论文总字数：22636字

摘 要

石墨烯是近十余年新兴的具有二维平面结构的材料，与常见的三维立体材料有很大的不同。石墨烯由于其原子级超薄厚度及其在各方面与众不同的优异特性，在被发现之初，便被寄予厚望。石墨烯在制备过程中会出现晶界等缺陷，在转移的过程中也非常容易产生褶皱和破洞，这使得其大规模的制备成为难点，其走向实际应用还有一定的距离。采用石墨烯-金属纳米复合结构可以有效改善由于制备工艺而造成的缺陷，并得到一个更加均衡高效的综合性能的体现，因此石墨烯与金属纳米材料之间结合的方式也成为了石墨烯和金属纳米材料研究的重要方向之一。本文尝试用化学气相沉积法制备石墨烯，对制备参数进行探索和改进，并且对石墨烯-铜纳米材料形成的复合薄膜进行了制备和表征。

第一章首先介绍了石墨烯与金属纳米材料的概况。简要介绍了石墨烯的性质以及制备方法，金属纳米材料的性质及应用，以及石墨烯-金属纳米复合材料的研究现状。

第二章介绍了化学气相沉积法（CVD）制备石墨烯的研究现状，石墨烯的制备以及转移的方法，以及石墨烯样品的形貌表征。

第三章介绍了石墨烯-铜纳米结构复合膜的制备方法，简单介绍了铜纳米结构的制备方法，对实验所用的铜纳米结构进行了扫描电镜的表征，并对石墨烯-铜纳结构复合膜的电导率和透光率进行了测试。

第四章对本论文进行了总结，通过对样品的表征结果，对实验过程中的操作与工艺表现出的不足与可改进之处进行分析。

关键词：石墨烯 纳米复合结构 制备 电导率 透光率

Abstract

Graphene is a semiconductor material which has special morphology of two-dimensional. It is different from the common three-dimensional materials. Graphene is of great interest not only for its unique properties, but also for their potential applications in the fields of transparent conductive films (TCF).

However, in its practical application, large-scale production and precision preparation is still a challenge for the fine structure. We can improve the defects caused by preparation process and get a more efficient comprehensive performance by using graphene-metal nanocomposite structure. Thus the combination of the metal nanomaterials and the graphene has become an important research direction. In this paper, Large-scale graphene films using chemical vapor deposition (CVD) can be synthesized on metal surface and subsequently transferred to the arbitrary substrates. The polycrystalline structure of CVD-grown graphene films has the high density of the topological defects such as line dislocations and grain boundaries (GB), which generate highly variable resistance as well as mechanical strength.

In the first chapter, we introduced graphene and metal nanostructures. The preparation and applications of graphene-metal nanocomposites were briefly introduced.

In the second chapter, we introduced the synthesise of graphene using chemical vapor deposition (CVD) method. The transfer process was also introduced in detail.

In the third chapter , we introduced the method of preparing graphene - copper nanostructure composite film. The conductivity and optical transmittance of graphene - copper nanostructure composite film were tested .

In the last chapter, we drew a conclusion of this thesis. we analyzed the shortcomings and some improvements of needing to be made in experimental process. We also put forward our own assumptions and views.

Key Words: Graphene; Nanocomposites; Praperation; Surface resistance; Optical transmittance

目录

摘要 III

Abstract IV

第一章 绪论 1

1.1石墨烯材料概述 1

1.1.1石墨烯的结构与性能 1

1.1.2石墨烯的制备方法 2

1.2纳米材料概述 3

1.2.1纳米材料的性质及应用 3

1.3石墨烯-金属纳米复合结构 3

1.3.2石墨烯-金属纳米复合结构的性能及应用 3

1.3.2石墨烯-金属纳米复合结构的研究现状 3

1.4 本论文研究内容 4

参考文献 4

第二章 石墨烯的制备与表征 8

2.1 引言 8

2.2实验材料及设备 8

2.3石墨烯的制备 9

2.3.2实验前准备 9

2.3.2石墨烯的生长 9

2.3.3石墨烯转移至硅片基板 10

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