Determination of the optical constants of bulk heterojunction active layers from standard solar cell measurements
| Autor: | Martin R. Lenze, Klaus Meerholz, Christoph Lentjes, Thorsten Erich Umbach |
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| Rok vydání: | 2014 |
| Předmět: |
Theory of solar cells
Materials science Analytical chemistry General Chemistry Condensed Matter Physics Transfer matrix Polymer solar cell Electronic Optical and Magnetic Materials Active layer law.invention Biomaterials law Solar cell Materials Chemistry Quantum efficiency Electrical and Electronic Engineering Refractive index Current density |
| Zdroj: | Organic Electronics. 15:3584-3589 |
| ISSN: | 1566-1199 |
| DOI: | 10.1016/j.orgel.2014.10.001 |
| Popis: | The determination of the optical constants n ( λ ) and k ( λ ) for organic bulk heterojunction (BHJ) active layers from standard solar cell measurements is presented. We show for a small molecule based as well as for polymer solar cells that the complex refractive index can be derived from the external quantum efficiency ( EQE ) in combination with current–voltage curves obtained from a series of devices with different active layer thicknesses. The results are compared to those obtained via established techniques and the impact of differences in n ( λ ) and k ( λ ) on the solar cells is shown by simulation of the current density using a transfer matrix model. |
| Databáze: | OpenAIRE |
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