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Title: Ultraefficient thermophotovoltaic power conversion by band-edge spectral filtering

Abstract

Thermophotovoltaic 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 solar efficiency. Now we report that the rear mirror can be used to create thermophotovoltaic systems with unprecedented high thermophotovoltaic efficiency. This mirror reflects low-energy infrared photons back into the heat source, recovering their energy. Therefore, the rear mirror serves a dual function; boosting the voltage and reusing infrared thermal photons. This allows the possibility of a practical >50% efficient thermophotovoltaic system. Based on this reflective rear mirror concept, we report a thermophotovoltaic efficiency of 29.1 ± 0.4% at an emitter temperature of 1,207 °C.

Authors:
ORCiD logo; ; ; ; ; ; ; ; ; ORCiD logo
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
OSTI Identifier:
1561936
Alternate Identifier(s):
OSTI ID: 1545259
Report Number(s):
NREL/JA-5900-73229
Journal ID: ISSN 0027-8424
Grant/Contract Number:  
AC36-08GO28308; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Additional Journal Information:
Journal Volume: 116; Journal Issue: 31; Journal ID: ISSN 0027-8424
Publisher:
National Academy of Sciences, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; thermophotovoltaic; back mirror; high efficiency; 30 DIRECT ENERGY CONVERSION; energy; photovoltaics; thermophotovoltaics; TPV; solar

Citation Formats

Omair, Zunaid, Scranton, Gregg, Pazos-Outón, Luis M., Xiao, T. Patrick, Steiner, Myles A., Ganapati, Vidya, Peterson, Per F., Holzrichter, John, Atwater, Harry, and Yablonovitch, Eli. Ultraefficient thermophotovoltaic power conversion by band-edge spectral filtering. United States: N. p., 2019. Web. doi:10.1073/pnas.1903001116.
Omair, Zunaid, Scranton, Gregg, Pazos-Outón, Luis M., Xiao, T. Patrick, Steiner, Myles A., Ganapati, Vidya, Peterson, Per F., Holzrichter, John, Atwater, Harry, & Yablonovitch, Eli. Ultraefficient thermophotovoltaic power conversion by band-edge spectral filtering. United States. doi:10.1073/pnas.1903001116.
Omair, Zunaid, Scranton, Gregg, Pazos-Outón, Luis M., Xiao, T. Patrick, Steiner, Myles A., Ganapati, Vidya, Peterson, Per F., Holzrichter, John, Atwater, Harry, and Yablonovitch, Eli. Tue . "Ultraefficient thermophotovoltaic power conversion by band-edge spectral filtering". United States. doi:10.1073/pnas.1903001116. https://www.osti.gov/servlets/purl/1561936.
@article{osti_1561936,
title = {Ultraefficient thermophotovoltaic power conversion by band-edge spectral filtering},
author = {Omair, Zunaid and Scranton, Gregg and Pazos-Outón, Luis M. and Xiao, T. Patrick and Steiner, Myles A. and Ganapati, Vidya and Peterson, Per F. and Holzrichter, John and Atwater, Harry and Yablonovitch, Eli},
abstractNote = {Thermophotovoltaic 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 solar efficiency. Now we report that the rear mirror can be used to create thermophotovoltaic systems with unprecedented high thermophotovoltaic efficiency. This mirror reflects low-energy infrared photons back into the heat source, recovering their energy. Therefore, the rear mirror serves a dual function; boosting the voltage and reusing infrared thermal photons. This allows the possibility of a practical >50% efficient thermophotovoltaic system. Based on this reflective rear mirror concept, we report a thermophotovoltaic efficiency of 29.1 ± 0.4% at an emitter temperature of 1,207 °C.},
doi = {10.1073/pnas.1903001116},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 31,
volume = 116,
place = {United States},
year = {2019},
month = {7}
}

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