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Issue 10, 2012
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Functional fullerenes for organic photovoltaics

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Tremendous progress has been made on the design and processing of new active and interfacial materials to enable organic photovoltaics to achieve high power conversion efficiencies of >10%. In this Feature Article the development of functional fullerenes as (1) acceptors, (2) electron selective layers, and (3) morphology stabilizers for bulk heterojunction polymer solar cells is reviewed. In addition to the standard PCBM based acceptors, a wide variety of newly developed fullerene-derived molecules have appeared in the past few years and started to show very encouraging photovoltaic performance when they were blended with low bandgap conjugated polymers. New fullerene derivatives with proper molecular design can also serve as electron selective interfacial materials and morphology stabilizers for the bulk heterojunction layer, which are essential to improve the interfacial property and long term stability of polymer solar cells. Although there still are many challenges ahead before practical polymer solar cells will arrive in the market place, the research in functional fullerenes deserves to have more attention in order to expedite this development process.

Graphical abstract: Functional fullerenes for organic photovoltaics

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Publication details

The article was received on 11 Oct 2011, accepted on 19 Dec 2011 and first published on 20 Jan 2012

Article type: Feature Article
DOI: 10.1039/C2JM15126J
Citation: J. Mater. Chem., 2012,22, 4161-4177
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    Functional fullerenes for organic photovoltaics

    C. Li, H. Yip and A. K.-Y. Jen, J. Mater. Chem., 2012, 22, 4161
    DOI: 10.1039/C2JM15126J

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