Carrier multiplication applicability for photovoltaics; a critical analysis

The applicability of carrier multiplication (CM) in photovoltaics (PVs) is analysed based on the experimentally observed behaviour. In the analysis, detailed balance is used to estimate the upper efficiency limit for PVs including empirically approximated CM effects. It is found that practically CM...

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Veröffentlicht in:	Journal of physics. D, Applied physics Applied physics, 2013-03, Vol.46 (12), p.125102-1-5
1. Verfasser:	Alharbi, Fahhad H
Format:	Artikel
Sprache:	eng
Schlagworte:	Approximation Carriers Cross-disciplinary physics: materials science rheology Empirical analysis Estimates Exact sciences and technology Materials science Multiplication Nanoscale materials and structures: fabrication and characterization Photovoltaic cells Physics Quantum dots Solar cells
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Zusammenfassung:	The applicability of carrier multiplication (CM) in photovoltaics (PVs) is analysed based on the experimentally observed behaviour. In the analysis, detailed balance is used to estimate the upper efficiency limit for PVs including empirically approximated CM effects. It is found that practically CM enhancement is very insignificant using homogeneous quantum dots. Considering this besides the practical challenges to realize CM using such structures, its applicability to exceed the Shockley-Queisser limit is questionable and not practical.
ISSN:	0022-3727 1361-6463
DOI:	10.1088/0022-3727/46/12/125102