Berlin 2015 – scientific programme

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O: Fachverband Oberflächenphysik

O 36: Plasmonics and Nanooptics

O 36.5: Poster

Tuesday, March 17, 2015, 18:15–21:00, Poster A

plasmonic based low emission coatings — Mehdi Keshavarz Hedayati, •Moheb Abdelaziz, and Mady Elbahri — Nanochemistry and Nanoengineering, Institute for Materials Science, Faculty of Engineering, Christian-Albrechts-Universität zu Kiel, Kiel, Germany

High energy consumption in the current century makes development of new efficient energy saving materials inevitable. One of the highly used energy saving material are "low emission coatings" (also known as low-e coating) which are generally fabricated by transparent conductors. In such a approach, the transmission of visible light is relatively high while the near infrared transmission is negligible. However, the typical transparent conductors are made of indium tin oxide which is a costly compound and hence the need of cheaper replacing system is critical. In this work, we make use the high reflection of metallic film in IR frequency to our benefit to develop a new highly efficient low-e material. There, a composite out of metal-dielectric which sustain plasmon resonance is used to suppress the reflection of thin metal film in visible while keeping the reflection at NIR very high. In that sense, the resulting structure is highly transparent in visible whereas it block the light passage at NIR (by reflection). Therefore the heat can be maintained in the house if such a film is being used as the windows coating in cold area (e.g. Germany). The simple fabrication of this two layers coating turn it a reasonable alternative for next generation of low-e materials.