host publicationMicronano System Workshop May 13-15, 2018
Place of PublicationEspoo
PublisherAalto University
Pages31
Number of pages1
Publication statusPublished - 15 May 2018
MoE publication typeNot Eligible
EventMicronano System Workshop, MSW 2018 - Aalto University, Espoo, Finland
Duration: 13 May 201815 May 2018

Workshop

WorkshopMicronano System Workshop, MSW 2018
Abbreviated titleMSW 2018
CountryFinland
CityEspoo
Period13/05/1815/05/18
OtherMSW is the Nordic forum for microsystems and nanotechnology.

Fingerprint

Parameter extraction
Energy harvesting
Thin films
Zinc oxide
Oxides
Thin film devices
Aluminum
Heat sinks
Thermal energy
Thermal gradients
Transparency
Indium
Tin
Sensor networks
Costs
Electric properties
Thermodynamics
Heat transfer
Geometry
Sensors

Cite this

Tappura, K., Jaakkola, K., Juntunen, T., Tittonen, I., & Ritasalo, R. (2018). Thin-film thermoelectric devices for energy harvesting and material parameter extraction. In Book of Abstracts: Micronano System Workshop May 13-15, 2018 (pp. 31). Espoo: Aalto University.
Tappura, Kirsi ; Jaakkola, Kaarle ; Juntunen, Taneli ; Tittonen, Ilkka ; Ritasalo, Riina. / Thin-film thermoelectric devices for energy harvesting and material parameter extraction. Book of Abstracts: Micronano System Workshop May 13-15, 2018. Espoo : Aalto University, 2018. pp. 31
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Tappura, K, Jaakkola, K, Juntunen, T, Tittonen, I & Ritasalo, R 2018, Thin-film thermoelectric devices for energy harvesting and material parameter extraction. in Book of Abstracts: Micronano System Workshop May 13-15, 2018. Aalto University, Espoo, pp. 31, Micronano System Workshop, MSW 2018, Espoo, Finland, 13/05/18.

Thin-film thermoelectric devices for energy harvesting and material parameter extraction. / Tappura, Kirsi; Jaakkola, Kaarle; Juntunen, Taneli; Tittonen, Ilkka; Ritasalo, Riina.

Book of Abstracts: Micronano System Workshop May 13-15, 2018. Espoo : Aalto University, 2018. p. 31.

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

TY - CHAP

T1 - Thin-film thermoelectric devices for energy harvesting and material parameter extraction

AU - Tappura, Kirsi

AU - Jaakkola, Kaarle

AU - Juntunen, Taneli

AU - Tittonen, Ilkka

AU - Ritasalo, Riina

PY - 2018/5/15

Y1 - 2018/5/15

N2 - A major barrier for a wider use of thermoelectric devices for energy harvesting is their low efficiency, which tends lead to a high cost per converted power. The ability to use non-toxic and abundant materials has also become increasingly important in the recent years and enhanced the interest towards improving the thermoelectric properties of metal oxides. Tin-doped indium oxide (ITO) is one of the most commonly used transparent conductive oxides due to its high electrical conductivity and high transparency. However, aluminum-doped zinc oxide (AZO) provides an environmentally friendly alternative that is more abundant, has better thermoelectric properties and lower cost. In this work, we present selected results of our thermoelectric device development based on AZO aiming at flexible thin-film TEG applications. Thermodynamic modelling and performance simulations are conducted for selected designs in order to estimate the available thermal gradients, the performance of the thermoelectric elements and the power available from the thermoelectric modules consisting of various geometries and configurations [1]. In addition to the electrical properties, the heat transfer mechanisms over the modules are studied. In addition to the conventional material characterizations, the potential of the materials is also evaluated by constructing experimental test devices of the thin-films and building corresponding simulation models of the test devices. By combining the experimental and theoretical approaches through device evaluations, the optimization of the thin-film materials and device designs can be performed in parallel for constructing a large-area thermoelectric module for thermal energy harvesting applicable in various environments without elaborated heat sinks. The ultimate goal of the project is to build a distributed sensor network integrating large-area thin-film thermoelectric devices and sensors for multifunctional smart windows and flexible high impact volume applications.

AB - A major barrier for a wider use of thermoelectric devices for energy harvesting is their low efficiency, which tends lead to a high cost per converted power. The ability to use non-toxic and abundant materials has also become increasingly important in the recent years and enhanced the interest towards improving the thermoelectric properties of metal oxides. Tin-doped indium oxide (ITO) is one of the most commonly used transparent conductive oxides due to its high electrical conductivity and high transparency. However, aluminum-doped zinc oxide (AZO) provides an environmentally friendly alternative that is more abundant, has better thermoelectric properties and lower cost. In this work, we present selected results of our thermoelectric device development based on AZO aiming at flexible thin-film TEG applications. Thermodynamic modelling and performance simulations are conducted for selected designs in order to estimate the available thermal gradients, the performance of the thermoelectric elements and the power available from the thermoelectric modules consisting of various geometries and configurations [1]. In addition to the electrical properties, the heat transfer mechanisms over the modules are studied. In addition to the conventional material characterizations, the potential of the materials is also evaluated by constructing experimental test devices of the thin-films and building corresponding simulation models of the test devices. By combining the experimental and theoretical approaches through device evaluations, the optimization of the thin-film materials and device designs can be performed in parallel for constructing a large-area thermoelectric module for thermal energy harvesting applicable in various environments without elaborated heat sinks. The ultimate goal of the project is to build a distributed sensor network integrating large-area thin-film thermoelectric devices and sensors for multifunctional smart windows and flexible high impact volume applications.

M3 - Conference abstract in proceedings

SP - 31

BT - Book of Abstracts

PB - Aalto University

CY - Espoo

ER -

Tappura K, Jaakkola K, Juntunen T, Tittonen I, Ritasalo R. Thin-film thermoelectric devices for energy harvesting and material parameter extraction. In Book of Abstracts: Micronano System Workshop May 13-15, 2018. Espoo: Aalto University. 2018. p. 31