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https://hdl.handle.net/10216/103197
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DC Field | Value | Language |
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dc.creator | Sara S. M. Fernandes | |
dc.creator | M. Cidália R. Castro | |
dc.creator | I. Mesquita | |
dc.creator | L. Andrade | |
dc.creator | A. Mendes | |
dc.creator | M. Manuela M. Raposo | |
dc.date.accessioned | 2019-08-12T23:08:28Z | - |
dc.date.available | 2019-08-12T23:08:28Z | - |
dc.date.issued | 2017 | |
dc.identifier.issn | 0143-7208 | |
dc.identifier.other | sigarra:175205 | |
dc.identifier.uri | https://hdl.handle.net/10216/103197 | - |
dc.description.abstract | Four novel heterocycle dyes 3a-d were synthesized in order to study the variations produced in theoptical, electronic and photovoltaic properties by substitution of different electron-rich heterocyclicgroups 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 ona thieno[3,2-b]thiophene spacer, a cyanoacetic acid anchoring group and several electron-richheterocycles (thiophene, pyrrole and furan) as donor groups. The multidisciplinary study concerningthe optical, redox and photovoltaic characterization of the dyes reveals that compound 3b bearing ahexyl-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 betweenN719 and 3b revealed that upon addition of N719 co-adsorbent, the optimized cell efficiencies wereimproved by 16e77%. The best efficiency was 4.40%, corresponding to 54% of the photovoltaic performance of the N719-based DSSC fabricated and measured under similar conditions | |
dc.language.iso | eng | |
dc.relation | info:eu-repo/grantAgreement/COMISSÃO EUROPEIA/7.º Programa-Quadro de IDT/321315/Building Integrated Dye Sensitized Solar Cells/BI-DSC | |
dc.rights | restrictedAccess | |
dc.subject | Química orgânica, Química | |
dc.subject | Organiz chemistry, Chemical sciences | |
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 | |
dc.type | Artigo em Revista Científica Internacional | |
dc.contributor.uporto | Faculdade de Engenharia | |
dc.identifier.doi | 10.1016/j.dyepig.2016.08.020 | |
dc.subject.fos | Ciências exactas e naturais::Química | |
dc.subject.fos | Natural sciences::Chemical sciences | |
Appears in Collections: | FEUP - Artigo em Revista Científica Internacional |
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File | Description | Size | Format | |
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175205.pdf Restricted Access | Artigo original publicado | 759.76 kB | Adobe PDF | Request a copy from the Author(s) |
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