Alkali Iodide Deep Eutectic Solvents as Alternative Electrolytes for Dye Sensitized Solar Cells

Detalhes bibliográficos
Autor(a) principal: Cruz, Hugo
Data de Publicação: 2021
Outros Autores: Pinto, Ana L., Jordão, Noémi, Neves, Luísa A., Branco, Luís Alexandre Almeida Fernandes Cobra
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/135098
Resumo: PTDC/QEQ- QFI/1971/2014 POCI- 01-0145-FEDER-016387
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spelling Alkali Iodide Deep Eutectic Solvents as Alternative Electrolytes for Dye Sensitized Solar CellsDeep eutectic solvents (DES)ElectrolytesDye sensitized solar cells (DSSC)PTDC/QEQ- QFI/1971/2014 POCI- 01-0145-FEDER-016387Different alkali deep eutectic solvents (DES), such as LiI:nEG, NaI:nEG, and KI:nEG, have been tested as electrolytes for dye sensitized solar cells (DSSCs). These DSSCs were prepared using pure DES or, alternatively, DES combined with different amounts of iodine (I2). The most important parameters, such as open circuit voltage (VOC), short circuit current density (JSC), fill factor (FF), and the overall conversion efficiency (η), were evaluated. Some DES seem to be promising candidates for DSSC applications, since they present higher VOC (up to 140 mV), similar FF values but less current density values, when compared with a reference electrolyte in the same experimental conditions. Additionally, electrochemical impedance spectroscopy (EIS) has been performed to elucidate the charge transfer and transport processes that occur in DSSCs. The values of different resistance (Ω·cm2) phenomena and recombination/relaxation time (s) for each process have been calculated. The best-performance was obtained for DES-based electrolyte, KI:EG (containing 0.5 mol% I2) showing an efficiency of 2.3%. The efficiency of this DES-based electrolyte is comparable to other literature systems, but the device stability is higher (only after seven months the performance of the device drop to 60%).DQ - Departamento de QuímicaLAQV@REQUIMTERUNCruz, HugoPinto, Ana L.Jordão, NoémiNeves, Luísa A.Branco, Luís Alexandre Almeida Fernandes Cobra2022-03-23T23:29:51Z2021-04-062021-04-06T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article15application/pdfhttp://hdl.handle.net/10362/135098engPURE: 42507952https://doi.org/10.3390/suschem2020013info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T05:13:31Zoai:run.unl.pt:10362/135098Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:48:18.328442Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Alkali Iodide Deep Eutectic Solvents as Alternative Electrolytes for Dye Sensitized Solar Cells
title Alkali Iodide Deep Eutectic Solvents as Alternative Electrolytes for Dye Sensitized Solar Cells
spellingShingle Alkali Iodide Deep Eutectic Solvents as Alternative Electrolytes for Dye Sensitized Solar Cells
Cruz, Hugo
Deep eutectic solvents (DES)
Electrolytes
Dye sensitized solar cells (DSSC)
title_short Alkali Iodide Deep Eutectic Solvents as Alternative Electrolytes for Dye Sensitized Solar Cells
title_full Alkali Iodide Deep Eutectic Solvents as Alternative Electrolytes for Dye Sensitized Solar Cells
title_fullStr Alkali Iodide Deep Eutectic Solvents as Alternative Electrolytes for Dye Sensitized Solar Cells
title_full_unstemmed Alkali Iodide Deep Eutectic Solvents as Alternative Electrolytes for Dye Sensitized Solar Cells
title_sort Alkali Iodide Deep Eutectic Solvents as Alternative Electrolytes for Dye Sensitized Solar Cells
author Cruz, Hugo
author_facet Cruz, Hugo
Pinto, Ana L.
Jordão, Noémi
Neves, Luísa A.
Branco, Luís Alexandre Almeida Fernandes Cobra
author_role author
author2 Pinto, Ana L.
Jordão, Noémi
Neves, Luísa A.
Branco, Luís Alexandre Almeida Fernandes Cobra
author2_role author
author
author
author
dc.contributor.none.fl_str_mv DQ - Departamento de Química
LAQV@REQUIMTE
RUN
dc.contributor.author.fl_str_mv Cruz, Hugo
Pinto, Ana L.
Jordão, Noémi
Neves, Luísa A.
Branco, Luís Alexandre Almeida Fernandes Cobra
dc.subject.por.fl_str_mv Deep eutectic solvents (DES)
Electrolytes
Dye sensitized solar cells (DSSC)
topic Deep eutectic solvents (DES)
Electrolytes
Dye sensitized solar cells (DSSC)
description PTDC/QEQ- QFI/1971/2014 POCI- 01-0145-FEDER-016387
publishDate 2021
dc.date.none.fl_str_mv 2021-04-06
2021-04-06T00:00:00Z
2022-03-23T23:29:51Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10362/135098
url http://hdl.handle.net/10362/135098
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv PURE: 42507952
https://doi.org/10.3390/suschem2020013
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 15
application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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