Design of Bicontinuous Donor/Acceptor Morphologies for Use as Organic Solar Cell Active Layers

作者：Kipp Dylan; Verduzco Rafael; Ganesan Venkat^*

来源：Journal of Polymer Science Part B: Polymer Physics , 2016, 54(9): 884-895.

DOI：10.1002/polb.23988

• bicontinuous microemulsion
• block copolymer compatibilizer
• block copolymers
• bulk heterojunction morphology
• conjugated polymers
• fullerenes
• morphology
• organic solar cell
• polymer/solvent blend
• phase behavior

In recent works, we demonstrated the achievement of bicontinuous donor/acceptor morphologies by the addition of conjugated block copolymers to a blend of conjugated homopolymer donors and fullerene acceptors. However, the domain sizes resulting in experiments were much larger than those of interest for high-performance organic solar cells. Moreover, a significant concentration of fullerene acceptors was present in the donor domains. Here, we utilize simulations to study the bicontinuous donor/acceptor morphologies that result for different parametric conditions. Using such results, we provide guidelines for how to blend polymer materials to give rise to bicontinuous phases with the smaller and more compositionally pure domains that are desirable for organic photovoltaic applications. Our results can be generalized to treat a large range of donor and acceptor monomers.

• 出版日期2016-5-1