Application of transparent conductive oxides films for high-temperature solar selective absorbers

Makoto Shimizu, Mari Suzuki, Asaka Kohiyama, Fumitada Iguchi, Hiroo Yugami

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

At present, the utilization of thermal energy from sunlight has been widely adopted as the working principle of concentrated solar power (CSP) generation systems. In this research, we suggest a CSP technology based on the properties of transparent conductive oxide (TCO) films on metal substrates which is compatible with mass production of solar selective absorbers that can be utilized at high temperatures. TCO material has plasma wavelength in infrared region. Therefore the electromagnetic wave with shorter wavelength than plasma wavelength goes through the material, while the electromagnetic wave with longer wavelength is reflected on the surface. By coating metal surface with a TCO film, interference is occurred in transparent wavelength range of TCO. Therefore, solar energy is highly absorbed, though thermal radiation from the absorber is suppressed. The optical property of fabricated TCO coated metal is well consistent with the simulated property. It is revealed that the performance of the absorber is improved by fabricating microstructures on the metal substrate. Thermal stability is confirmed at 700°C in vacuum for 3 hours. Solar absorptance and hemispherical emittance of the fabricated absorber are 0.82 and 0.17, respectively, which is comparable to that of commercialized absorbers.

Original languageEnglish
Title of host publicationASME 2014 8th International Conference on Energy Sustainability, ES 2014 Collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology
PublisherWeb Portal ASME (American Society of Mechanical Engineers)
ISBN (Electronic)9780791845868
DOIs
Publication statusPublished - 2014 Jan 1
EventASME 2014 8th International Conference on Energy Sustainability, ES 2014 Collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology - Boston, United States
Duration: 2014 Jun 302014 Jul 2

Publication series

NameASME 2014 8th International Conference on Energy Sustainability, ES 2014 Collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology
Volume1

Other

OtherASME 2014 8th International Conference on Energy Sustainability, ES 2014 Collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology
CountryUnited States
CityBoston
Period14/6/3014/7/2

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment

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