Truxene-Centered Electron Acceptors for Non-Fullerene Solar Cells: Alkyl Chain and Branched Arm Engineering

A series of symmetrical truxene-centered and 3-ethylrhodanine end-capped electron acceptors with high absorption coefficient, namely Tr(Hex)(6)-3RD, Tr(Dec)(6)-3RD, and Tr(Hex)(6)-6RD, were prepared and constructed for non-fullerene solar cells. To satisfy solution-processability, multiple energy le...

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Detalles Bibliográficos
Autores principales: Lin, Kaiwen, Du, Wenhao, Shen, Shuqi, Liang, Haoshen, Zhang, Xiaobin, Xiao, Manjun, Wang, Yuehui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9499097/
https://www.ncbi.nlm.nih.gov/pubmed/36142313
http://dx.doi.org/10.3390/ijms231810402
Descripción
Sumario:A series of symmetrical truxene-centered and 3-ethylrhodanine end-capped electron acceptors with high absorption coefficient, namely Tr(Hex)(6)-3RD, Tr(Dec)(6)-3RD, and Tr(Hex)(6)-6RD, were prepared and constructed for non-fullerene solar cells. To satisfy solution-processability, multiple energy levels, and suitable morphology, these three acceptors were comparatively studied through alkyl chain (hexyl/decyl) and branched-arm engineering (three/six branched arms). The six-bladed propeller acceptor of Tr(Hex)(6)-6RD recorded the power conversion efficiency (PCE) of 1.1% blending with PTB7-Th without additional additives and post-processing. This work highly broadens the potential applications of star-shaped truxene building blocks in the fields of organic electronics.

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