论文总字数：16930字

摘 要

石墨烯是由碳原子以sp2杂化轨道组成六角形成蜂巢晶格的二维结构。由于它独一无二的构造，在导电率，透光率等方面，石墨烯的表现令人惊叹。因石墨烯拥有许多待开发的应用与性能，石墨烯吸引了大量科研人员的密切关注。目前采用CVD很难生成面积较大的石墨烯。生成的石墨烯，由于在制备和转移的过程中很容易出现一些难以避免的缺陷，从而表现出较高的电阻率。为解决这一问题，我们考虑引入铜线作为“横梁”，联通裂痕和褶皱等瑕疵。给以载流子额外的途径进行传导，以此来增强石墨烯的导电性能。

本文石墨烯的背景入手，介绍了石墨烯的结构及其基本的性质。随后简要地介绍了铜米银线的制备及其表征。重点介绍了采用CVD制备graphene和转移方法，然后将不同浓度的铜纳米线组装到石墨烯上，并对其进行电学测量，观察分析结果。最后，对本实验作了总结，并分析其不足及需要改进之处。

关键词：石墨烯、铜纳米线、透明电极、表面电阻

Abstract

Graphene, a kind of promising 2-dimensionnal material, was tightly packed by a sp²-hybridized monolayer of carbon atoms. Because of the special lattice structure, it has shown amazing physical and chemical properties such as high electrical and thermal conductivity, high optical transmittance and perfect mechanical strength. It has recently attracted significant attention for its potential applications in many technological fields. For the time being, preparing single crystal graphene with large size by chemical vapor deposition (CVD) is a little bit challenging. Compared with single crystal graphene, polycrystalline graphene has a relatively larger sheet resistance, because it exists many defects such as grain boundary, wrinkles and folding during the stage of preparation and transferring, which may increases the scattering of the charge carriers. In order to minimizing the influence of those defects, we used silver nanowires as a “bridge” to connect different crystal domains, which may provide a new way for charge carriers to transport within polycrystalline graphene, and so forth to improve its electrical conductivity.

In the paper, we begin with the background of graphene，then we describe its structure and excellent physical properties as well as the prospection and potential applications. Then we describe the approaches to prepare copper nanowires as well as its transfer process briefly.We mainly introduce the method to acquire graphene with chemical vapor deposition (CVD) as well as its transfer process.Then we try to integrate graphene into copper nanowires. During this progress, we attempt to use different concentrations of copper nanowires solutions to find out a better parameter, so that we can achieve lower sheet resistance. Finally，we draw a conclusion of this thesis. We point out its shortcomings and some improvements needing to be made in the near future.

Key words: Graphene, Copper nanowires, Transparent conductive electrodes, Sheet resistance

目录

摘要 2

Abstract 3

第一章 绪论 1

1.1石墨烯的概况 1

1.1.1石墨烯的基本结构与性质 1

1.1.2石墨烯的研究进展及应用展望 2

1.2铜-石墨烯复合结构概况 3

1.2.1铜纳米线的概况 3

1.3 本论文研究内容 3

参考文献： 4

第二章 石墨烯的制备与表征 5

2.1 化学气相沉积法制备石墨烯 5

2.1.1 实验材料及仪器设备 5

2.1.2 实验制备过程 6

2.2 石墨烯的转移 8

2.3 石墨烯的测试与表征 9

2.3.1 扫描电镜（SEM） 9

2.4 本章小结 10

参考文献： 10

第三章 铜-石墨烯复合结构的制备与表征 11

3.1铜纳米线的制备与表征 11

3.1.1铜纳米线的制备： 12

3.1.2 铜纳米线的表征： 13

3.2 铜-石墨烯复合结构的制备及表征 14

3.2.1 银-石墨烯复合结构的制备 14

3.2.2 方块电阻的测量 15

3.3 本章小结 16

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