Correlation Between Structural and Optical Properties of Composite Polymer/Fullerene Films for Organic Solar Cells
| Autor: | Pavel Schilinsky, Christoph Waldauf, Gerhard Gobsch, Sofiya Raleva, Tobias Erb, Bernd Stühn, Christoph J. Brabec, Uladzimir Zhokhavets |
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| Rok vydání: | 2005 |
| Předmět: |
Materials science
Organic solar cell Polymer-fullerene bulk heterojunction solar cells Hybrid solar cell Quantum dot solar cell Condensed Matter Physics Polymer solar cell Electronic Optical and Magnetic Materials Biomaterials Crystallinity Chemical engineering Electrochemistry Organic chemistry Crystallite Thin film |
| Zdroj: | Advanced Functional Materials. 15:1193-1196 |
| ISSN: | 1616-3028 1616-301X |
| Popis: | We investigate thin poly(3-hexylthiophene-2,5-diyl)/[6,6]-phenyl C61 butyric acid methyl ester (P3HT/PCBM) films, which are widely used as active layers in plastic solar cells. Their structural properties are studied by grazing-incidence X-ray diffraction (XRD). The size and the orientation of crystalline P3HT nanodomains within the films are determined. PCBM crystallites are not detected in thin films by XRD. Upon annealing, the P3HT crystallinity increases, leading to an increase in the optical absorption and spectral photocurrent in the low-photon-energy region. As a consequence, the efficiency of P3HT/PCBM solar cells is significantly increased. A direct relation between efficiency and P3HT crystallinity is demonstrated. |
| Databáze: | OpenAIRE |
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