Design of Nano-phase Segregation Structures of Electron Donors and Acceptors toward High-Performance Thin-Film Organic Solar Cells

为了实现高性能的薄膜有机太阳能电池，一个关键的问题是开发自组装策略，使电子供体和受体分子形成异质结的空穴和电子传输纳米级域的宽界面。通过目前的工作，我们展示了具有不同半导体性质的一维连接有机纳米结构的第一个例子。沿着这一成就，我们意外地发现，聚合物刷，轴承多个介晶单元在其侧链，可以形成一个聚合物膜具有大面积的垂面有序的聚合物分子。作为这一发现的延伸，我们展示了一种新的光机械材料，能够将光能转化为机械输出。

For the realization of high-performance thin-film organic solar cells, a key issue is to develop self-assembly strategies that enable electron donor and acceptor molecules to form a heterojunction with a wide interface of hole and electron transporting nanoscale domains. Through the present work, we showed the first example of one-dimensionally connected organic nanostructures with dissimilar semiconducting properties. Along with this achievement, we serendipitously discovered that a polymer brush, bearing multiple mesogenic units in its side chains, can form a polymer film featuring a large-area homeotropic ordering of the polymer molecules. As an extension of this finding, we demonstrated a new photomechanical material, capable of converting light energy into a mechanical output.