Role of spectral non-idealities in the design of solar thermophotovoltaics
To bridge the gap between theoretically predicted and experimentally demonstrated efficiencies of solar thermophotovoltaics (STPVs), we consider the impact of spectral non-idealities on the efficiency and the optimal design of STPVs over a range of PV bandgaps (0.45-0.80 eV) and optical concentratio...
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| Format: | Article |
| Language: | en_US |
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Optical Society of America
2015
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| Online Access: | http://hdl.handle.net/1721.1/93172 https://orcid.org/0000-0002-9897-2670 https://orcid.org/0000-0001-7045-1200 |
| _version_ | 1826216037328093184 |
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| author | Lenert, Andrej Nam, Youngsuk Wang, Evelyn N. Bierman, David Matthew |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Lenert, Andrej Nam, Youngsuk Wang, Evelyn N. Bierman, David Matthew |
| author_sort | Lenert, Andrej |
| collection | MIT |
| description | To bridge the gap between theoretically predicted and experimentally demonstrated efficiencies of solar thermophotovoltaics (STPVs), we consider the impact of spectral non-idealities on the efficiency and the optimal design of STPVs over a range of PV bandgaps (0.45-0.80 eV) and optical concentrations (1-3,000x). On the emitter side, we show that suppressing or recycling sub-bandgap radiation is critical. On the absorber side, the relative importance of high solar absorptance versus low thermal emittance depends on the energy balance. Both results are well-described using dimensionless parameters weighting the relative power density above and below the cutoff wavelength. This framework can be used as a guide for materials selection and targeted spectral engineering in STPVs. |
| first_indexed | 2024-09-23T16:41:18Z |
| format | Article |
| id | mit-1721.1/93172 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:41:18Z |
| publishDate | 2015 |
| publisher | Optical Society of America |
| record_format | dspace |
| spelling | mit-1721.1/931722022-10-03T07:35:00Z Role of spectral non-idealities in the design of solar thermophotovoltaics Lenert, Andrej Nam, Youngsuk Wang, Evelyn N. Bierman, David Matthew Massachusetts Institute of Technology. Department of Mechanical Engineering Wang, Evelyn N. Lenert, Andrej Bierman, David Matthew Wang, Evelyn N. To bridge the gap between theoretically predicted and experimentally demonstrated efficiencies of solar thermophotovoltaics (STPVs), we consider the impact of spectral non-idealities on the efficiency and the optimal design of STPVs over a range of PV bandgaps (0.45-0.80 eV) and optical concentrations (1-3,000x). On the emitter side, we show that suppressing or recycling sub-bandgap radiation is critical. On the absorber side, the relative importance of high solar absorptance versus low thermal emittance depends on the energy balance. Both results are well-described using dimensionless parameters weighting the relative power density above and below the cutoff wavelength. This framework can be used as a guide for materials selection and targeted spectral engineering in STPVs. United States. Dept. of Energy. Office of Basic Energy Sciences (DE-FG02-09ER46577) 2015-01-23T17:19:17Z 2015-01-23T17:19:17Z 2014-10 2014-09 Article http://purl.org/eprint/type/JournalArticle 1094-4087 http://hdl.handle.net/1721.1/93172 Lenert, Andrej, Youngsuk Nam, David M. Bierman, and Evelyn N. Wang. “Role of Spectral Non-Idealities in the Design of Solar Thermophotovoltaics.” Optics Express 22, no. S6 (2014): A1604. https://orcid.org/0000-0002-9897-2670 https://orcid.org/0000-0001-7045-1200 en_US http://dx.doi.org/10.1364/OE.22.0A1604 Optics Express Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Optical Society of America Lenert |
| spellingShingle | Lenert, Andrej Nam, Youngsuk Wang, Evelyn N. Bierman, David Matthew Role of spectral non-idealities in the design of solar thermophotovoltaics |
| title | Role of spectral non-idealities in the design of solar thermophotovoltaics |
| title_full | Role of spectral non-idealities in the design of solar thermophotovoltaics |
| title_fullStr | Role of spectral non-idealities in the design of solar thermophotovoltaics |
| title_full_unstemmed | Role of spectral non-idealities in the design of solar thermophotovoltaics |
| title_short | Role of spectral non-idealities in the design of solar thermophotovoltaics |
| title_sort | role of spectral non idealities in the design of solar thermophotovoltaics |
| url | http://hdl.handle.net/1721.1/93172 https://orcid.org/0000-0002-9897-2670 https://orcid.org/0000-0001-7045-1200 |
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