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Get Free AccessThermophotovoltaic power conversion utilizes thermal radiation from a local heat source to generate electricity in a photovoltaic cell. It was shown in recent years that the addition of a highly reflective rear mirror to a solar cell maximizes the extraction of luminescence. This, in turn, boosts the voltage, enabling the creation of record-breaking devices. Now we report that the rear mirror can be used to create thermophotovoltaic systems with unprecedented high efficiency. This mirror reflects low-energy infrared photons back into the heat source, recovering their energy. This radically improves thermophotovoltaic efficiency. Therefore, the rear mirror serves a dual function; boosting the voltage and re-using infrared thermal photons. This allows the possibility of a practical >50% efficient thermophotovoltaic system. Based on this reflective rear mirror concept, we recently experimentally demonstrated a thermophotovoltaic efficiency of 29.1%, a new efficiency record. In this work,
Zunaid Omair, Luis Pazos, Eli Yablonovitch (2020). Mirrors for efficient energy conversion in optoelectronics (Conference Presentation). , DOI: https://doi.org/10.1117/12.2543918.
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Type
Article
Year
2020
Authors
3
Datasets
0
Total Files
0
Language
en
DOI
https://doi.org/10.1117/12.2543918
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