Abstract
Poly(isoindigo-alt-3,4-difluorothiophene) (PIID[2F]T) analogues used as “polymer acceptors” in bulk-heterojunction (BHJ) solar cells achieve >7 % efficiency when used in conjunction with the polymer donor PBFTAZ (model system; copolymer of benzo[1,2-b:4,5-b′]dithiophene and 5,6-difluorobenzotriazole). Considering that most efficient polymer-acceptor alternatives to fullerenes (e.g. PC61BM or its C71 derivative) are based on perylenediimide or naphthalenediimide motifs thus far, branched alkyl-substituted PIID[2F]T polymers are particularly promising non-fullerene candidates for “all-polymer” BHJ solar cells.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 531-535 |
| Number of pages | 5 |
| Journal | Angewandte Chemie - International Edition |
| Volume | 57 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jan 8 2018 |
| Externally published | Yes |
Keywords
- 3,4-difluorothiophene
- all-polymer solar cells
- isoindigo
- polymer acceptors
- solar cells
ASJC Scopus subject areas
- Catalysis
- General Chemistry