Antireflection coated refractory metal matched emitters for use in thermophotovoltaic generators
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United States of America Patent
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Jan 23, 2001
Grant Date -
N/A
app pub date -
Sep 28, 1999
filing date -
Dec 21, 1998
priority date (Note) -
Expired
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Abstract
Thermophotovoltaic (TPV) electric power generators have emitters with infrared (IR) outputs matched with usable wavelengths for converter cells. The emitters have durable substrates, optional refractory isolating layers, conductive refractory metal or inter-metallic emitter layers, and refractory metal oxide antireflection layers. SiC substrates have tungsten or TaSi.sub.2 emitter layers and 0.14 micron ZrO.sub.2 or Al.sub.2 O.sub.3 antireflection layers used as IR emitters for GaSb converter cells in TPV generators.
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