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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 15 — Jul. 18, 2011
  • pp: 14200–14209

Plasmonic backcontact grating for P3HT:PCBM organic solar cells enabling strong optical absorption increased in all polarizations

Mustafa Akin Sefunc, Ali Kemal Okyay, and Hilmi Volkan Demir  »View Author Affiliations

Optics Express, Vol. 19, Issue 15, pp. 14200-14209 (2011)

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In P3HT:PCBM based organic solar cells we propose and demonstrate numerically plasmonic backcontact grating architectures for strong optical absorption enhanced in both transverse-magnetic and transverse-electric polarizations. Even when the active material is partially replaced by the metallic grating (without increasing the active layer film thickness), we show computationally that the light absorption in thin-film P3HT:PCBM is increased by a maximum factor of ~21% considering both polarizations under AM1.5G solar radiation and over a half-maximum incidence angle of 45° (where the enhancement drops to its half) compared to the same cell without a grating. This backcontact grating outperforms the typical plasmonic grating placed in PEDOT:PSS layer.

© 2011 OSA

OCIS Codes
(040.5350) Detectors : Photovoltaic
(050.2770) Diffraction and gratings : Gratings
(240.6680) Optics at surfaces : Surface plasmons
(350.6050) Other areas of optics : Solar energy
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Solar Energy

Original Manuscript: May 9, 2011
Revised Manuscript: June 21, 2011
Manuscript Accepted: June 22, 2011
Published: July 11, 2011

Mustafa Akin Sefunc, Ali Kemal Okyay, and Hilmi Volkan Demir, "Plasmonic backcontact grating for P3HT:PCBM organic solar cells enabling strong optical absorption increased in all polarizations," Opt. Express 19, 14200-14209 (2011)

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