通过酰胺键将酞菁(电子给体单元)和苝二酰亚胺(电子受体单元)偶联,合成了新型的酞菁一花分子异质结,其在二氯甲烷、氯仿、四氢呋喃等常用溶剂中有较好的溶解度.紫外光谱分析表明其吸收光谱是酞菁和花二酰亚胺信号的叠加,出现在300-780am之间.该分子摩尔消光系数高达105L·mol-10cm叫数量级,说明具有较宽的太阳光谱覆盖范围和很高的吸光系数.基于这些良好的光谱响应特性,制备了以该分子与[6,6].苯基-C61-丁酸酸甲酯(pc6lBM)为光活性层的有机太阳能电池(OSCs),该电池器件结构为ITO/聚(3,4-乙撑二氧噻吩):聚苯乙烯磺酸(PEDOT:PSS)/酞菁-苝给受体分子:PC6lBM/Ca/A1,光电转换效率(PCE)为0.009%,对应的开路电压(%。)为0.472V,短路电流(Jac)为0.104mA/cm2,填充因子(FF)为0.18.
A novel phthalocyanine (Pc)-perylene diimide (PDI)-Pc donor-acceptor molecular heterojunction was synthesized through amidation of an asymemetric Pc-carboxylic acid and PDI-diamines, and it is well soluble in common solvent such as dichloromethane, chloroform, and tetrahydrofuran. It shows an broad absorption band covering the whole visible region from 300 to 780 nm, and its molar extinction coefficient reaches as high as l0s Lomol-locm-1. Such an adsorption band originates from both the PDI and PC units. Considering the excellent light-harvesting ability, organic solar cells (OSCs) based on the synthetic compound and [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) were fabricated with the configurations of ITO/poly(3,4-ethylenedioxythiophene):poly-styrenesulfonate (PEDOT:PSS)/phthalocyanine-perylene:PC61BM/Ca/Al. One of the OSC devices showed a power conversion efficiency (PCE) of 0.009% with an open-circuit voltage (Voc) of 0.472 V, a short circuit current (Jsc) of 0.104 mA/cm2 and a fill factor (FF) of 18.2%.