Abstract
Two pairs of indacenodithiophene (IDT) and quinoxaline-based copolymers with meta- or para-hexyl-phenyl side chains on the IDT unit are synthesized. The meta-substituted polymers offer better solubility, higher molecular weight for both fluorinated and non-fluorinated copolymers, and a superior photovoltaic performance with a power conversion efficiency of 7.8%. The side-chain design strategy presented is an efficient way to produce high performance conjugated polymers for organic electronics.
| Original language | English |
|---|---|
| Article number | 1400680 |
| Journal | Advanced Energy Materials |
| Volume | 4 |
| Issue number | 15 |
| DOIs | |
| State | Published - 1 Oct 2014 |
| Externally published | Yes |
Keywords
- conjugated polymers
- energy conversion
- polymer solar cells
- semiconducting materials
- side-chain modulation