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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 11 — May. 21, 2012
  • pp: 12213–12221

Broadband light absorption enhancement in polymer photovoltaics using metal nanowall gratings as transparent electrodes

Zhuo Ye, Sumit Chaudhary, Ping Kuang, and Kai-Ming Ho  »View Author Affiliations

Optics Express, Vol. 20, Issue 11, pp. 12213-12221 (2012)

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The authors investigate light absorption in organic solar cells in which indium tin oxide (ITO) is replaced by a new metallic architecture (grating) as a transparent electrode. Different from typical metal nanowire gratings, our gratings consist of metal nanowalls with nanoscale footprint and (sub)microscale height [Adv. Mater. 23, 2469 (2011)], thus ensuring high optical transmittance and electrical conductivity. Simulations reveal that a broadband and polarization-insensitive light absorption enhancement is achieved via two mechanisms, when such silver nanowall gratings are employed in P3HT:PCBM based solar cells. Overall absorption enhanced by ~23% compared to a reference cell with ITO electrode.

© 2012 OSA

OCIS Codes
(160.4890) Materials : Organic materials
(350.2770) Other areas of optics : Gratings
(350.6050) Other areas of optics : Solar energy

ToC Category:
Solar Energy

Original Manuscript: January 19, 2012
Revised Manuscript: March 21, 2012
Manuscript Accepted: March 28, 2012
Published: May 15, 2012

Zhuo Ye, Sumit Chaudhary, Ping Kuang, and Kai-Ming Ho, "Broadband light absorption enhancement in polymer photovoltaics using metal nanowall gratings as transparent electrodes," Opt. Express 20, 12213-12221 (2012)

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