Abstract
The effects of processing additive on fullerene aggregation in polymer BHJ solar cells were investigated using new fullerene derivatives bearing a thiophene moiety and alkyl groups. Although new fullerene derivatives showed quite similar electronic transport properties in field-effect transistors, the photovoltaic performances were significantly limited by their aggregative nature. Processing with 1% CN additive, however, changed the aggregated morphology of BHJ films to a smoother and homogeneous morphology, improving photovoltaic performance. The result indicates that processing additive not only influences on polymer side, but also significantly affects fullerene acceptor component.
| Original language | English |
|---|---|
| Pages (from-to) | 570-578 |
| Number of pages | 9 |
| Journal | Organic Electronics |
| Volume | 13 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 2012 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- Field-effect transistors
- Fullerene derivatives
- Nano-scale morphology
- Polymer solar cells
- Processing additives
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