石墨烯调控导电聚合物分子的界面效应与输运性质的研究

项目名称： 石墨烯调控导电聚合物分子的界面效应与输运性质的研究

项目编号： No.21304096

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 马晓晶

作者单位： 中国科学院长春应用化学研究所

项目金额： 24万元

中文摘要： 石墨烯具有优异的结构和物理化学性质，以石墨烯作为半导体器件的构筑材料之一，利用石墨烯与聚3-烷基噻吩（P3AT）之间的相互作用，有效提高基于P3AT器件的效率和稳定性是当前研究热点之一。近年来，人们构筑了以石墨烯为受体材料、空穴传输层以及电极材料等器件，但这些器件效率并未见明显提高，甚至有时会有所降低。针对这种情况，本项目拟首先利用扫描隧道显微镜/扫描隧道谱（STM/STS）研究石墨烯与P3AT界面相互作用的分子机制，然后考察石墨烯对P3AT界面聚集行为和输运性质的调控。试图从分子水平作用机制- - 微纳尺度聚集结构- - 器件输运性质三个层次上理解石墨烯如何对P3AT的界面结构和性质实现调控，并系统研究不同条件下（内因：石墨烯含量，层数等；外因：溶剂、退火等）石墨烯对P3AT界面组装及输运性质的调控，为提高基于石墨烯和导电聚合物器件的效率提供理论依据和实验支持。

中文关键词： 聚3-己基噻吩；氧化石墨烯；扫描探针显微镜；界面作用；

英文摘要： Due to the excellent structures and properties, graphene(G)/graphene oxide (GO) has been chosen as one of the main materials to build polymer-based devices to improve the efficiency and stability by making use of the interactions between G/GO and poly(3-alkylthiophene)(P3AT), which has been one of the hot research topic currently. Recently, devices with GO/G working as electric acceptor, hole transport layer and electrode etc. have been explored. However, the results are challenging, since it was found that the performance of such device is no better than those without G/GO. Based on this fact, this project is designed to understand the molecular mechanism of the interactions between P3AT and G/GO by using scanning tunneling microscopy/scanning tunneling spectroscopy (STM/STS) combined with the theory calculation. Then the effect of addition of GO on the structures and morphophy of the film will be studied further and discussed in detail. The purpose of this project is to understand how the G/GO affects the interfacial structures and properties of P3AT from three levels: interaction mechanism at molecular level - - the structures and morphophy at micro/nano level- - the transport properties of the devices. And also the effects of the content of GO, layer number and annealing etc. on the structures and properties

英文关键词： Poly(3-hexylthiophene)；Graphene Oxide；Scanning Probe Microscopy；Interfacial Interactions；