Improving photovoltaics by adding extra terminals to extract hot carriers
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866911062119415808 |
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| author | Bertin-Johannet, Bruno Thuégaz, Thibaut Splettstoesser, Janine Whitney, Robert S. |
| author_facet | Bertin-Johannet, Bruno Thuégaz, Thibaut Splettstoesser, Janine Whitney, Robert S. |
| contents | Photovoltaic cells usually have two terminals, one collecting electrons and the other collecting holes. Can more terminals improve such solar cells? Energy-filtering terminals could collect "hot" carriers (electrons or holes not yet relaxed to the band edge), with other terminals for low-energy carriers. For collection faster than carrier-phonon relaxation, we predict four-terminal cells with higher power output than optimal two-terminal cells -- more than 40% higher for fast carrier collection. Similar effects will occur in multi-terminal thermoelectrics exploiting non-equilibrium distributions |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_13279 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Improving photovoltaics by adding extra terminals to extract hot carriers Bertin-Johannet, Bruno Thuégaz, Thibaut Splettstoesser, Janine Whitney, Robert S. Mesoscale and Nanoscale Physics Photovoltaic cells usually have two terminals, one collecting electrons and the other collecting holes. Can more terminals improve such solar cells? Energy-filtering terminals could collect "hot" carriers (electrons or holes not yet relaxed to the band edge), with other terminals for low-energy carriers. For collection faster than carrier-phonon relaxation, we predict four-terminal cells with higher power output than optimal two-terminal cells -- more than 40% higher for fast carrier collection. Similar effects will occur in multi-terminal thermoelectrics exploiting non-equilibrium distributions |
| title | Improving photovoltaics by adding extra terminals to extract hot carriers |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2507.13279 |