Could ‘hot carrier’ solar cells break the theoretical efficiency limit?


"creating “satellite valleys” in the band structure of semiconductors, where hot carriers can temporarily be stored without energy loss. The satellite valley changes the kinetic energy of the excess heat particles into potential energy, changing the particle from a loss to one that is stored. The researchers were able to successfully demonstrate storage of heat through the satellite valley effect by using a indium-gallium-arsenide and aluminum (InGaAs/InAlAs) structure"

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https://www.asme.org/topics-resources/content/thermophotovoltaic-efficiency-record-may-lead-to-compact-power

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