Enhancing the temporal stability of DSSCs with novel vinylpyrimidine anchoring and accepting group

Duerto, I. ; Sarasa, S. ; Barrios, D. (Universidad de Zaragoza) ; Orduna, J. ; Villacampa, B. (Universidad de Zaragoza) ; Blesa, M. -J (Universidad de Zaragoza)

Resumen: Three compounds based on aniline, thiophene and vinylpyrimidine as anchoring group have been prepared and studied as light harvesting units for dye-sensitized solar cells (DSSCs). They comprise thiophenyl p-spacer systems with one or two thiophenes (AT-Pyri, ATT-Pyri) and aniline as donor which is functionalized, in one case, with an hydroxyl group (HO-AT-Pyri). The bithiophene based dye (ATT-Pyri) shows higher extinction coefficients and smaller transition energy, as well as broader absorption spectrum. Thus, despite lower dye uptake, devices based on one thiophene and with the hydroxyl group (HO-AT-Pyri) have slightly higher power conversion efficiencies (¿) as compared with the analogous dye without this group (AT-Pyri). However, the best performing device is based on the dye with bithiophene bridge (ATT-Pyri) when a co-adsorbent is added to avoid the aggregation of the dye. The photovoltaic parameters of cells based on these vinylpyrimidine dyes are enhanced over 1000 h, especially for ATT-Pyri devices, which reach a ¿ = 6, 4%. © 2022 The Authors

Idioma: Inglés

DOI: 10.1016/j.dyepig.2022.110310

Año: 2022

Publicado en: Dyes and Pigments 203, 110310 (2022), -
ISSN: 0143-7208

Factor impacto JCR: 4.5 (2022)

Categ. JCR: CHEMISTRY, APPLIED rank: 18 / 72 = 0.25 (2022) - Q1 - T1
Categ. JCR: MATERIALS SCIENCE, TEXTILES rank: 3 / 25 = 0.12 (2022) - Q1 - T1
Categ. JCR: ENGINEERING, CHEMICAL rank: 40 / 141 = 0.284 (2022) - Q2 - T1

Factor impacto CITESCORE: 8.3 - Chemical Engineering (Q1)

Factor impacto SCIMAGO: 0.683 - Chemical Engineering (miscellaneous) (Q1) - Process Chemistry and Technology (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E47-20R
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2019-104307GB-I00-AEI-10.13039-501100011033

Tipo y forma: Article (Published version)

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