Pyranylidene/trifluoromethylbenzoic acid-based chromophores for dye-sensitized solar cells
The synthesis and photovoltaic study of five dyes based on 4H-pyranylidene moiety as donor moiety is reported. A thiophene unit conjugated with/without an ethynyl bond acts as the π-relay and benzoic acid as the anchor group with/without a trifluoromethyl group. Their electrochemical and optical pro...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/280632 |
| Acceso en línea: | http://hdl.handle.net/10261/280632 |
| Access Level: | acceso abierto |
| Palabra clave: | D-π-A dyes 4H-pyranylidene DSSC Trifluoromethyl group |
| Sumario: | The synthesis and photovoltaic study of five dyes based on 4H-pyranylidene moiety as donor moiety is reported. A thiophene unit conjugated with/without an ethynyl bond acts as the π-relay and benzoic acid as the anchor group with/without a trifluoromethyl group. Their electrochemical and optical properties are analyzed by using a joint experimental and theoretical approach. The presence of the trifluoromethyl group leads to an enhancement of the molar extinction coefficient, being slightly when a hexyl chain is introduced in the thiophene ring, but does not modify the oxidation potential. |
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