Conditions for efficient exciton dissociation in non-fullerene organic solar cells

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorUniversidade Federal do Paraná - UFPR-
Autor(es): dc.creatorUniversidade Federal do Rio de Janeiro - UFRJ-
Autor(es): dc.creatorUniversidade Federal do Paraná - UFPR-
Autor(es): dc.creatorLeandro Benatto-
Autor(es): dc.creatorGraziâni Candiotto-
Autor(es): dc.creatorKARLISSON RODRIGO DE ALMEIDA SOUSA-
Autor(es): dc.creatorJoão Paulo Araújo Souza-
Autor(es): dc.creatorLUCIMARA STOLZ ROMAN-
Autor(es): dc.creatorMarlus Koehler-
Data de aceite: dc.date.accessioned2025-09-01T11:06:05Z-
Data de disponibilização: dc.date.available2025-09-01T11:06:05Z-
Data de envio: dc.date.issued2024-11-12-
Data de envio: dc.date.issued2024-11-12-
Data de envio: dc.date.issued2021-11-30-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/1884/92600-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/1884/92600-
Descrição: dc.descriptionThe minimum driving force strategy is usually applied to promote the exciton dissociation in organic solar cells (OSCs) without significant loss of open-circuit voltage. Despite the advances on this topic, the correlation between driving force and efficient free charge generation remains unclear. To answer this question, we employ a kinetic approach to study the charge separation in ten different donor/acceptor (D/A) blends [4] using non-fullerene acceptors. The model takes into account disorder effects in the driving forces (ΔG) and electronic coupling (β) to obtain the transitions rates (k) from the Marcus/Hush theory. We demonstrate that our model successfully predicts the measured photoluminescence quenching efficiency for acceptor excitation in those blends (Fig. 4). In addition, we show that a relationship derived from our approach (Eb,CT < ΔGHT) can successfully predict the quenching efficiency. The model also revealed the fundamental role played by the exciton lifetime to enhance the charge generation process. Our results demonstrate a comprehensive picture of the exciton dissociation at the heterojunction. In addition, our observations suggest guidelines for a rational material design aiming the optimization of OSCs.-
Formato: dc.formatapplication/pdf-
Relação: dc.relationSEE-U: Sustainable Development Goals, a global scientific conference at UFPR-
Palavras-chave: dc.subjectorganic solar cells-
Palavras-chave: dc.subjectnon-fullerene acceptors-
Palavras-chave: dc.subjectDFT-
Palavras-chave: dc.subjectPL quenching-
Título: dc.titleConditions for efficient exciton dissociation in non-fullerene organic solar cells-
Tipo de arquivo: dc.typelivro digital-
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