Benzodithiophene and thienopyrroledione containing two random copolymers were designed and synthesized. Electrochemical and optical studies prove that these copolymers could be candidates for organic solar cells applications. The HOMO and LUMO values were determined using cyclic voltammetry as −5.53 and −3.43 eV for P1 and -5.54 and −3.53 eV for P2, respectively. The optical band gaps of the polymers were calculated as 2.10 and 2.01 eV using UV-VIS spectroscopy for P1 and P2, correspondingly. Bulk-heterojunction solar cells were constructed with the configuration of ITO/PEDOT:PSS/Polymer:PC₇₁BM/LiF/Al and the synthesized polymers were used as the electron donors and PC₇₁BM as the electron acceptor in the active layer. The best performance was observed for device of P2 1:2 (w:w) ratio with a V_oc 0.80 V, a J_sc of 14.02 mA/cm², a fill factor of 52%, and a PCE of 5.83% under standard AM 1.5 G at 100 mW/cm².

设计并合成了含有两种无规共聚物的苯并二噻吩和噻吩并吡咯酮。电化学和光学研究证明，这些共聚物可以成为有机太阳能电池应用的候选材料。使用循环伏安法作为-5.53和-3.43 eV的用于测定的HOMO和LUMO值P1和-5.54和-3.53电子伏特为P2分别。相应地，使用UV-VIS光谱法针对P1和P2将聚合物的光学带隙计算为2.10和2.01eV 。以ITO / PEDOT：PSS /聚合物：PC ₇₁ BM / LiF / Al的结构构造体-异质结太阳能电池，并将合成的聚合物用作电子供体，并使用PC ₇₁BM作为活性层中的电子受体。在标准条件下，对于P2 1：2（w：w）比率的器件，V _oc为0.80 V，J _sc为14.02 mA / cm ²，填充系数为52％，PCE为5.83％，观察到了最佳性能。1.5 m在100 mW / cm ^2下。