Utilize este identificador para referenciar este registo: https://hdl.handle.net/1822/49650

TítuloBenzothiadiazole derivatives functionalized with two different (hetero)aromatic donor groups: synthesis and evaluation as TiO2 sensitizers for DSSCs
Autor(es)Fernandes, Sara Sofia Marques
Pereira, Ana
Ivanou, Dzmitry
Mendes, Adélio
Raposo, M. Manuela M.
Palavras-chaveSynthesis
Heterocycles
5-Hexyl-2,2’-bithienyl electron donor group
Benzothiadiazole
Auxiliary donor or acceptor heterocycles
Cyanoacetic acid anchoring group
Co-adsorption
Dye-sensitized solar cells (DSSCs)
Thiophene
UV-visible spectroscopy
Fluorescence
Push-pull pi-conjugated systems
Dye-sensitized solar cells
Data2018
EditoraElsevier
RevistaDyes and Pigments
CitaçãoFernandes, S. S. M.; Pereira, A.; Ivanou, D.; Mendes, A.; Raposo, M. M. M. Benzothiadiazole derivatives functionalized with two different (hetero)aromatic donor groups: synthesis and evaluation as TiO2 sensitizers for DSSCs Dyes Pigments 2018, 151, 89-94
Resumo(s)A series of benzothiadiazole-based push-pull heterocyclic systems were synthesized and characterized in order to study the variations induced by different aromatic and heterocyclic donor groups in the optical, electronic and photovoltaic properties of DSSCs prepared with the respective cyanoacetic acid derivatives. The organic sensitizers bear a 5-hexyl-2,2’-bithienyl or N,N-diphenylanilino donor moieties conjugated with a thienyl-benzothiadiazole spacer functionalized with the electron acceptor/anchoring cyanoacetic acid group. The solar cell based on TiO2 sensitized with the novel dye bearing the 5-hexyl-2,2’-bithienyl donor, exhibited a power conversion efficiency of 0.95 % due the inefficient electron injection. Co-adsorption studies of the same dye resulted in enhanced photovoltaic conversion efficiency of 2.49 %, which represents an improvement of cell efficiency of 260 %. The sensitizer bearing the N,N-diphenylanilino donor exhibited 4.51 % power conversion efficiency, that was further enhanced by co-sensitization to 5.22 % efficiency.
TipoArtigo
URIhttps://hdl.handle.net/1822/49650
DOI10.1016/j.dyepig.2017.10.038
ISSN0143-7208
e-ISSN1873-3743
Versão da editorahttps://doi.org/10.1016/j.dyepig.2017.10.038
Arbitragem científicayes
AcessoAcesso aberto
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