Antireflection coated refractory metal matched emitter for...

H - Electricity – 02 – N

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H02N 6/00 (2006.01) H01L 31/04 (2006.01)

Patent

CA 2356910

Thermophotovoltaic (TPV) electric power generators (15) have emitters (1) with infrared (IR) outputs matched with usable wavelengths for converter cells (11). The emitters (1) 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 TaSi2 emitter layers and 0.14 micron ZrO2 or Al2O3 antireflection layers used as IR emitters for GaSb converter cells in TPV generators

La présente invention concerne des générateurs électriques thermophotovoltaïques (TPV) pourvus d'émetteurs à sorties infrarouge (IR) accordés à des longueurs d'ondes utilisables par les cellules de convertisseur. Ces émetteurs possèdent des substrats durables, éventuellement des couches isolantes réfractaires, des couches d'émission réfractaires conductrices métalliques ou intermétalliques, et des couches conductrices réfractaires d'oxyde de métal antiréflexion. Ces substrats de SiC possèdent des couches d'émission de tungstène ou de TaSi2 et des couches antiréflexion de ZrO2 ou de Al2O3 de 0,14 microns utilisées comme émetteurs IR pour cellules de convertisseur en GaSb dans des générateurs TPV.

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