U.S. scientists develop air-bridge thermophotovoltaic cells with 44% efficiency

U. S. scientists have developed a thermophovoltaic cell that could be paired with inexpensive thermal storage to provide power on demand. The indium gallium arsenide (InGaAs) thermophovoltaic cell absorbs most of the in-band radiation to generate electricity, while serving as a nearly perfect mirror. Thermophotovoltaics (TPV) is a power generation technology that uses thermal radiation to generate electricity in photovoltaic cells. A TPV system generally consists of a thermal emitter that can reach high temperatures, near or beyond 1,000 C, and a photovoltaic diode cell that can absorb photons ...

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