Deposition and stability of high-temperature-stable thin-film hyperbolic metamaterials (C07)

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The application of thin-film metamaterials as thermal emitters for thermophotovoltaic transforming heat to electricity is limited due to the low-melting metals. The synthesis of selective absorber/emitter metamaterials with high-melting refractory metals, nitrides as well as carbides for highest temperatures (> 1000°C) is the scientific challenge. The investigations are focused on thermal stability. The layer design of metamaterials such as length scales, materials, interlayers and microstructure will be adjusted and optimized for highest achievable working temperatures and required optical properties.