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.
| Document Type: | Article |
|---|---|
| Author: | Lola González-GarcíaORCiD, S. Colodrero, Hernán Míguez, Agustín R. González-ElipeORCiD |
| URN: | urn:nbn:de:bsz:291:415-3498 |
| DOI: | https://doi.org/10.1364/oe.23.0a1642 |
| ISSN: | 1094-4087 |
| Parent Title (English): | Optics Express |
| Volume: | 23 |
| Issue: | 24 |
| First Page: | A1642 |
| Last Page: | A1650 |
| Language: | English |
| 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. |
| Scientific Units: | Structure Formation |
| Open Access: | Open Access |
| Signature: | INM 2015/112 |
| Licence (German): |  Creative Commons - CC BY - Namensnennung 4.0 International |
