Organic photovoltaic devices comprising fullerenes and derivatives thereof
US8217260B2 · kind B2 · utility
5Cited by
10References
37Claims
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Key dates
| Filing date | May 2, 2007 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | Jan 20, 2030 |
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.