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Abstract
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| Intermediate band solar cells (IBSCs) promise photovoltaic conversion efficiency above that of single gap solar cells thanks to the absorption of below-bandgap energy photons. The principles of operation of these solar cells (absorption of below-bandgap energy photons and output voltage exceeding photon energy/electron charge) have been demonstrated in quantum dot (QD) systems but their actual impact in increasing the solar cell efficiency is minimal. Recently, and surprisingly, the operation of QD-IBSCs based on hole confinement (instead of electron confinement) have also been demonstrated. In this presentation we will review our present understanding of the operation of these cells in an attempt to stimulate discussion about what are the next steps that in research should be taken. Discussion will not be restricted to QD systems but to other systems suggested to implement IBSCs such as, for example, those based on the insertion of impurities or those exploiting the band anti-crossing mechanism. A review of some of the most recent proposals for implementing these solar cells will also be included. | |
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International
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Si |
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Congress
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CIMTEC - 8th Forum on New Materials |
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960 |
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Place
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Perugia, Italia |
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Reviewers
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Si |
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ISBN/ISSN
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CDPO8UPM |
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Start Date
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10/06/2018 |
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End Date
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14/06/2018 |
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From page
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1 |
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To page
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2 |
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Proceedings of CIMTEC - 8th Forum on New Materials |