Efficient All-Polymer Solar Cells with Sequentially Processed Active Layers

In this work, we apply the sequential processing (SqP) method to address the relatively low electron mobility in recent all-polymer solar cells (all-PSCs) based on the polymerized small-molecule acceptor (PSMA). Compared to the blend-casting (BC) method, all-PSCs composed of PM6/PY-IT via the SqP me...

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Detalles Bibliográficos
Autores principales: Zhao, Chaoyue, Huang, Hui, Wang, Lihong, Zhang, Guoping, Lu, Guanyu, Yu, Han, Lu, Guanghao, Han, Yulai, Qiu, Mingxia, Li, Shunpu, Zhang, Guangye
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9144747/
https://www.ncbi.nlm.nih.gov/pubmed/35631941
http://dx.doi.org/10.3390/polym14102058
Descripción
Sumario:In this work, we apply the sequential processing (SqP) method to address the relatively low electron mobility in recent all-polymer solar cells (all-PSCs) based on the polymerized small-molecule acceptor (PSMA). Compared to the blend-casting (BC) method, all-PSCs composed of PM6/PY-IT via the SqP method show boosted electron mobility and a more balanced charge carrier transport, which increases the FF of the SqP device and compensates for the short-circuit current loss, rendering comparable overall performance with the BC device. Through film-depth-dependent light absorption spectroscopy, we analyze the sub-layer absorption and exciton generation rate in the vertical direction of the device, and discuss the effect of the increased electron mobility on device performance, accordingly.

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