We synthesized novel organic photosensitizers based on fluorine-substituted phenothiazine with thiophene bridge units in the chromophore for application in dye-sensitized solar cells (DSSCs). Furthermore, organic dyes with different acceptors exhibited higher molar extinction coefficients, and better light absorption at longer wavelengths. The photovoltaic properties of organic dyes composed of different acceptors in their chromophores were measured to identify their effects on the DSSC performance. The organic dye, PFSCN2 containing multi-cyanoacrylic acid as the electron acceptor, showed a power conversion efficiency of 4.67% under AM 1.5 illumination (100 mW/cm2). The retarded recombination kinetics from TiO2 electrode to electrolyte enhanced the electron life time of the organic dye, PFSCN2 in the photoanode of the DSSC. This was confirmed with impedance analysis.
我们合成了基于
氟取代的苯
噻唑与
噻吩桥接单元的新型有机光敏剂,旨在应用于
染料敏化太阳能电池(DSSC)。此外,具有不同受体的有机
染料表现出了更高的摩尔消光系数,并在更长波长下具有更好的光吸收。我们测量了由不同受体组成的有机
染料在其色素中的光电性能,以识别其对DSSC性能的影响。含有多
氰基
丙烯酸作为电子受体的有机
染料PFSCN2在
AM 1.5照射下(100 mW/cm²)显示出4.67%的光电转换效率。TiO2电极与电解质之间的
重组动力学减缓增强了有机
染料PFSCN2在DSSC光阳极中的电子寿命。这一点通过阻抗分析得到了验证。