PEDOT:PSS薄膜的光电性能提升、机理研究及其在第三代太阳能电池中的应用

项目名称： PEDOT:PSS薄膜的光电性能提升、机理研究及其在第三代太阳能电池中的应用

项目编号： No.61504015

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 孙宽

作者单位： 重庆大学

项目金额： 20万元

中文摘要： 柔性的透明电极在现代光学电子元件中扮演着举足轻重的角色。聚(3,4-亚乙二氧基噻吩)-聚(苯乙烯磺酸)(PEDOT:PSS)具备良好的成膜性、透光性和柔性，很有潜力成为下一代透明电极材料。但是PEDOT:PSS目前存在电导率低的问题。本项目拟对PEDOT:PSS薄膜进行溶液处理，通过完全去除薄膜中多余的PSS绝缘组分，力争揭示PEDOT:PSS薄膜的极限电导率。进而通过金属纳米材料掺杂，利用其高导电率和表面等离子共振效应，进一步提升PEDOT:PSS薄膜的光电性能。项目还将对基底进行物理处理或化学改性，解决PEDOT:PSS薄膜与基底的附着力低的问题。项目拟对不同掺杂材料、溶液浓度、处理温度等实验条件对电导率的影响进行研究；进而对薄膜的结构、PSS组分分布、光电特性进行表征，了解其微观形貌并提出导电机制；并最终将其作为柔性透明电极运用在第三代太阳能电池。

中文关键词： 透明导电薄膜；柔性衬底；光透过率；电导率；作用机理

英文摘要： Flexible transparent electrode plays an indispensible role in modern optoelectronic devices. Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) exhibits excellent film-forming properties, transparency and flexibility, thus is potentially to become the next-generation transparent electrode material. However, PEDOT:PSS currently suffers from low electrical conductivity. The project aims to reveal the conductivity limit of PEDOT: PSS thin films through solution treatment, which hopefully could completely remove the excess insulating PSS component in the film. Next, through doping with metal nano-materials, the optical and electrical properties of the PEDOT:PSS film will be further enhanced due to the intrinsically high conductivity and surface Plasmon effect of these metal nano-structures. Furthermore, substrates will undergo physical or chemical treatment to solve the problem of poor adhesion between PEDOT:PSS film and the substrate. The project will study the effects of different dopant materials, solution concentration, treatment temperature and other experimental conditions on the conductivity; then characterize the film structure, PSS distribution as well as optical and electrical properties of treated PEDOT:PSS films, thus understand the microstructure and propose electrical conduction mechanism; and ultimately, explore its potential application as flexible transparent electrodes in third generation solar cells.

英文关键词： transparent conducting thin film;flexible substrate;transmittance;conductivity;working mechanism