Improved Efficiency in Organic Solar Cells Based on A2-D-A1-D-A2 Nonfullerene Acceptors with a Benzoselenadiazole Core Induced by Higher Dipole Moment and Dielectric Constant
Two A2-D-A1-D-A2 nonfused small molecules (NC1 and NC2) have been synthesized. The compounds contain benzoselenadiazole as a core acceptor (A1), cyclopentadithiophene as a donor (D), and rhodanine and CN-rhodanine as terminal acceptors (A2), and their optical and electrochemical properties have been...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2023 |
| País: | España |
| Institución: | Universidad de Castilla-La Mancha |
| Repositorio: | RUIdeRA. Repositorio Institucional de la UCLM |
| OAI Identifier: | oai:ruidera.uclm.es:10578/36861 |
| Acceso en línea: | https://hdl.handle.net/10578/36861 |
| Access Level: | acceso abierto |
| Palabra clave: | Organic solar cells Nonfullerene acceptors Benzoselenadiazole Dipole moment Dielectric constant Energy transfer Charge recombination |
| Sumario: | Two A2-D-A1-D-A2 nonfused small molecules (NC1 and NC2) have been synthesized. The compounds contain benzoselenadiazole as a core acceptor (A1), cyclopentadithiophene as a donor (D), and rhodanine and CN-rhodanine as terminal acceptors (A2), and their optical and electrochemical properties have been investigated. The dielectric constant and dipole moment of NC2 are higher than that of NC1, and this leads to a lower binding energy for the excitons generated after the absorption of photons. |
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