Abstract
It is well known that even small variations in the solid-state microstructure of polymer:fullerene bulk heterojunctions can drastically change their organic solar cell device performance. We employ pBTTT:PC61BM as a model system and manipulate co-crystal formation of 1:nsp;::nsp;1 (by weight) blends with the assistance of fatty acid methyl esters as additives. This allows us to evaluate the role of the intermixed phase in such binary blends through manipulation of their phase morphology - from fully intercalated to partially and predominantly non-intercalated systems - and its effect on the exciton- and carrier- dynamics and the efficiency of charge collection, with relevance for future device design and manufacturing.
Original language | English (US) |
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Pages (from-to) | 270-279 |
Number of pages | 10 |
Journal | Materials Horizons |
Volume | 1 |
Issue number | 2 |
DOIs | |
State | Published - Mar 2014 |
Bibliographical note
Publisher Copyright:© The Royal Society of Chemistry 2015.
ASJC Scopus subject areas
- General Materials Science
- Mechanics of Materials
- Process Chemistry and Technology
- Electrical and Electronic Engineering