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Single-step fabrication process of 1-D photonic crystals coupled to nanocolumnar TiO2 layers to improve DSC efficiency

Opened Access Single-step fabrication process of 1-D photonic crystals coupled to nanocolumnar TiO2 layers to improve DSC efficiency

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Autor: González-García, Lola
Colodrero, Silvia
Míguez, Hernán
Rodríguez González-Elipe, Agustín
Fecha: 2015
Publicado en: Optics Express, 23 (24), A1642-A1650.
Tipo de documento: Artículo
Resumen: The present work proposes the use of a TiO2 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 TiO2 electrode and 1 µm TiO2-SiO2 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 TiO2 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 TiO2 films, thus increasing the overall performance of the cell
Cita: González-García, L., Colodrero, S., Míguez, H. y Rodríguez González-Elipe, A. (2015). Single-step fabrication process of 1-D photonic crystals coupled to nanocolumnar TiO2 layers to improve DSC efficiency. Optics Express, 23 (24), A1642-A1650.
Tamaño: 1.150Mb
Formato: PDF

URI: http://hdl.handle.net/11441/64533

DOI: 10.1364/OE.23.0A1642

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