Abstract
Following an approach developed in our group to incorporate tetrathiafulvalene (TTF) units into conjugated polymeric systems, we have studied a low band gap polymer incorporating TTF as a donor component. This polymer is based on a fused thieno-TTF unit that enables the direct incorporation of the TTF unit into the polymer, and a second comonomer based on the diketopyrrolopyrrole (DPP) molecule. These units represent a donor-acceptor copolymer system, p(DPP-TTF), showing strong absorption in the UV-visible region of the spectrum. An optimized p(DPP-TTF) polymer organic field effect transistor and a single material organic solar cell device showed excellent performance with a hole mobility of up to 5.3 × 10-2 cm2/(V s) and a power conversion efficiency (PCE) of 0.3%, respectively. Bulk heterojunction organic photovoltaic devices of p(DPP-TTF) blended with phenyl-C71-butyric acid methyl ester (PC71BM) exhibited a PCE of 1.8%.
Original language | English (US) |
---|---|
Pages (from-to) | 27999-28005 |
Number of pages | 7 |
Journal | ACS Applied Materials and Interfaces |
Volume | 7 |
Issue number | 51 |
DOIs | |
State | Published - Dec 30 2015 |
Externally published | Yes |
Keywords
- DPP-TTF polymer
- OFET
- OPV
- hole mobility
- single material OPV
ASJC Scopus subject areas
- General Materials Science