Multistage PV conversion using a metamaterial based on the nanostructured Si

Kuznicki, Z.T.; Meyrueis, Patrick

doi:10.1109/pvsc.2008.4922758

Cited by 2 publications

(2 citation statements)

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“…On the other hand, the superposition of more or less known conversion mechanisms puts a single photon absorption at the head of a conversion cycle, i.e. one obtains multistage processing [5][6][7]. As an analogy we can cite the cycle of semiconductor laser pumping followed by light emission needing several energy levels.…”

Section: Pv Metamaterials and Membranes Of A Multiplying Tandem Cellmentioning

confidence: 99%

“…The low-energy generation (with the specific energy E δ = 0.274 eV) and multiplication with a high probability of 0.8 [6,17] allow a thermodynamic efficiency of more than 60% [3]. The experiments reported here open the way to different applications, especially in the areas of nanophotovoltaics [21] and ultrahigh efficient PV conversion.…”

Section: Conclusion Remarksmentioning

confidence: 99%

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

Kuznicki

Meyrueis

2010

SPIE Proceedings

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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.

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Section: Pv Metamaterials and Membranes Of A Multiplying Tandem Cellmentioning

confidence: 99%

Section: Conclusion Remarksmentioning

confidence: 99%