【作者】 江艳萍；

【导师】 李祥高；

【作者基本信息】 天津大学 ， 应用化学， 2010， 硕士

【摘要】 染料敏化太阳能电池（DSSC）因其无污染、低成本、高光电转化效率以及稳定性好等特点成为最有发展前景的太阳能电池之一。染料敏化剂作为它的重要组成部分对其光电转化效率有着重要的影响,因此新型染料敏化剂的研究是该领域的前沿课题。本文以联吡啶为原料,经过氧化、硝化、还原以及酰化合成了4,4’-二苯甲酰氨基-2,2’-联吡啶（配体A）和4,4’-二乙酰氨基-2,2’-联吡啶（配体B）,收率分别为59.5%和80.4%。用红外吸收光谱、氢核磁共振谱以及质谱等进行了化合物的结构表征。得到了各步产物的优化合成条件。以硫氰酸铵,4,4’-二羧基-2,2’-联吡啶,4,4’-二苯甲酰氨基-2,2’-联吡啶和4,4’-二乙酰氨基-2,2’-联吡啶为配体,采用一锅法与RuCl3反应制备了染料敏化太阳能电池的敏化染料—顺-二硫氰根-（4,4’-二苯甲酰氨基-2,2’-联吡啶）（4,4’-二羧基-2,2’-联吡啶）钌（Ⅱ）（Dye-A）和顺-二硫氰根-（4,4’-二乙酰氨基-2,2’-联吡啶）（4,4’-二羧基-2,2’-联吡啶）钌（Ⅱ）（Dye-B）。Dye-A和Dye-B在甲醇中最大吸收波长分别是531nm和518nm,其摩尔消光系数分别为0.99×104M-1cm-1和0.75×104M-1cm-1。Dye-A和Dye-B的LUMO能级分别为-3.758eV和-3.717eV,均高于TiO2的导带能级。组装成电池的性能分别是Dye-A:开路电压Voc=0.663V,短路电流密度Isc=6.48 mA·cm^-2,填充因子FF=0.670,能量转换效率η=2.88%;Dye-B:开路电压Voc=0.665V,短路电流密度Isc=5.76mA·cm^-2,填充因子FF=0.687,能量转换效率η=2.63%。更多还原

【Abstract】 Because of its clean, low-cost, high photoelectric conversion efficiency and good stability, dye-sensitized solar cell （DSSC） is one of the most promising solar cells. Dye sensitizer, as an important component of DSSC, impacts on its photoelectric conversion efficiency, so the study on new dye sensitizer is a focus in this field.In this paper, 4,4’-dibenzoylamino-2,2’-bipyridine（ligand A） and 4,4’-diacetyl- amino-2,2’-bipyridine （ligand B） were synthesized using bipyridine as raw material , through oxidation, nitration, reduction, and N-acylation reaction, whose yields were 59.5% and 80.4% , respectively. The synthesized compounds were characterized by IR, 1H NMR and MS. At the same time, synthesis conditions for the each step reaction have been optimized.Using―one-pot‖synthetic procedure, dye sensitizers-cis-dithiocyanato- （4,4’-di- benzoylamino-2,2’-bipyridine）-（4,4’-dicarboxy-2,2’-bipyridine） ruthenium（Ⅱ） （Dye- A） and cis-dithiocyanato-（4,4’-diacetyl-2,2’-bipyridine）-（4,4’-dicarboxy-2,2’-bipyri- dine） ruthenium （Ⅱ） （Dye-B） were prepared by a complex reaction of 4,4’-dicarboxy- 2,2’-bipyridine, ligand A（or ligand B） and ammonium thiocyanate with RuCl3. The maximum absorption wavelength of Dye-A and Dye-B is 531nm and 518nm, and their molar extinction coefficient is 0.99×104M-1cm-1 and 0.75×104M-1cm-1 in methanol solution, respectively. The LUMO energy of Dye-A is -3.758eV, and Dye-B is -3.717Ev, both of which were higher than TiO2 conduction band energy level. The performances of the DSSC assembled with Dye-A are thatηis 2.88%, Voc is 0.663V, Isc is 6.48 mA·cm^-2 and FF is 0.670. The performances of the DSSC assembled with Dye-B are thatηis 2.63%,Voc is 0.665V, Isc is 5.76 mA·cm^-2 and FF=0.687.更多还原