New PV conversion phenomena on very high efficiency silicon devices for small footprint cells (automotive)

Zbigniew T. Kuznicki; Patrick Meyrueis

doi:10.1117/12.852687

20 April 2010 New PV conversion phenomena on very high efficiency silicon devices for small footprint cells (automotive)

Zbigniew T. Kuznicki, Patrick Meyrueis

Author Affiliations +

Proceedings Volume 7675, Photonics in the Transportation Industry: Auto to Aerospace III; 76750R (2010) https://doi.org/10.1117/12.852687
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

Progress in PV conversion efficiency requires optoelectronic breakthroughs. Completing one-step PV conversion by additional new low-energy mechanisms is one of the most important challenges of modern photovoltaics. Si is a basic PV material which cannot be efficient enough in its bulk or thin-film form because of its indirect bandgap. One way has been indicated by multi-interface solar cell on single-crystal Si combining nanostructured Si materials and device improvements leading to a PV metamaterial conditioned simultaneously both electrically and mechanically by the built-in electrical and local stress fields. This allows a two membrane-like conversion cycle where a nanoscale Si-layered system plays a specific role due to an active interface and crystalline defects. We demonstrate a step-like collection efficiency curve proving new low-energy (0.3 eV) carrier generation and multiplication has been measured under solar intensities on dedicated test structures.

Citation Download Citation

Zbigniew T. Kuznicki and Patrick Meyrueis "New PV conversion phenomena on very high efficiency silicon devices for small footprint cells (automotive)", Proc. SPIE 7675, Photonics in the Transportation Industry: Auto to Aerospace III, 76750R (20 April 2010); https://doi.org/10.1117/12.852687

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