Elucidating double aggregation mechanisms in the morphology optimization of diketopyrrolopyrrole-based narrow bandgap polymer solar cells

Elucidating double aggregation mechanisms in the morphology optimization of diketopyrrolopyrrole-based narrow bandgap polymer solar cells

© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 26(2014), 19 vom: 21. Mai, Seite 3142-7
1. Verfasser: Gao, Jing (VerfasserIn)
Weitere Verfasser: Chen, Wei, Dou, Letian, Chen, Chun-Chao, Chang, Wei-Hsuan, Liu, Yongsheng, Li, Gang, Yang, Yang
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2014
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article Research Support, U.S. Gov't, Non-P.H.S. polymer aggregation polymer crystallization polymer solar cells solution-stage morphology solvent mixtures
Beschreibung
Zusammenfassung:© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
The power conversion efficiency (PCE) of a DPP-based polymer solar cell is significantly improved by using DIO or DCB as processing additives. The discovery that DCB outperforms DIO with a significantly wider solvent mixture operation window suggests different optimization mechanisms. Although both solvent mixture systems involve double aggregation processes, including a similar solution-to-film aggregation, however, two distinct solution-stage aggregations are observed: relatively amorphous polymer aggregates form in the CF-DIO solution, while more crystalline polymer aggregates form in CF-DCB solution
Beschreibung:Date Completed 20.04.2015
Date Revised 30.09.2020
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.201305645