Modification of the electronic properties of the p-spacer of chromophores linked to calix[4]arene platform for DSSCs applications

Colom, E. ; Andrés-Castán, J.M. ; Barrios, D. ; Duerto, I. ; Franco, S. (Universidad de Zaragoza) ; Garín, J. (Universidad de Zaragoza) ; Orduna, J. (Universidad de Zaragoza) ; Villacampa, B. (Universidad de Zaragoza) ; Blesa, M.J. (Universidad de Zaragoza)

Resumen: We have developed two novel dyes based on p-tert-butyl-calix[4]arene in order to evaluate their behavior as sensitizer in photovoltaic devices. These dyes consist in a difunctionalized calix[4]arene with triphenylamine (TPA)-donor, a heteroaromatic π-conjugated spacer, thiophene and benzothiadiazole-phenyl ring, respectively and cyanoacetic acid as acceptor group. The effect of the π-spacer has been studied by UV–vis spectroscopy and Differential Pulse Voltammetry and the models compounds have been theoretically investigated. The dye bearing phenylbenzothiadiazole results in a bathochromic shifted absorption and an adequate efficiency to transfer charge from D to A. The considerable increase of the photocurrent density results in a better efficiency of the devices prepared with these novel dyes with respect to the p-tert-butyl-calix[4]arene derivatives bearing TPA dye. In particular, p-tert-butyl-calix[4]arene derivative based on phenylbenzothiadiazole has reached an efficiency value of 5.84% which means an increase of 33% of the efficiency over those calix[4]arene derivatives with TPA dye.

Idioma: Inglés

DOI: 10.1016/j.dyepig.2018.12.066

Año: 2019

Publicado en: Dyes and Pigments 164 (2019), 43-53
ISSN: 0143-7208

Factor impacto JCR: 4.613 (2019)

Categ. JCR: CHEMISTRY, APPLIED rank: 12 / 70 = 0.171 (2019) - Q1 - T1
Categ. JCR: MATERIALS SCIENCE, TEXTILES rank: 1 / 23 = 0.043 (2019) - Q1 - T1
Categ. JCR: ENGINEERING, CHEMICAL rank: 26 / 142 = 0.183 (2019) - Q1 - T1

Factor impacto SCIMAGO: 0.827 - Chemical Engineering (miscellaneous) (Q1) - Process Chemistry and Technology (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E14-17R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CTQ2014-52331-R

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Química Orgánica (Dpto. Química Orgánica)
Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)