Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/44490
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Campo DC | Valor | Idioma |
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dc.contributor.author | Fernandes, Sara Sofia Marques | por |
dc.contributor.author | Castro, Maria Cidália Rodrigues | por |
dc.contributor.author | Mesquita, I. | por |
dc.contributor.author | Andrade, L. | por |
dc.contributor.author | Mendes, A. | por |
dc.contributor.author | Raposo, M. Manuela M. | por |
dc.date.accessioned | 2017-01-26T15:37:51Z | - |
dc.date.issued | 2017-01 | - |
dc.date.submitted | 2016-05 | - |
dc.identifier.citation | Fernandes, S. S. M.; Castro, M. C. R.; Mesquita, I.; Andrade, L.; Mendes, A.; Raposo, M. M. M. Synthesis and characterization of novel thieno[3,2 b]thiophene based metal-free organic dyes with different heteroaromatic donor moieties as sensitizers for dye-sensitized solar cells. Dyes Pigments 2017, 136, 46-53. | por |
dc.identifier.issn | 0143-7208 | por |
dc.identifier.uri | https://hdl.handle.net/1822/44490 | - |
dc.description.abstract | Four novel heterocycle dyes 3a-d were synthesized in order to study the variations produced in the optical, electronic and photovoltaic properties by substitution of different electron-rich heterocyclic groups to the thieno[3,2-b]thiophene system. The final push-pull conjugated dyes 3a-d were synthesized by Suzuki-Miyaura coupling reaction followed by Knoevenagel condensation of the corresponding aldehyde precursors with cyanoacrylic acid 2a-d. These new push-pull systems are based on a thieno[3,2-b]thiophene spacer, a cyanoacetic acid anchoring group and several electron-rich heterocycles (thiophene, pyrrole and furan) as donor groups. The multidisciplinary study concerning the optical, redox and photovoltaic characterization of the dyes reveals that compound 3b bearing a hexyl-bithiophene donor group/heterocyclic spacer exhibits the best overall conversion efficiency (2.49%) as sensitizer in nanocrystalline TiO2 dye sensitized solar cells. Co-adsorption studies between N719 and 3b revealed that upon addition of N719 co-adsorbent, the optimized cell efficiencies were improved by 16–77%. The best efficiency was 4.40%, corresponding to 54% of the photovoltaic performance of the N719-based DSSC fabricated and measured under similar conditions. | por |
dc.description.sponsorship | FCT | por |
dc.description.sponsorship | FEDER | por |
dc.description.sponsorship | QREN | por |
dc.description.sponsorship | European Research Council (Contract no: 321315) | por |
dc.language.iso | eng | por |
dc.publisher | Elsevier 1 | por |
dc.relation | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F87786%2F2012/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F78037%2F2011/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/COMPETE/132953/PT | por |
dc.rights | openAccess | - |
dc.subject | Dye sensitized solar cells (DSSCs) | por |
dc.subject | Heterocyclic organic dye | por |
dc.subject | Metal-free thieno[3,2-b]thiophene dye | por |
dc.subject | Cyanoacetic acid anchoring group | por |
dc.subject | Heterocyclic donor groups | por |
dc.subject | Co-adsorption | por |
dc.subject | Synthesis | por |
dc.subject | UV-Vis. | por |
dc.subject | Fluorescence | por |
dc.subject | Push-pull systems | por |
dc.subject | Dye sensitized solar cells | por |
dc.subject | Metal-free thieno[3,2-b]thlophene dye | por |
dc.title | Synthesis and characterization of novel thieno[3,2-b]thiophene based metal-free organic dyes with different heteroaromatic donor moieties as sensitizers for dye-sensitized solar cells | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | http://www.sciencedirect.com/science/article/pii/S014372081630417X | por |
sdum.publicationstatus | info:eu-repo/semantics/publishedVersion | por |
oaire.citationStartPage | 46 | por |
oaire.citationEndPage | 53 | por |
oaire.citationTitle | Dyes and Pigments | por |
oaire.citationVolume | 136 | por |
dc.identifier.eissn | 1873-3743 | - |
dc.identifier.doi | 10.1016/j.dyepig.2016.08.020 | por |
dc.subject.fos | Ciências Naturais::Outras Ciências Naturais | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Dyes and Pigments | por |
Aparece nas coleções: | CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Dyes and Pigments 2017, 136, 46-53.pdf | 664,18 kB | Adobe PDF | Ver/Abrir |