面向大尺寸低成本柔性的印刷聚合物太阳电池：阴极界面的优化研究

柔性印刷聚合物太阳电池是一种成本低、质轻、适用性广的新一代光伏能源器件，是解决环境恶化和未来不可再生能源储量枯竭等问题的有效办法。随着卷对卷印刷工艺制备的有机电池组件的实现，专注于大尺寸低成本柔性器件的材料和器件优化的研究开启。但是，目前大面积器件的制备开发面临诸多挑战，解决问题的关键之一在于应用高效稳定的阴极界面层。本研究将在大面积印刷器件上应用种类众多，溶液加工性能突出和功能优异的有机阴极界面材料，用以实现器件中电子的高效传输和抽取，并系统研究不同阴极界面的水氧稳定性，优化有机阴极界面的打印薄膜质量。旨在筛选和开发高效稳定的有机阴极界面材料，揭示有机阴极界面层性能衰减机理和界面材料打印工艺优化途径。实现阴极界面有效优化，为开发新型的面向大尺寸制备的高效稳定有机阴极界面材料提供理论依据，取得国内首创、国际有影响力的科研成果。

Flexible printed polymer solar cell is a new type of photovoltaic technologies with low-cost, light weight and broad applicability, which is a practical solution to the problems of worsening environment and the depletion of non-renewable energy reserves. Along with the demonstration of roll-to-roll printed organic solar cell module, the study on materials and devices toward large-scale low-cost and flexible device is triggered. However, currently the development of large-scale device faces many challenges. One of the solution is to use highly efficient and stable organic cathode interface layer. In this study, different kinds of organic cathode interface materials with good solution-processing ability and high performance will be used, realizing the high transport and extraction efficiency of electron in large-scale printed devices. The stability of the cathode interface under water and oxygen stress will be investigated systematically. The film quality will be optimized. We want to find out organic cathode interface materials with high efficiency and good stability, reveal the decay mechanisms and the method for interface material printing optimization. The above study will lead to the realization of optimal interface layer, and will provide the design theory for the materials development toward large-area fabrication. The outcome of this pioneering work will propel the development of flexible printed polymer solar cell.