石墨烯的化学气相沉积法制备及其与PEDOT:PSS的复合界面改性研究

发布时间：2018-02-21 11:57

本文关键词： 化学气相沉积法石墨烯 PEDOT PSS 界面改性　出处：《华北电力大学》2015年硕士论文　论文类型：学位论文

【摘要】：石墨烯是一种具备优异的光、电、热、力等性能的新型二维碳材料,近几年迅速成为材料等领域的研究焦点,以石墨烯为基础的电子器件等也吸引了大量的研究。将石墨烯作为电极应用于有机太阳能电池的过程中,因为石墨烯表面的疏水性质,PEDOT:PSS高分子导电层不能均匀覆盖在石墨烯表面,二者成膜性差,从而导致石墨烯为电极的有机太阳能电池的制备成功率低。从更好地将石墨烯应用于太阳能电池中这个目的出发,本文的主要内容包括以下三部分：采用化学气相沉积法在铜箔表面生长石墨烯,通过对部分工艺参数的调控来得到高质量石墨烯,在生长石墨烯的金属基底预处理步骤以及石墨烯的转移步骤中提出简单高效的工艺方法,进一步优化了石墨烯的生长过程和转移过程的工艺。针对石墨烯与PEDOT:PSS复合成膜性差这个问题,提出了两种有效解决手段：一是利用紫外／臭氧处理方法在合适条件下将石墨烯表面从疏水性转变为亲水性,从而使PEDOT:PSS水溶液能够均匀地旋涂在石墨烯表面；二是在PEDOT:PSS水溶液中掺杂一定比例的表面活性剂(Zonyl)来改变PEDOT:PSS的润湿性,使其能够有效地在石墨烯表面均匀成膜。最后,从固-液接触角理论出发,提出了利用氧化锌纳米阵列对石墨烯与PEDOT:PSS的复合界面进行改性的想法并利用实验加以验证,该方法通过改变石墨烯表面的粗糙度进而能改变PEDOT.PSS溶液与石墨烯之间的接触角。采用水热法在石墨烯表面生长氧化锌纳米阵列,再利用扫描电子显微镜对该阵列薄膜的表面形貌和阵列结构进行表征,最后将PEDOT:PSS溶液旋涂于该石墨烯片上以观测二者的复合效果。
[Abstract]:Graphene is a kind of excellent optical, electrical, thermal, a new two-dimensional carbon material force performance, rapidly in recent years become the focus of research materials in the fields of graphene based electronic devices have attracted a lot of research. The graphene as electrode for organic solar cell because in the hydrophobic properties of graphene surface, PEDOT:PSS conductive polymer layer can not be covered uniformly on the surface of graphene, the two film, resulting in graphene organic solar cell electrode preparation. The low success rate from a better Shi Moxi will be used for this purpose in a solar cell, the main content of this paper including the following three parts: Shi Moxi growth on the surface of copper foil by chemical vapor deposition method to obtain high quality graphene by regulating some parameters, the metal substrate pretreatment process of growth of Shi Moxi The proposed method is simple and efficient process and graphene transfer steps in optimizing the growth process and the transfer process of graphene. The graphene and PEDOT:PSS compound into the problem of poor film, put forward two effective solutions: one is to use ultraviolet / ozone treatment method under suitable conditions on the surface graphene from hydrophobic to hydrophilic, so that the PEDOT:PSS solution can be uniformly spin coated on the surface of graphene; two is the surfactant in the aqueous solution of PEDOT:PSS doping proportion (Zonyl) to change the wettability of PEDOT:PSS, which can effectively on the surface of graphene film. Finally, starting from the solid-liquid contact angle theory, put forward by Zinc Oxide nano array composite interface of graphene and PEDOT:PSS modified the ideas and methods are verified by experiment, the method by changing the graphite Graphene surface roughness which can change between PEDOT.PSS solution and graphene by hydrothermal method. The contact angle on the surface of graphene growth Zinc Oxide nano array, then the surface morphology and structure of the array array films were characterized by scanning electron microscopy, the PEDOT: PSS solution was spin coated on the graphene sheet to composite effect observation of the two.

【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ127.11

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