Improved Efficiency in Organic Solar Cells Based on A2-D-A1-D-A2 Nonfullerene Acceptors with a Benzoselenadiazole Core Induced by Higher Dipole Moment and Dielectric Constant

Two A2-D-A1-D-A2 nonfused small molecules (NC1 and NC2) have been synthesized. The compounds contain benzoselenadiazole as a core acceptor (A1), cyclopentadithiophene as a donor (D), and rhodanine and CN-rhodanine as terminal acceptors (A2), and their optical and electrochemical properties have been...

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Detalhes bibliográficos
Autores: Casanova González, Noelia, Shankar S, Shyam, Gómez-Escalonilla Romojaro, María José, Cruz Manrique, María Pilar de la, Singhal, Rahul, D. Sharma, Ganesh, Langa de la Puente, Fernando
Formato: artículo
Fecha de publicación:2023
País:España
Recursos:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/36861
Acesso em linha:https://hdl.handle.net/10578/36861
Access Level:acceso abierto
Palavra-chave:Organic solar cells
Nonfullerene acceptors
Benzoselenadiazole
Dipole moment
Dielectric constant
Energy transfer
Charge recombination
Descrição
Resumo:Two A2-D-A1-D-A2 nonfused small molecules (NC1 and NC2) have been synthesized. The compounds contain benzoselenadiazole as a core acceptor (A1), cyclopentadithiophene as a donor (D), and rhodanine and CN-rhodanine as terminal acceptors (A2), and their optical and electrochemical properties have been investigated. The dielectric constant and dipole moment of NC2 are higher than that of NC1, and this leads to a lower binding energy for the excitons generated after the absorption of photons.

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