In this work, the open-circuit voltage (V_oc) of the dye-sensitized solar cells has been enhanced using a modified ruthenium dye. Two modified ruthenium dyes with formulas: Ru(bpy)₂(bqdi) (PF₆)₂ (Ru-D1) and Ru(bpy)₂(dmbqdi) (PF₆)₂ (Ru-D2) were prepared with chemical route. The FT-IR, structure, thermal and optical properties of the synthesized dye were investigated using a range of analytical techniques: FT-IR spectrophotometer, XRD diffractometer, differential scanning calorimetry and UV–Vis. spectrophotometer. The structural properties measurements reveal the crystalline nature of Ru-D1 and amorphous nature of Ru-D2 dyes. The photovoltaic performance of the assembled dye-sensitized solar cells (DSSCs) based on the modified ruthenium dye has been explored under 100 mW/cm². The achieved open-circuit voltage (V_oc) values are enhanced to 0.74 V and 0.70 V based on Ru-D1 and Ru-D2 dyes, respectively, as compared with unmodified one (0.6 V). 23% enhancement in V_oc has been achieved for the assembled DSSC based on Ru-D1 dye as compared with that of unmodified one. The obtained power conversion efficiency are 1.46% and 1.13% for Ru-D1 and Ru-D2, respectively. The V_oc decay measurements of the assembled DSSCs based on Ru-D1 and Ru-D2 have exhibited good stability and reproducibility. This novel result presents the modified ruthenium dye as an active candidate in DSCCs applications.

在这项工作中，使用改性的钌染料可以提高染料敏化太阳能电池的开路电压（V _oc）。用化学路线制备了两种化学式为Ru（bpy）₂（bqdi）（PF ₆）₂（Ru-D1）和Ru（bpy）₂（dmbqdi）（PF ₆）₂（Ru-D2）的钌染料。使用多种分析技术对合成染料的FT-IR，结构，热和光学性质进行了研究：FT-IR分光光度计，XRD衍射仪，差示扫描量热法和UV-Vis。分光光度计。结构性能测量揭示了Ru-D1和Ru-D2染料的无定形性质。已经研究了在100 mW / cm ^2的条件下，基于改性钌染料的组装染料敏化太阳能电池（DSSC）的光伏性能。与未经修饰的染料（0.6 V）相比，基于Ru-D1和Ru-D2染料，所获得的开路电压（V _oc）值分别提高到0.74 V和0.70V 。与未修饰的染料相比，基于Ru-D1染料的组装DSSC的V _oc增强了23％。对于Ru-D1和Ru-D2，获得的功率转换效率分别为1.46％和1.13％。在V基于Ru-D1和Ru-D2的组装DSSC的_oc衰减测量显示出良好的稳定性和可重复性。这一新颖的结果提出了改性钌染料在DSCCs应用中作为活性候选物。