Accurate calibration of thermophotovoltaic efficiency

Zunaid Omair; Luis M. Pazos-Outon; Myles A. Steiner; Eli Yablonovitch

doi:10.1186/s43074-020-00021-x

Accurate calibration of thermophotovoltaic efficiency

doi: 10.1186/s43074-020-00021-x

基金项目:

Experimental design, measurement, and data analysis were supported by the Department of Energy (DOE) "LightMaterial Interactions in Energy Conversion" Energy Frontier Research Center under Grant DE-SC0001293, DOE "Photonics at Thermodynamic Limit" Energy Frontier Research Center under Grant DE-SC00019140, and Kavli Energy NanoScience Institute Heising-Simons Junior Postdoctoral Fellowship of the University of California, Berkeley. This work was co-authored by the Alliance for Sustainable Energy, LLC, the manager and operator of the National Renewable Energy Laboratory for the U.S. Department of Energy (DOE) under Contract No. DE-AC36-08GO28308. The views expressed in the article do not necessarily represent the views of the DOE or the U.S. Government. The U.S. Government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this work or allow others to do so, for U.S. Government purposes.

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出版历程
- 收稿日期: 2020-08-13
- 录用日期: 2020-10-06
- 网络出版日期: 2020-10-20

Accurate calibration of thermophotovoltaic efficiency

1.
Department of EECS, University of California, Berkeley, Berkeley, USA
2.
National Renewable Energy Laboratory, Golden, CO, USA

Funds:

摘要

摘要: The new record efficiency in Thermophotovoltaics relies upon a highly reflective rear mirror. The excellent rear mirror boosts voltage by enhancing the luminescence extraction, and separately also reflects low energy photons, which would otherwise be useless in thermophotovoltaics. The reflected low energy photons reheat the thermal emitter, and regenerate above-bandgap energy photons. The efficiency calibration for such regenerative thermophotovoltaics depends on several factors, yet predominantly on the accurate measurement of the rear mirror reflectivity. Here, we report on the technique for accurate measurement of mirror reflectivity, and of record thermophotovoltaic efficiency 29.1 ±0.6%, at 1207℃.
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Abstract: The new record efficiency in Thermophotovoltaics relies upon a highly reflective rear mirror. The excellent rear mirror boosts voltage by enhancing the luminescence extraction, and separately also reflects low energy photons, which would otherwise be useless in thermophotovoltaics. The reflected low energy photons reheat the thermal emitter, and regenerate above-bandgap energy photons. The efficiency calibration for such regenerative thermophotovoltaics depends on several factors, yet predominantly on the accurate measurement of the rear mirror reflectivity. Here, we report on the technique for accurate measurement of mirror reflectivity, and of record thermophotovoltaic efficiency 29.1 ± 0.6%, at 1207 °C.
- Thermophotovoltaics /
- Heat engine /
- Calibration /
- Energy /
- Photovoltaics

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参考文献(20)

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