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Energy Express

Energy Express

  • Editor: Bernard Kippelen
  • Vol. 20, Iss. S4 — Jul. 2, 2012
  • pp: A452–A464

Optical absorption enhancement in a hybrid system photonic crystal – thin substrate for photovoltaic applications

Jeronimo Buencuerpo, Luis E. Munioz-Camuniez, Maria L. Dotor, and Pablo A. Postigo  »View Author Affiliations


Optics Express, Vol. 20, Issue S4, pp. A452-A464 (2012)
http://dx.doi.org/10.1364/OE.20.00A452


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Abstract

A hybrid approach for light trapping using photonic crystal nanostructures (nanorods, nanopillars or nanoholes) on top of an ultra thin film as a substrate is presented. The combination of a nanopatterned layer with a thin substrate shows an enhanced optical absorption than equivalent films without patterning and can compete in performance with nanostructured systems without a substrate. The designs are tested in four relevant materials: amorphous silicon (a-Si), crystalline silicon (Si), gallium arsenide (GaAs) and indium phosphide (InP). A consistent enhancement is observed for all of the materials when using a thin hybrid system (300 nm) even compared to the non patterned thin film with an anti-reflective coating (ARC). A realistic solar cell structure composed of a hybrid system with a layer of indium tin oxide (ITO) an ARC and a back metal layer is performed, showing an 18% of improvement for the nanostructured device.

© 2012 OSA

OCIS Codes
(040.5350) Detectors : Photovoltaic
(160.5298) Materials : Photonic crystals
(310.6845) Thin films : Thin film devices and applications

ToC Category:
Photovoltaics

History
Original Manuscript: December 16, 2011
Revised Manuscript: April 24, 2012
Manuscript Accepted: April 26, 2012
Published: May 10, 2012

Citation
Jeronimo Buencuerpo, Luis E. Munioz-Camuniez, Maria L. Dotor, and Pablo A. Postigo, "Optical absorption enhancement in a hybrid system photonic crystal – thin substrate for photovoltaic applications," Opt. Express 20, A452-A464 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-S4-A452


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