Projects per year
Abstract
The influence of crystallinity on exciton diffusion and fullerene distribution
was investigated by blending amorphous and semicrystalline copolymers. We measured exciton diffusion and fluorescence quenching in such blends by dispersing fullerene molecules into them. We find that the diffusion length is more than two times higher in the semicrystalline copolymer than in the amorphous copolymer. We also find that fullerene preferentially mixes into disordered regions of the polymer film. This shows that relatively small differences in molecular structure are important for exciton diffusion and fullerene distribution.
was investigated by blending amorphous and semicrystalline copolymers. We measured exciton diffusion and fluorescence quenching in such blends by dispersing fullerene molecules into them. We find that the diffusion length is more than two times higher in the semicrystalline copolymer than in the amorphous copolymer. We also find that fullerene preferentially mixes into disordered regions of the polymer film. This shows that relatively small differences in molecular structure are important for exciton diffusion and fullerene distribution.
Original language | English |
---|---|
Pages (from-to) | 3054-3060 |
Journal | Journal of Physical Chemistry Letters |
Volume | 6 |
Issue number | 15 |
Early online date | 9 Jul 2015 |
DOIs | |
Publication status | Published - 6 Aug 2015 |
Keywords
- Exciton diffusion length
- Organic solar cells
- Bulk heterojunction (BHJ)
- Conjugated polymer
- Crystallinity
Fingerprint
Dive into the research topics of 'Controlling exciton diffusion and fullerene distribution in photovoltaic blends by side chain modification'. Together they form a unique fingerprint.Projects
- 3 Finished
-
CM DTC 2014 - 2022: EPSRC centre for doctoral training in condensed matter physics: Renewal of the CM-DTC
King, P. (PI)
1/08/14 → 31/01/24
Project: Standard
-
ERC Advanced Grant EXCITON: EU FP7 ERC Advanced Grant 2012 EXCITON
Samuel, I. D. W. (PI)
1/04/13 → 30/03/19
Project: Standard
-
The Influence of Excited State Physics: The influence of Excited State Physics in Conjugated Polymer Devices
Samuel, I. D. W. (PI)
1/10/12 → 30/09/15
Project: Standard