高效率倒置型高分子薄膜太阳能电池研究

项目名称： 高效率倒置型高分子薄膜太阳能电池研究

项目编号： No.51273193

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 一般工业技术

项目作者： 谢志元

作者单位： 中国科学院长春应用化学研究所

项目金额： 81万元

中文摘要： 针对传统正置结构高分子薄膜太阳能电池普遍采用PEDOT:PSS(其吸湿性和弱酸性影响器件性能和长期稳定性)和低功函数金属(不易于实施大面积溶液加工)所面临的具体科学问题，提出开展高效率倒置结构高分子薄膜太阳能电池研究。本项目以提高倒置结构高分子薄膜太阳能电池的能量转换效率为核心目标，重点研究开发适合溶液加工技术的电极界面材料和界面技术，通过界面材料电子结构调控实现与活性层材料的欧姆接触，抑制界面载流子复合和提高电荷收集效率；调控界面层薄膜表面性质构建利于载流子传输的上层活性层的聚集态结构。获得适合大面积溶液加工技术的具有自主知识产权的界面材料和高效光伏电池制备技术。预期倒置光伏电池的能量转换效率达到8%以上，发表高水平学术论文10篇，申请中国专利3件。

中文关键词： 共轭聚合物；光伏电池；倒置结构；界面材料；稳定性

英文摘要： Research on polymer solar cells has been intensified in recent years because polymer solar cells have a potential to generate electricity from sunlight at low cost.The typical device geometry of polymer solar cells comprises a bottom indium tin oxide (ITO) anode, a poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) anode interfacial layer, a bulk-heterojunction active layer and a low-work-function top metal cathode.This kind of polymer solar cells not only requires vacuum deposition of low-work-function metals, but also is concerned with the inherent device instability due to the hygroscopic and acidic nature of PEDOT:PSS.These problems will block the large-area roll-to-roll fabrication of polymer solar cells and their future commercial application.Inverted polymer solar cells have received a great deal of attention in recent years because of their compatibility with large-scale roll-to-roll processing and the potential for long-term stability.In this project, we propose to develop high power conversion efficiency inverted polymer solar cells without using PEDOT:PSS and low work-function metal cathode.The key point for constructing high-efficiency inverted polymer solar cells is to develop a highly transparent cathode interfacial layer coated on ITO to enhance electron extraction and restrain

英文关键词： conjugated polymer；photovoltaic cell；inverted structure；interfacial material；stability