Selective emission of Al2O3/Er3Al5O12 eutectic composite for thermophotovoltaic generation of electricity

Hitoshi Sai, Hiroo Yugami, Kazuya Nakamura, Narihito Nakagawa, Hideki Ohtsubo, Shigenao Maruyama

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39 Citations (Scopus)


The emissive properties of Al2O3/Er3Al5O12 eutectic composite were measured in the temperature range of 1000 to 1700 K. It was confirmed that the Al2O3/Er3Al5O12 eutectic composite has selective emission bands at a wavelength of 1.5 μn attributable to Er3+ ions. It is found that the intensity obeys the T4-law. The emittance of over 0.8 is observed in the selective region. Since these emission bands match up the sensitive region of the GaSb PV cell spectrally, the Al2O3/Er3Al5O12 eutectic composite is a suitable emitter material for using in thermophotovoltaic generation systems. The effects of temperature and thickness on the selective emission efficiency have been studied and discussed.

Original languageEnglish
Pages (from-to)1957-1961
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number4 A
Publication statusPublished - 2000


  • Eutectic composite
  • Gasb pv cell
  • High temperature emission
  • Rare earths
  • Selective emitter
  • Thermophotovoltaic generation

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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