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Title: | Optical absorption enhancement in a hybrid system photonic crystal -Thin substrate for photovoltaic applications |
Authors: | Buencuerpo, Jerónimo CSIC ORCID; Munioz-Camuniez, Luis E.; Dotor-Castilla, María Luisa CSIC ORCID; Postigo, Pablo Aitor CSIC ORCID | Issue Date: | 10-May-2012 | Publisher: | Optical Society of America | Citation: | Optics Express 20(54): A452- A464 (2012) | 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 Optical Society of America. | Publisher version (URL): | http://dx.doi.org/10.1364/OE.20.00A452 | URI: | http://hdl.handle.net/10261/60540 | DOI: | 10.1364/OE.20.00A452 | Identifiers: | issn: 1094-4087 |
Appears in Collections: | (IMN-CNM) Artículos |
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