Antireflection coated refractory metal matched emitters for...

H - Electricity – 01 – L

Patent

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H01L 31/058 (2006.01)

Patent

CA 2402825

Thermophotovoltaic (TPV) electric power generators have emitters (7) with infrared (IR) outputs matched with usable wavelengths for converter cells. The emitters (7) have durable substrates (4), optional refractory isolating layers (6), conductive refractory metal or inter-metallic emitter layers (2), and refractory metal oxide antireflection layers (8). SiC substrates have tungsten or TaSi2 emitter layers and 0.14 micron HfO2, ZrO2, Al2O2, Ta2O5 and TiO2 antireflection layers used as IR emitters for GaSb converter cells in TPV generators.

Selon l'invention, des générateurs de puissance électrique thermophotovoltaïques comprennent des émetteurs (1) équipés de sorties infrarouges accordées avec des longueurs d'ondes pouvant être utilisées pour des cellules de convertisseurs. Les émetteurs (1) présentent des substrats durables (4), des couches isolantes réfractaires optionnelles (6), des couches émettrices conductrices réfractaires métalliques ou intermétalliques (2) ainsi que des couches anti-réflexion en oxyde métallique réfractaire (8). Des substrats SiC comprennent du tungstène ou des couches émettrices TaSi¿2? et des couches anti-réflexion de 0.14 micron HfO¿2?, ZrO¿2?, Al¿2?O¿3?, Ta¿2?O¿5? et TiO¿2? utilisées comme émetteurs infrarouges pour des cellules de convertisseurs GaSb dans des générateurs TPV.

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