介观太阳能电池碳对电极研究

发布时间：2018-05-16 12:19

本文选题：介观太阳能电池 + 对电极　；参考：《华中科技大学》2015年硕士论文

【摘要】：介观太阳能电池因具有独特的介孔结构而得名。这种介孔结构为器件提供了大比表面积,使其能够吸收更多的光子,进而获得更大的光电流。目前,介观太阳能电池已公证的最高光电转化效率可达20.1%。不仅如此,该种太阳能电池还具有制作工艺简单、材料价格低廉等优点,是太阳能电池领域有力的竞争者之一。对电极是介观太阳能电池不可或缺的一部分,其在器件中的功能是收集还原氧化还原电对的电子或收集空穴传输材料中的空穴。因此,对电极需要具有良好的导电性和催化活性。目前,介观太阳能电池中常用Pt、Au等稀有金属,且一般通过真空蒸镀等手段制成对电极,因此其材料及制作成本均相对昂贵。本课题组使用的可印刷碳电极不仅价格低廉而且制作工艺简单,大大降低了器件的制作成本。基于该种碳电极,本论文主要研究了碳电极中的主要成分(即石墨、碳黑)对不同类型介观太阳能电池光电转化效率的影响。具体研究内容包括:首先,分别研究不同尺寸石墨对液态染料敏化太阳能电池以及介观钙钛矿电池的影响,最终基于8?m石墨的对电极在两种器件中分别获得了6.11%和11.56%的光电转化效率;其次,采用快速混合法制成了50 nm的聚苯胺炭化纤维,并将其与石墨混合制成对电极应用在全印刷介观钙钛矿电池中,获得了11.84%的光电转化效率。
[Abstract]:Mesoscopic solar cells are named for their unique mesoporous structure. This mesoporous structure provides the device with large specific surface area, which enables it to absorb more photons and obtain larger photocurrent. At present, the highest photovoltaic conversion efficiency of mesoscopic solar cells can reach 20.1g. Moreover, the solar cell is one of the most powerful competitors in the field of solar cell because of its simple manufacturing process and low cost of materials. Pair electrode is an indispensable part of mesoscopic solar cell. Its function in the device is to collect the electrons of the reductive redox pair or the hole in the hole transport material. Therefore, the electrode should have good conductivity and catalytic activity. At present, in the mesoscopic solar cells, the rare metals such as PTO au are commonly used, and the opposite electrodes are usually made by vacuum evaporation. Therefore, the cost of materials and fabrication is relatively expensive. The printable carbon electrode used by our group is not only cheap, but also simple in fabrication process, which greatly reduces the cost of device fabrication. Based on this kind of carbon electrode, the effect of the main components of carbon electrode (i.e. graphite, carbon black) on the photoelectric conversion efficiency of different types of mesoscopic solar cells is studied in this paper. The main contents are as follows: firstly, the effects of graphite on liquid dye sensitized solar cells and mesoscopic perovskite cells were studied. Finally, the optoelectronic conversion efficiency of the opposite electrode based on 8m graphite was 6.11% and 11.56% respectively in two kinds of devices. Secondly, the 50 nm Polyaniline carbonized fiber was prepared by rapid mixing method. The optoelectronic conversion efficiency was 11.84% when the counter electrode was mixed with graphite to be used in the whole printed mesoscopic perovskite cell.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM914.4

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