Co-adsorbing effect of bile acids containing bulky amide groups at 3β-position on the photovoltaic performance in dye-sensitized solar cells
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| Autores: | , , , , , , |
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| Formato: | artículo original |
| Fecha de Publicación: | 2019 |
| Descripción: | Co-adsorbing molecules attain certain control in the surrounding of the dyes leading to enhanced efficiencies mainly by affecting the recombination of the photogenerated electrons and aggregation of dyes. Bile acids such as deoxycholic acid (DOA) and chenodeoxycholic acid (CDOA) yield competitive photovoltaic parameters. We harness the steroid backbone of bile acids to chemically modified it at its R3 position attaching sterically demanding amide groups rather than typically terminal hydroxyl groups (3β-position) as in DOA and CDOA. All possible resultant effects on the performance in complete DSSCs were studied by current density-voltage curves (e.g., percentage of efficiency, %η; open-circuit voltage, Voc; short-circuit photocurrent, Jsc; and fill factor, FF), incident photon-to-current conversion efficiency (IPCE), and a set of interfacial data by electrochemical impedance spectroscopy (EIS). Our co-adsorbates stand out by enhancing the conversion efficiencies, being in some cases competitive with photovoltaic parameters of DOA and CDOA. |
| País: | Kérwá |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Kérwá |
| OAI Identifier: | oai:kerwa.ucr.ac.cr:10669/81413 |
| Acceso en línea: | https://www-sciencedirect-com.ezproxy.sibdi.ucr.ac.cr/science/article/pii/S0038092X19307091 https://hdl.handle.net/10669/81413 |
| Palabra clave: | Energía solar Celdas sensibilizadas con tintes Ácidos biliares Co-adsorption Bile acids Dye-sensitized solar cells Aggregation |