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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Other documents of the author: Soto-Navarro, Andrea; Alfaro, Ariel; Soto-Tellini, Víctor Hugo; Moehl, Thomas; Barea, Eva M; Fabregat-Santiago, Francisco; Pineda, Leslie William
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comunitat-uji-handle2:10234/2507
comunitat-uji-handle3:10234/6973
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https://doi.org/10.1016/j.solener.2019.07.047 |
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Title
Co-adsorbing effect of bile acids containing bulky amide groups at 3β-position on the photovoltaic performance in dye-sensitized solar cellsAuthor (s)
Date
2019Publisher
ElsevierISSN
0038-092X; 1471-1257Bibliographic citation
SOTO-NAVARRO, Andrea, et al. Co-adsorbing effect of bile acids containing bulky amide groups at 3β-position on the photovoltaic performance in dye-sensitized solar cells. Solar Energy, 2019, vol. 189, p. 94-102Type
info:eu-repo/semantics/articlePublisher version
https://www.sciencedirect.com/science/article/pii/S0038092X19307091Version
info:eu-repo/semantics/publishedVersionSubject
Abstract
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 ... [+]
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. [-]
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Solar Energy, 2019, vol. 189, p. 94-102Investigation project
The authors are thankful to Centro de Electroquímica y Energía Química (CELEQ), Escuela de Química, Sistema de Estudios de Posgrado (SEP) and Vicerrectoría de Investigación, Universidad de Costa Rica (project number 804-B2-A01) for financial support. A. S.-N. greatly acknowledges an Orlando Bravo fellowship by CELEQ, Universidad de Costa Rica, and M.S. Paola Fuentes (CELEQ) for fruitful discussions about statistical analysis; and is very grateful with Grup de Dispositius Fotovoltaics i Optoelectrònics, from Universidad Jaumé I and Prof. Juan Bisquert, for a research stay.Rights
© 2019 International Solar Energy Society. Published by Elsevier Ltd. All rights reserved.
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