Organic photovoltaic devices comprising fullerenes and derivatives thereof
US8894887B2 · kind B2 · utility
2Cited by
11References
15Claims
0Family size
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Key dates
| Filing date | Apr 10, 2013 |
| Grant date | Nov 25, 2014 |
| Priority date | — |
| Expiry date | Apr 10, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/948
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
Photovoltaic cells comprising an active layer comprising, as p-type material, conjugated polymers such as polythiophene and regioregular polythiophene, and as n-type material at least one fullerene derivative. The fullerene derivative can be C60, C70, or C84. The fullerene also can be functionalized with indene groups. Improved efficiency can be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.