Co-adsorbing effect of bile acids containing bulky amide groups at 3β-position on the photovoltaic performance in dye-sensitized solar cells
artículo original
Fecha
2019Autor
Soto Navarro, Andrea
Alfaro Vargas, Ariel
Soto Tellini, Victor Hugo
Moehl, Thomas
Barea, Eva M.
Fabregat Santiago, Francisco
Pineda Cedeño, Leslie William
Metadatos
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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.
External link to the item
10.1016/j.solener.2019.07.047Colecciones
- Química [360]