Metamaterial emitter for thermophotovoltaics stable up to 1400 °C

Manohar Chirumamilla, Gnanavel Vaidhyanathan Krishnamurthy, Katrin Knopp, Tobias Krekeler, Matthias Graf, Dirk Jalas, Martin Ritter, Michael Störmer, Alexander Petrov & Manfred Eich
High temperature stable selective emitters can significantly increase efficiency and radiative power in thermophotovoltaic (TPV) systems. However, optical properties of structured emitters reported so far degrade at temperatures approaching 1200 °C due to various degradation mechanisms. We have realized a 1D structured emitter based on a sputtered W-HfO 2 layered metamaterial and demonstrated desired band edge spectral properties at 1400 °C. To the best of our knowledge the temperature of 1400 °C is the highest...
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