Selective Emission of Al2O3/Er3Al5O12 Eutectic Composite for Thermophotovoltaic Generation of Electricity
- 1 April 2000
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 39 (4R) , 1957
- https://doi.org/10.1143/jjap.39.1957
Abstract
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 µm attributable to Er3+ ions. It is found that the intensity obeys the T 4-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.Keywords
This publication has 1 reference indexed in Scilit:
- Rare-earth garnet selective emitterApplied Physics Letters, 1994