新型香豆素敏化染料的合成及性能研究

发布时间：2019-04-25 11:33

【摘要】：随着人类社会的不断发展,能源和环境问题变得越来越突出,寻找一种可再生且对环境友好的能源来替代传统的不可再生能源,以解决能源危机。太阳能电池可以将太阳能直接转换成电能,受到国内外众多研究者的关注。染料敏化太阳能电池作为一种新型的太阳能电池因其成本低,合成工艺简单,光电转换效率相对较高等优点受到了较为深入的研究。作为染料敏化太阳能电池的关键组成部分,染料敏化剂对电池的光电转换效率具有重要的影响,而非金属有机染料由于其高光电转换效率,廉价的生产成本和简单的制备过程等优点,成为了研究者研究的热点。本文设计合成了两个新型香豆素染料,并以其作敏化剂制备成染料敏化太阳能电池,对其性能进行了研究。第1章简要论述了染料敏化太阳能电池的结构和工作原理以及衡量电池性能的基本参数,同时还阐述了染料敏化剂的特点及分类,综述了近些年来太阳能电池香豆素染料敏化剂的研究进展,最后引出了本论文的设计思想和研究内容。第2章以具有不同电子传输能力的苯并噻二唑苯和苯并噻二唑噻吩基团作为副吸电子基团,以香豆素连接基团作为染料的电子供体(donor),以氰基乙酸为染料的电子受体(acceptor),设计并合成了两种新型的D-A-π-A体系的香豆素染料CS-1和CS-2。第3章对两种染料进行了光物理和电化学性能研究,并以CS-1和CS-2为敏化剂的染料敏化太阳能电池进行了光伏性能的初步研究。第4章结论。
[Abstract]:With the continuous development of human society, energy and environment problems become more and more prominent. To find a renewable and environmentally friendly energy to replace the traditional non-renewable energy, in order to solve the energy crisis. Solar cells can convert solar energy directly into electric energy, which has been paid attention to by many researchers at home and abroad. Dye-sensitized solar cells, as a new type of solar cells, have been deeply studied because of their low cost, simple synthesis process and relatively high photoelectric conversion efficiency. As a key component of dye-sensitized solar cells, dye sensitizers play an important role in the photoelectric conversion efficiency of solar cells, while non-metallic organic dyes have high photoelectric conversion efficiency. The advantages of cheap production cost and simple preparation process have become the focus of researchers' research. In this paper, two new coumarin dyes were designed and synthesized and used as sensitizers to prepare dye-sensitized solar cells. In chapter 1, the structure and working principle of dye-sensitized solar cells and the basic parameters for measuring the performance of the cells are briefly discussed. At the same time, the characteristics and classification of dye-sensitizers are also described. The research progress of coumarin dye sensitizer in solar cells in recent years is reviewed. Finally, the design idea and research contents of this paper are introduced. In chapter 2, benzothiadiazole and benzothiadiazole thiophene groups with different electron transport capacity are used as the secondary electron-absorbing groups, and coumarin-linked groups as electron donors of the dye (donor), Two novel coumarin dyes, CS-1 and CS-2., were designed and synthesized by using cyanoacetic acid as electron acceptor (acceptor),. In chapter 3, the photophysical and electrochemical properties of two dyes were studied, and the photovoltaic properties of dye-sensitized solar cells using CS-1 and CS-2 as sensitizers were studied. Chapter 4 conclusion.
【学位授予单位】：河北师范大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TQ610.1;TM914.4

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