Abstract
We synthesized isoindigo-based two donor-acceptor (D-A) copolymers to optimize the morphology in ternary blend films with two p-type polymers and n-type phenyl-C61-butyric acid methyl ester (PC61BM). Compared to binary systems with a single copolymer and PC61BM, the ternary polymer solar cell with two copolymers and PC61BM showed highly enhanced power conversion efficiency of 5.13% with a high short circuit current of 13.23 mA cm−2. These results were supported by atomic force microscopy (AFM) and transmission electron microscopy (TEM) observations of the surface and internal morphology of the thin film, respectively.
Original language | English |
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Pages (from-to) | 362-368 |
Number of pages | 7 |
Journal | Synthetic Metals |
Volume | 220 |
DOIs | |
Publication status | Published - 2016 Oct 1 |
Bibliographical note
Funding Information:This research was supported by National Research Foundation of Korea ( NRF2012R1A2A1A01008797 ) and by Key Research Institute Program ( NRF20100020209 ). We are grateful to Korea Basic Science Institute (KBSI) for allowing the use of their HRTEM instrument.
Publisher Copyright:
© 2016 Elsevier B.V.
Keywords
- Copolymer
- Isoindigo
- Morphology
- Polymer blend
- Polymer solar cell
- Power conversion efficiency
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry