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Plasma-spray coated rare-earth oxides on molybdenum disilicide - High temperature stable emitters for thermophotovoltaics

Author

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  • Tobler, W.J.
  • Durisch, W.

Abstract

Selective emitters for thermophotovoltaics consisting of intermetallic alloy MoSi2 substrate with plasma-spray coated rare-earth oxides ytterbium oxide Yb2O3, Yb-doped garnet Yb1.5Y1.5Al5O12, and erbium oxide Er2O3 have been successfully tested till 1650 °C. The emitters are fully operable in an oxygen containing atmosphere, are highly thermal shock stable, and show good selective emitting properties. Shielding the high out-of-band emittance of the MoSi2 substrate with a 4 [mu]m thick Pt intermediate layer has resulted in reduced radiation power and emittance of the rare-earth oxide film due to multiple reflections at the interfaces. The novel technique of vacuum plasma-spray coated rare-earth oxide films on MoSi2 is a promising way for the production of effective and high temperature stable selective thermophotovoltaic emitters.

Suggested Citation

  • Tobler, W.J. & Durisch, W., 2008. "Plasma-spray coated rare-earth oxides on molybdenum disilicide - High temperature stable emitters for thermophotovoltaics," Applied Energy, Elsevier, vol. 85(5), pages 371-383, May.
    • Handle: RePEc:eee:appene:v:85:y:2008:i:5:p:371-383
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    Cited by:

    1. Wijewardane, S. & Goswami, Yogi, 2014. "Extended exergy concept to facilitate designing and optimization of frequency-dependent direct energy conversion systems," Applied Energy, Elsevier, vol. 134(C), pages 204-214.
    2. Bitnar, Bernd & Durisch, Wilhelm & Holzner, Reto, 2013. "Thermophotovoltaics on the move to applications," Applied Energy, Elsevier, vol. 105(C), pages 430-438.
    3. Liu, ZuMing & Fang, YueXiao & Chen, ShiYu & Zhang, Tao & Lv, ZhenYu & Luo, Zhen, 2019. "Focusing cathode tip characteristics in cooling tungsten," Energy, Elsevier, vol. 167(C), pages 982-993.
    4. Daneshvar, Hoofar & Prinja, Rajiv & Kherani, Nazir P., 2015. "Thermophotovoltaics: Fundamentals, challenges and prospects," Applied Energy, Elsevier, vol. 159(C), pages 560-575.
    5. Butcher, T.A. & Hammonds, J.S. & Horne, E. & Kamath, B. & Carpenter, J. & Woods, D.R., 2011. "Heat transfer and thermophotovoltaic power generation in oil-fired heating systems," Applied Energy, Elsevier, vol. 88(5), pages 1543-1548, May.

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