Antireflection coated refractory metal matched emitters for use in thermophotovoltaic generators
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United States of America Patent
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Aug 7, 2001
Grant Date -
N/A
app pub date -
May 31, 2000
filing date -
Apr 3, 2000
priority date (Note) -
Expired
status (Latency Note)
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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 HfO.sub.2, ZrO.sub.2, Al.sub.2 O.sub.3, Ta.sub.2 O.sub.5 and TiO.sub.2 antireflection layers used as IR emitters for GaSb converter cells in TPV generators.
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