球形分级结构的新型制备方法、形成机理及其在染料敏化太阳能电池中的应用

发布时间：2018-06-21 00:34

本文选题：球形分级结构 + TiO_2　；参考：《南京大学》2014年硕士论文

【摘要】：球形分级结构(Sphere Hierarchical Structure)由于其优异的物理、化学性能,获得科研工作者的广泛关注。但目前球形分级结构的获得常常需要极端的工艺条件,且难以实现大量制备,从而限制了其应用。本文提出了一种新型的球形分级结构的制备方法并研究了其制备机理和应用,具体如下：1、提出了一种新型的球形分级结构的制备方法(polyethyleneglycol (PEG) modification followed by self-assembling PMSA)。研究了该方法的PEG分子量、用量等工艺参数调控,通过TEM、SEM等表征测试方法研究了其微结构特征,获得了TiO2、Fe2O3、ZrO2等具有球形分级结构的材料。2、研究了球形分级结构的形成机制。研究了PEG分子构型与制备条件的关联,提出了干法球磨导致的PEG在纳米颗粒表面的平铺分子构型的改变是形成分级结构的关键原因,并提出了球形分级结构的形成模型。3、研究了Ti02球形分级结构可能的应用。利用其优异的光散射性能研究了其在染料敏化太阳能电池领域的应用,实现了电池的光捕获性能和效率的提高；利用其表面微结构与荷叶表面形貌相似的特点,研究了其表面的超疏水性质。4、基于尖劈微结构的优异光捕获性能及在太阳能电池领域的应用前景,利用管道湿法腐蚀方法制备了新型的光纤和玻纤尖劈微结构,以其为模板通过微结构复制和转移,获得了PMMA等衬底表面的尖劈微结构。
[Abstract]:Spherical hierarchical structure (SPSS) has attracted wide attention due to its excellent physical and chemical properties. However, at present, the obtaining of spherical structure often requires extreme technological conditions, and it is difficult to achieve a large number of preparation, which limits its application. In this paper, a new preparation method of spherical classification structure is proposed, and its preparation mechanism and application are studied, as follows: 1, a new spherical structure preparation method is proposed, which is polyethyleneglycol (PEG) modification followed by self-assembling PMSAA. The control of PEG molecular weight, dosage and other technological parameters were studied. The microstructure characteristics of the method were studied by means of TEM and SEM. The spherical structure of TIO _ 2 Fe _ 2O _ 3 / ZrO _ 2 was obtained, and the formation mechanism of spherical structure was also studied. The relationship between the molecular configuration of PEG and the preparation conditions was studied. It was suggested that the change of molecular configuration of PEG on the surface of nano-particles caused by dry ball milling was the key reason for the formation of hierarchical structure. The formation model of spherical classification structure. 3. The possible application of Ti02 spherical classification structure was studied. Its application in the field of dye sensitized solar cells was studied by using its excellent light scattering properties. The photocapture performance and efficiency of the cells were improved, and the surface microstructure was similar to the surface morphology of lotus leaves. The superhydrophobic properties of the surface. 4. Based on the excellent optical trapping performance of the split microstructures and its application prospect in solar cells, a new type of optical fiber and glass fiber wedge microstructures were fabricated by wet corrosion method. The microstructures of PMMA and other substrates were obtained by microstructural replication and transfer.
【学位授予单位】：南京大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TB383.4;TM914.4

【共引文献】