Simple, Highly Efficient Vacuum-Processed Bulk Heterojunction Solar Cells Based on Merocyanine Dyes
| Autor: | Steven M. Graf, Frank Würthner, Nils M. Kronenberg, Vera Steinmann, Elena V. Tulyakova, Martin R. Lenze, Dirk Hertel, Hannah Bürckstümmer, Klaus Meerholz |
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| Rok vydání: | 2011 |
| Předmět: |
Materials science
Organic solar cell Renewable Energy Sustainability and the Environment business.industry Nanotechnology Hybrid solar cell Quantum dot solar cell Polymer solar cell law.invention chemistry.chemical_compound Stack (abstract data type) chemistry law Solar cell Optoelectronics General Materials Science Merocyanine Charge carrier business |
| Zdroj: | Advanced Energy Materials. 1:888-893 |
| ISSN: | 1614-6832 |
| Popis: | In order to be competitive on the energy market, organic solar cells with higher efficiency are needed. To date, polymer solar cells have retained the lead with efficiencies of up to 8%. However, research on small molecule solar cells has been catching up throughout recent years and is showing similar efficiencies, however, only for more sophisticated multilayer device configurations. In this work, a simple, highly efficient, vacuum-processed small molecule solar cell based on merocyanine dyes – traditional colorants that can easily be mass-produced and purified – is presented. In the past, merocyanines have been successfully introduced in solution-processed as well as vacuum-processed devices, demonstrating efficiencies up to 4.9%. Here, further optimization of devices is achieved while keeping the same simple layer stack, ultimately leading to efficiencies beyond the 6% mark. In addition, physical properties such as the charge carrier transport and the cell performance under various light intensities are addressed. |
| Databáze: | OpenAIRE |
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