A Tetraphenylethylene Core-Based 3D Structure Small Molecular Acceptor Enabling Efficient Non-Fullerene Organic Solar Cells

作者：Liu, Yuhang; Mu, Cheng; Jiang, Kui; Zhao, Jingbo; Li, Yunke; Zhang, Lu; Li, Zhengke; Lai, Joshua Yuk Lin; Hu, Huawei; Ma, Tingxuan; Hu, Rongrong; Yu, Demei; Huang, Xuhui; Tang, Ben Zhong; Yan, He^*

来源：Advanced Materials, 2015, 27(6): 1015-1020.

DOI：10.1002/adma.201404152

• FIELD-EFFECT TRANSISTORS
• HIGH-PERFORMANCE
• ELECTRON-TRANSPORT
• POLYMER
• PHOTOVOLTAICS
• DIIMIDES
• IMIDES

Bulk heterojunction (BHJ) organic solar cells (OSC) have attracted much research attention due to their promise in low cost conversion of solar energy. A common BHJ OSC consists of an electron donor and an electron acceptor that work together to convert light to electricity. Due to their highly twisted molecular structure, TPE-based molecules exhibit weak intermolecular interactions and thus excellent solubility in organic solvents even when they have no or very minimal alkyl-solubilizing groups. Given these properties, in this study, the TPE core structure is connected to four perylenediimide (PDI) units, which have a very large near-planar structure and are commonly used as the acceptor for non-fullerene OSCs. A key feature of SM acceptors compared with fullerenes is their excellent light absorption properties, which can be used to complement the absorption of the donor polymers.

• 出版日期2015-2-11
• 单位香港科技大学深圳研究院; 西安交通大学