Matched infrared emitters for use with GaSb TPV cells
- JX Crystals, Inc., Issaquah, Washington (United States)
Most TPV systems described previously have relied on either filters with near-blackbody emitters or rare earth selective emitters to achieve spectral control. There are serious practical problems with both of these approaches. A new, highly efficient yet practical emitter is presented in this work and will be termed the {open_quotes}matched{close_quotes} emitter because its emissive power spectrum is well matched with the infrared response of GaSb photovoltaic cells. The matched emitter is capable of radiating power that is comparable to a blackbody at the same temperature in the useful portion of the energy spectrum, while at the same time greatly suppressing radiation at non-convertible wavelengths. This behavior is explained in terms of the novel chemistry and materials used in making the matched emitter. Relative emissive power dependence on doping concentration and matrix material is presented. A method for measuring absolute emissive power for matched emitters is presented. Some problems with temperature measurements are discussed and an estimated emittance is presented. {copyright} {ital 1997 American Institute of Physics.}
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 575630
- Report Number(s):
- CONF-9705119-; ISSN 0094-243X; TRN: 9723M0012
- Journal Information:
- AIP Conference Proceedings, Vol. 401, Issue 1; Conference: 3. NREL conference on thermophotovoltaic (TPV) generation of electricity, Colorado Springs, CO (United States), 18-21 May 1997; Other Information: PBD: Mar 1997
- Country of Publication:
- United States
- Language:
- English
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