我們設計一系列Phenothiazine寡聚物合成策略，成功合成出具有monomer (PT1) 、dimer (PT2)及trimer (PT3) Phenothiazine寡聚物衍生物，並應用於染敏電池元件。這一類新型染敏電池材料，具有穩定的光學性質及及較為高的光電轉換效率特性，經由理論計算結果也可以發現，Phenothiazine在於基態具有很好的分子不共平面的性質，而於激發態中具有很好的平面性，成為很好的分子通道，加上製備成本便宜，很有潛力作為新型染敏電池的新材料。 A series of organic dyes containing oligo-phenothiazine were synthesized and used effectively on the fabrication of dye-sensitized solar cells (DSSCs). These materials exhibit considerably high values of open-circuit voltage (Voc) ranging from 0.78–0.83 V under an AM1.5 solar condition (100 mWcm-2). The best device displayed a short-circuit current (Jsc) of 14.3 mA cm-2, an open-circuit voltage (Voc) of 0.83 V, a fill factor (FF) of 0.65, corresponding to an overall conversion efficiency of 7.78%. Their photophysical properties were analyzed with the aid of a time-dependent density functional theory (TDDFT) model with the B3LYP functional.
