Abstract
Organic photovoltaics: Following the direct photoexcitation of the low-energy optical gap PDI component in the F8BT:PDI photovoltaic blend film (step 1), charge generation takes place (steps 2, 3). Non-geminate charge recombination (step 4) results in the generation of delayed luminescence (DL) in the μs time scale (step 5). The DL spectrum originates from an equilibrated charge-transfer (CT) state formed between the components of the composite. The F8BT-PDI CT complex has a ground state character (step 6).
Original language | English (US) |
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Pages (from-to) | 5183-5187 |
Number of pages | 5 |
Journal | Advanced Materials |
Volume | 22 |
Issue number | 45 |
DOIs | |
State | Published - Dec 1 2010 |
Externally published | Yes |
Keywords
- bulk heterojunction
- charge transfer
- delayed luminescence
- microstructure
- non-geminate charge recombination
- solar cells
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- General Materials Science