Ternary blend (TB) strategy has been considered as an effective method to enhance the photovoltaic performance of bulk heterojunction (BHJ) polymer solar cells (PSCs). Here, we report on TB-based PSCs containing two donor materials; poly-3-hexylthiophene (P3HT) and Rhodamine B (RhB) laser organic dye, and [6,6]-phenyl C₆₁ butyric acid methyl ester (PC₆₁BM) as an acceptor. The influence of RhB weight percentage and injection volume was extensively studied. To gain insight into the influences of RhB on the photovoltaic performance of PSCs, physicochemical and optical properties of TBs were compared with those of BHJ binary blend as a standard. RhB broadened the light absorption properties of the active layer and played a bridging role between P3HT and PC₆₁BM. The PCE and short-circuit current density (Jsc) of the optimized TB-based PSCs comprising of 0.5 wt% RhB reached 5% and 12.12 mA/cm², respectively. Compared to BHJ standard cell, the PCE and the generated current was improved by two orders of magnitude due to higher photon harvest of the active layer, cascade energy level structure of TB components and a considerable decrease in the charge carrier recombination. The results suggest that RhB can be considered as an effective material for application in PSCs to attain high photovoltaic performance.

三元共混（TB）策略已被认为是增强体异质结（BHJ）聚合物太阳能电池（PSC）光伏性能的有效方法。在此，我们报告了基于结核的PSC，其中包含两种捐赠材料。聚-3-己基噻吩（P3HT）和若丹明B（RhB）激光有机染料，以及[6,6]-苯基C ₆₁丁酸甲酯（PC ₆₁ BM）作为受体。广泛研究了RhB重量百分比和注射量的影响。为了深入了解RhB对PSC光伏性能的影响，将TB的理化和光学性质与以BHJ二元共混物为标准进行了比较。RhB拓宽了有源层的光吸收性能，并在P3HT和PC ₆₁之间起到了桥梁作用BM。包含0.5 wt％RhB的优化的基于TB的PSC的PCE和短路电流密度（Jsc）分别达到5％和12.12 mA / cm ²。与BHJ标准电池相比，由于有源层的光子收获量更高，TB组件的级联能级结构以及电荷载流子重组的显着减少，PCE和产生的电流提高了两个数量级。结果表明，RhB可被认为是在PSC中获得高光伏性能的有效材料。