Photonic band-engineering absorption enhancement of amorphous silicon for solar cells

Ounsi El Daif, Emmanuel Drouard, Guillaume Gomard, Yeonsang Park, Anne Kaminski, Alain Fave, Mustapha Lemiti, Xavier Letartre, Pierre Viktorovitch, Sungmo Ahn, Heonsu Jeon, Christian Seassal

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

We report on enhancement of thin layer absorption through photonic band-engineering of a photonic crystal structure. We realized amorphous silicon (aSi) photonic crystals, where slow light modes improve absorption efficiency. We show through simulation that an increase of the absorption by a factor of 1.5 is expected for a model film of 100nm of aSi. The proposal is then validated by an experimental demonstration, showing a 50% increase of the absorption of a demonstrator layer of 1μm thick aSi over a spectral range of 0.32 0.76μm. This shows new possibilities of increasing the efficiency of thin film photovoltaic cells. Photonic crystal based architecture are proposed and discussed.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume7411
DOIs
Publication statusPublished - 2009
Externally publishedYes
EventNanoscale Photonic and Cell Technologies for Photovoltaics II - San Diego, CA, United States
Duration: 2 Aug 20094 Aug 2009

Other

OtherNanoscale Photonic and Cell Technologies for Photovoltaics II
CountryUnited States
CitySan Diego, CA
Period2/8/094/8/09

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Keywords

  • Photonic crystals
  • Slow light
  • Solar cells
  • Thin films

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

El Daif, O., Drouard, E., Gomard, G., Park, Y., Kaminski, A., Fave, A., Lemiti, M., Letartre, X., Viktorovitch, P., Ahn, S., Jeon, H., & Seassal, C. (2009). Photonic band-engineering absorption enhancement of amorphous silicon for solar cells. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 7411). [74110O] https://doi.org/10.1117/12.825654