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Energy Express

  • Editor: Christian Seassal
  • Vol. 21, Iss. S3 — May. 6, 2013
  • pp: A515–A527

Photonic crystals and optical mode engineering for thin film photovoltaics

Guillaume Gomard, Romain Peretti, Emmanuel Drouard, Xianqin Meng, and Christian Seassal  »View Author Affiliations

Optics Express, Vol. 21, Issue S3, pp. A515-A527 (2013)

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In this paper, we present the design, analysis, and experimental results on the integration of 2D photonic crystals in thin film photovoltaic solar cells based on hydrogenated amorphous silicon. We introduce an analytical approach based on time domain coupled mode theory to investigate the impact of the photon lifetime and anisotropy of the optical resonances on the absorption efficiency. Specific design rules are derived from this analysis. We also show that, due to the specific properties of the photonic crystal resonances, the angular acceptance of such solar cells is particularly high. Rigorous Coupled Wave Analysis simulations show that the absorption in the a-Si:H active layers, integrated from 300 to 750nm, is only decreased from 65.7% to 60% while the incidence angle is increased from 0 to 55°. Experimental results confirm the stability of the incident light absorption in the patterned stack, for angles of incidence up to 50°.

© 2013 OSA

OCIS Codes
(040.5350) Detectors : Photovoltaic
(350.6050) Other areas of optics : Solar energy
(050.5298) Diffraction and gratings : Photonic crystals

ToC Category:
Light Trapping in Solar Cells

Original Manuscript: February 4, 2013
Revised Manuscript: March 17, 2013
Manuscript Accepted: March 18, 2013
Published: April 22, 2013

Virtual Issues
Renewable Energy and the Environment (2013) Optics Express

Guillaume Gomard, Romain Peretti, Emmanuel Drouard, Xianqin Meng, and Christian Seassal, "Photonic crystals and optical mode engineering for thin film photovoltaics," Opt. Express 21, A515-A527 (2013)

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