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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 degrees C.

Authors:
 [1];  [1];  [2];  [1]; ORCiD logo [3];  [4];  [2];  [5];  [6];  [1]
  1. University of California, Berkeley; Lawrence Berkeley National Laboratory
  2. University of California, Berkeley
  3. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
  4. Swarthmore College
  5. Physical Insight Associates
  6. California Institute of Technology
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
OSTI Identifier:
1545259
Report Number(s):
NREL/JA-5900-73229
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Journal Article
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Additional Journal Information:
Journal Volume: 116; Journal Issue: 31
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; thermophotovoltaic; back mirror; high efficiency

Citation Formats

Omar, Zunaid, Scranton, Gregg, Pazon-Outon, Luis, Xiao, Patrick, Steiner, Myles A, Ganapati, Vidya, Peterson, Per, 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.
Omar, Zunaid, Scranton, Gregg, Pazon-Outon, Luis, Xiao, Patrick, Steiner, Myles A, Ganapati, Vidya, Peterson, Per, Holzrichter, John, Atwater, Harry, & Yablonovitch, Eli. Ultraefficient Thermophotovoltaic Power Conversion by Band-Edge Spectral Filtering. United States. doi:10.1073/pnas.1903001116.
Omar, Zunaid, Scranton, Gregg, Pazon-Outon, Luis, Xiao, Patrick, Steiner, Myles A, Ganapati, Vidya, Peterson, Per, Holzrichter, John, Atwater, Harry, and Yablonovitch, Eli. Tue . "Ultraefficient Thermophotovoltaic Power Conversion by Band-Edge Spectral Filtering". United States. doi:10.1073/pnas.1903001116.
@article{osti_1545259,
title = {Ultraefficient Thermophotovoltaic Power Conversion by Band-Edge Spectral Filtering},
author = {Omar, Zunaid and Scranton, Gregg and Pazon-Outon, Luis and Xiao, Patrick and Steiner, Myles A and Ganapati, Vidya and Peterson, Per 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 degrees 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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