Pyrrolo[3,2-b]pyrrole as Electron-Donor Central Core for Solution-Processed Organic Solar Cells
A series of three acceptor-donor-acceptor (A-D-A) small molecules using a tetraaryl-1,4-dihydropyrrolo[3,2-b]pyrrole in their central building block were synthesized and fully characterized. These molecules present high thermal stability and suitable HOMO-LUMO energy levels making them feasible elec...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Universidad de Castilla-La Mancha |
| Repositorio: | RUIdeRA. Repositorio Institucional de la UCLM |
| OAI Identifier: | oai:ruidera.uclm.es:10578/14086 |
| Acceso en línea: | http://hdl.handle.net/10578/14086 |
| Access Level: | acceso abierto |
| Palabra clave: | Materiales orgánicos Solar Cells Processed Organic Solar Cells Pyrrolo[3,2-b]pyrrole Electron-Donor |
| Sumario: | A series of three acceptor-donor-acceptor (A-D-A) small molecules using a tetraaryl-1,4-dihydropyrrolo[3,2-b]pyrrole in their central building block were synthesized and fully characterized. These molecules present high thermal stability and suitable HOMO-LUMO energy levels making them feasible electron donor materials in Bulk Heterojunction Organic Solar Cells (BHJ-OSC). Moreover, theoretical work was also performed obtaining a prediction of a lack of planarity and no p-p stacking, furthermore, the probability of the Highest Occupied Molecular Orbital (HOMO) is distributed on the pyrrole-pyrrole moiety and the probability of the Lowest Unoccupied Molecular Orbital (LUMO) is delocalized, on the contrary, on the phenyl groups. The organic solar cells deliver an open-circuit voltage of 0.99V. However, the overall efficiency is limited due to the low charge mobility measured for holes, 10-9 cm2V-1s-1. |
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