题目：

Dual Structure Modifications to Realize Efficient Polymer Solar Cells with Low Fullerene Content

作者：

Jianyu Yuan¹, Kunyuan Lu¹, Michael Ford², Guillermo C. Bazan², and Wanli Ma¹*

单位：

¹Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University

²Center of Polymers and Organic Solids, Departments of Chemistry & Biochemistry, University of California, Santa Barbara

摘要：

The molecular structures of both donor polymer and acceptor fullerene were adjusted and their effect on the donor/acceptor blend ratio in the polymer solar cells was investigated. We found that increasing the side-chain rigidity of the donor polymer or bulkiness of the fullerene can both effectively reduce the fullerene intercalation into polymer side chains, realizing efficient electron transport at higher polymer/fullerene ratio. Especially, by using a bulkier fullerene molecule, all the three adopted polymers exhibit remarkably stable device performance over a wide range of blend ratio (from 1:0.5 to 1:1.0), which can't be achieved by using conventional PC61BM. Moreover, using bulky PC61BAd together with a high sidechain density polymer PTP8, the optimal device performance could be obtained at a surprisingly low blend ratio of 1:0.6, which may lead to more thermally stable and cost-effective devices.

影响因子：

3.827

分区情况：

2区

链接：

 http://www.sciencedirect.com/science/article/pii/S1566119916300702