4H-pyranylidene-based small push-pull chromophores: Synthesis, structure, electronic properties and photovoltaic evaluation

Tejeda-Orusco, V. ; Blais, M. ; Cabanetos, C. ; Blanchard, P. ; Andreu, R. (Universidad de Zaragoza) ; Franco, S. (Universidad de Zaragoza) ; Orduna, J. (Universidad de Zaragoza) ; Diosdado, B.E.

Resumen: The synthesis and electrochemical and optical characterizations of four new 4H-pyranylidene-based push-pull molecules are reported herein as well as their evaluation as donor materials for organic photovoltaics. Studied systems exhibit good absorption properties and appropriate LUMO levels for a photoinduced electron transfer to C60. Bilayer organic solar cells fabricated from these new donors and C60 as the acceptor gave photocurrent however with low power conversion efficiencies. As shown by X-ray diffraction and theoretical calculations, titled molecules present a twisted structure which may prevent the formation of suitable p-p contacts between adjacent molecules hence explaining their low photovoltaic performance.

Idioma: Inglés

DOI: 10.1016/j.dyepig.2020.108357

Año: 2020

Publicado en: Dyes and Pigments 178 (2020), 108357 1-9
ISSN: 0143-7208

Factor impacto JCR: 4.889 (2020)

Categ. JCR: CHEMISTRY, APPLIED rank: 16 / 74 = 0.216 (2020) - Q1 - T1
Categ. JCR: MATERIALS SCIENCE, TEXTILES rank: 3 / 25 = 0.12 (2020) - Q1 - T1
Categ. JCR: ENGINEERING, CHEMICAL rank: 33 / 143 = 0.231 (2020) - Q1 - T1

Factor impacto SCIMAGO: 0.826 - Process Chemistry and Technology (Q1) - Chemical Engineering (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E14-17R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CTQ2014-52331-R
Financiación: info:eu-repo/grantAgreement/ES/UZ/UZ2019-CIE-01

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Química Orgánica (Dpto. Química Orgánica)