有机太阳电池三维阴极界面修饰材料的设计合成和掺杂机理研究

在有机太阳能电池研究领域，界面修饰材料的研发和界面工程机理的探索是提高器件光伏性能的重要因素。本项目提出“有机太阳电池n-型三维阴极界面修饰材料”的思路和构想。通过在阴极界面修饰材料中引入不同空间结构的三维缺电子骨架和不同性能的极性官能团侧链，有效调控该类三维结构材料的吸收光谱、分子能级、电子迁移率和界面修饰性能，获得新型有机太阳电池n-型三维阴极界面修饰材料。通过深入研究该类材料分子内的自掺杂效应和与受体的分子间掺杂机理，考察三维分子结构-掺杂机理-器件性能之间的相互影响关系，为n-型三维阴极界面修饰材料的设计合成和高效有机太阳能电池的制备提供理论基础和实验依据。

Research and development of interfacial modification materials and exploration of interface engineering mechanism are important factors to improve the performance of organic solar cells. This project focuses on design and synthesize a series of n-type three-dimensional cathode interface modification material for organic solar cells. Different spatial structure of three-dimensional electron-deficient skeleton and the polar functional group side chain were introduced to obtain the novel n-type three-dimensional cathode interfacial materials. The interface modification, absorption spectra, energy level, electron mobility and interface modification performance can be controlled effectively. Through in-depth study the mechanism of intramolecular andintermolecular doping effect between the cathode interlayer and the acceptor, to investigate the interaction effect relationship of the molecular structure, doping mechanism and the devices performance. This project is in accord with the new direction of energy development and environmental protection in the international society.