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Conference Paper
Rolled Thin Film Thermoelectric Materials for Efficient Electric Power Generation
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- Authors
- Himchan Oh, Sooji Nam, Ji Hun Choi, Chi-Sun Hwang, Myung-Lae Lee
- Issue Date
- 2017-05
- Citation
- International Conference on Researches in Science and Technology (ICRST) 2017, pp.1-1
- Language
- English
- Type
- Conference Paper
- Abstract
- We propose a method to modularize thin film thermoelectric materials by rolling them up for efficient electric power generation. Numerous thin film materials with high thermoelectric figure of merit (ZT) have been introduced for effective conversion of heat into electricity.However, their practical use in thermoelectric generator is limited due to the thickness to build the sufficient temperature gradient for driving large electromotive force. As the 'thin' film materials have thicknesses range from few nanometers to several micrometers, the temperature of cold side quickly reaches toward hot side temperature. The problem gets even worse when the proper cooling solution is absent and the material is thinner. This makes thin film thermoelectric materials useless for power generation. To overcome this, we first formed high performance thermoelectric thin film and then delaminate it from the substrate. Finally, the detached film type materials rolled and stand up for modularization. Now the dimension of thin film materials is expandable freely to the substrate size. The thermoelectric generator fabricated by rolled-up module will be demonstrated.
- KSP Keywords
- Cooling solution, Electric power generation, High performance, Practical use, Temperature gradient, Thermoelectric thin film, Thin film materials, Thin film thermoelectric, electromotive force, rolled-up, thermoelectric figure of merit