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Single-step fabrication process of 1-D photonic crystals coupled to nanocolumnar TiO 2 layers to improve DSC efficiency

  • The present work proposes the use of a TiO 2 electrode coupled to a one-dimensional photonic crystal (1DPC), all formed by the sequential deposition of nanocolumnar thin films by physical vapor oblique angle deposition (PV-OAD), to enhance the optical and electrical performance of DSCs while transparency is preserved. We demonstrate that this approach allows building an architecture combining a non-dispersive 3 µm of TiO 2 electrode and 1 µm TiO 2 -SiO 2 1DPC, both columnar, in a single-step process. The incorporation of the photonic structure is responsible for a rise of 30% in photovoltaic efficiency, as compared with a transparent cell with a single TiO 2 electrode. Detailed analysis of the spectral dependence of the photocurrent demonstrates that the 1DPC improves light harvesting efficiency by both back reflection and optical cavity modes confinement within the TiO 2 films, thus increasing the overall performance of the cell.

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Document Type:Article
Author:Lola González-GarcíaORCiD, S. Colodrero, Hernán Míguez, Agustín R. González-ElipeORCiD
Parent Title (English):Optics Express
First Page:A1642
Last Page:A1650
Year of first Publication:2015
Release Date:2022/11/18
Tag:deposition and fabrication; materials; multilayers; optical devices; photonic crystals; thin films
Impact:03.148 (2015)
Funding Information:European Research Council under the European Union's Seventh Framework Programme (FP7/2007-2013) ERC grant agreement n° 307081 (POLIGHT), the Spanish Ministry of Economy and Competitiveness under grants CONSOLIDER CSD2008-00023 and CSD2007-00007, MAT2011-23593, MAT2013-40852-R and MAT2013-42900-P, and the Junta de Andalucía under Projects TEP8067, FQM-6900, FQM 2265 and FQM 579.
Open Access:Open Access
Signature:INM 2015/112
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International