功能化的纳米ZnO作为阴极缓冲层在聚合物太阳能电池中的应用

发布时间：2018-05-20 04:33

本文选题：氧化锌纳米阵列(Zn + O　；参考：《南昌大学》2015年硕士论文

【摘要】：聚合物太阳能电池由于其具有质量轻,成本低,机械柔性好以及易于实现大面积的生产等优点,成为当下研究的热点。但当前聚合物太阳能电池的效率还是较低,目前提高聚合物太阳能电池效率的途径主要通过设计合成新的活性层材料,活性层的形貌调控以及电极和活性层之间的界面优化等。其中电极和活性层之间的界面优化起着非常重要的作用。良好的界面层材料不仅可以改善无机的金属电极和有机的活性层之间的接触,降低界面势垒;还能够调节各接触界面的能级,提高电荷的选择性,进而促进电荷的传输和收集,最终提高器件的效率。同时,界面层还能有效地避免空气中水氧的侵蚀,在一定程度上还能提高器件的稳定性。本论文主要研究功能化的纳米氧化锌(nano-ZnO)作为阴极缓冲层来优化聚合物太阳能电池的性能。首先我们用水热法制备了氧化锌纳米阵列(ZnO NAs),并对所得到的ZnO NAs进行了相应的性能测试和表征。为了减小Zn O NAs表面的缺陷,改善ZnO NAs表面性能,提高聚合物太阳能电池的光电性能,我们用连续离子吸附法生长的CdS纳米层作为表面改性剂对其进行表面功能化。引入CdS纳米层对ZnO NAs表面进行功能化后,聚合物太阳能电池的光电流(Jsc),开路电压(Voc),填充因子(FF)和器件光电转化效率(PCE)均得到了较为明显地提高。而且在杂化太阳能电池器件结构中,引入CdS纳米层后,杂化太阳能电池的相关器件性能参数也得到了明显的提高。而且为了简化实验的工艺,随后我们还用全(十三)氟辛基三乙氧基硅烷来氟化ZnO NPs,并将其掺入到活性层中。由于含氟烷基链的表面能较低,经过溶剂退火,含氟的氧化锌纳米粒子(用Zn OF NPs来表示)会自发的上漂形成一薄层电子传输层,最终达到能够改善有机活性层和电极间的接触又能够简化实验工艺的目的。综上,设计一个好的界面层材料不仅能够提高器件的效率,还能够简化器件制备的工艺,降低成本,这对以后的大面积商业化生产大有裨益。而且结合无机纳米晶和有机聚合物各自的优点,设计新型的界面材料必将对于太阳能电池的发展作出巨大贡献。
[Abstract]:Polymer solar cells have become the focus of research because of their advantages of light quality, low cost, good mechanical flexibility and easy to realize large area production. However, the efficiency of polymer solar cells is still low at present. At present, the main way to improve the efficiency of polymer solar cells is to design and synthesize new active layer materials. The interfacial optimization between the electrode and the active layer plays a very important role in the interface optimization between the electrode and the active layer. The good interface material can not only improve the contact between the inorganic metal electrode and the organic active layer, lower the interface barrier, but also can adjust the contact interface. At the same time, the interface layer can effectively avoid the erosion of water and oxygen in the air and improve the stability of the device to a certain extent. This paper mainly studies the functionalized nano Zinc Oxide (nano-ZnO) as the cathode buffer layer to optimize the polymerization. The performance of the hybrid solar cells. First, we prepared the Zinc Oxide nanoarray (ZnO NAs) by hydrothermal method, and carried out the corresponding performance testing and characterization of the obtained ZnO NAs. In order to reduce the defects of the Zn O NAs surface, improve the NAs surface performance of ZnO and improve the photoelectric performance of the polymer solar energy battery, we use continuous ion adsorption method. The surface functionalization of the growing CdS nano layer as a surface modifier. After introducing the CdS nano layer to the function of the ZnO NAs surface, the photocurrent (Jsc), the open circuit voltage (Voc), the filling factor (FF) and the photoelectric conversion efficiency (PCE) of the polymer solar cells have been greatly improved. Moreover, the hybrid solar cell is used in the hybrid solar cell. In the structure, after the introduction of the CdS nano layer, the performance parameters of the related devices of hybrid solar cells have also been significantly improved. In order to simplify the experiment process, we also fluorinate ZnO NPs with all (thirteen) fluorocococyl triethoxy silane and add it to the active layer. The fluorinated Zinc Oxide nanoparticles (expressed by Zn OF NPs) will spontaneously float up to form a thin layer of electron transport layer, and finally achieve the purpose of improving the contact between the organic active layer and the electrode. In the end, the design of a good interface material can not only improve the efficiency of the device, but also simplify the efficiency of the device. The process of device preparation reduces the cost, which is of great benefit to large-scale commercial production in the future. Moreover, combining the advantages of inorganic nanocrystals and organic polymers, the design of new interface materials will make great contributions to the development of solar cells.
【学位授予单位】：南昌大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ132.41;TM914.4

【参考文献】