研究多层薄膜光电转换体系的AFM新方法

项目名称： 研究多层薄膜光电转换体系的AFM新方法

项目编号： No.21473147

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 毛秉伟

作者单位： 厦门大学

项目金额： 95万元

中文摘要： 固-固界面广泛存在于众多的能源器件中并对器件性能产生重要影响。然而，目前研究固-固界面结构和性质的方法匮乏，影响了对界面过程基本问题的理解。本项目提出和建立一种动态构建和研究固-固系统的原子力显微镜（AFM）新方法，将AFM从表面分析技术拓展为具有固-固界面研究能力的表征方法。 运用所建立的固-固界面AFM新方法，针对薄层光电转换体系（如铅基有机-金属杂化钙钛矿型太阳能电池）的机理、稳定性和材料拓展等基本问题，通过构建材料和界面构型确定的固-固系统，研究影响材料内部和界面的电荷分离、传输和收集过程的关键因素，并建立材料与界面筛选的简便方法。 进一步尝试固-固界面AFM与光谱的联用，研究界面的结构与性能的关系。本项目研究工作对于发展固-固界面方法学并揭示薄膜光电转换体系一些基本问题有着重要的实际意义。

中文关键词： 原子力显微镜；固-固界面；薄膜太阳能电池；钙钛矿；能源材料

英文摘要： Solid-solid interfaces exist in a variety of energy conversion devices and influence the performance of the devices significantly. However, there is a lack of methods to investigate the structures and properties of the solid-solid interfaces, which have limited understanding of the basic processes of the interfaces. This proposal attempts to establish a novel AFM method that can dynamically construct and investigate solid-solid interfaces so that the functions of AFM is extended from being a surface analysis tool to be an active participant of solid-solid system for study of solid-solid interfaces. Employing the solid-solid interface AFM to established, investigations on the mechanism and stability of as well as the materials for thin film light conversion systems, such as lead-based organic-metal hybrid perovskite type of solar cell, will be carried out by constructing solid-solid systems of well-defined materials and interfaces. The key factors that influence the charge separation, transfer and collection inside materials and at the interfaces will be investigated. Furthermore, the solid-solid interface AFM is to be combined with spectroscopic techniques to elucidate structure and property relationships of solid-solid systems. The investigations to be carried out within the framework of this proposal are expected to be highly significant on the development of methodology for characterization of solid-solid interfaces and thus elucidate some basic issues in the thin film light conversion systems.

英文关键词： Atomic force microscopy;Solid-solid interface;thin film solar cell;Provskite;Energy materials