Organic solar cells (OSCs) have experienced a rapid progress in terms of efficiency in both single and tandem structures. Herein, two‐terminal (2T) tandem design is fabricated using PV2000:PCBM (1.65 eV) and PM6:Y6 (1.3 eV) blends as bottom and top cells, respectively. The role of transporting and recombination layers on photovoltaic (PV) parameters is studied. The impedance and transmittance results indicate that using SnO₂ nanocrystals (NCs) as an electron transporting layer (ETL) in both subcells, the fill factor (FF) and the open circuit voltage (V_OC) of the tandem device are increased drastically, mainly due to the lower resistance of the SnO₂ layer and its higher transmittance as compared with the ZnO ETL. Moreover, it is found that the V_OC and FF losses are reduced using poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)/Ag (1 nm)/SnO₂ NCs as a recombination layer in the tandem design. After proper optimization, a tandem OSC with a V_OC of 1.61 V and an efficiency of 14.4% is achieved, which shows great operational stability as well. In addition, the current match and efficiency of the tandem device are increased up to 12.94 mA cm⁻² and 15.2%, respectively, by applying a nanotextured anti‐reflection layer on the back of the device.

中文翻译：

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通过高效的传输层和光管理方法抑制高效串联有机太阳能电池中的光伏损耗（15.2％）

就单结构和串联结构的效率而言，有机太阳能电池（OSC）都经历了飞速发展。在此，分别使用PV2000：PCBM（1.65 eV）和PM6：Y6（1.3 eV）混合物作为底部电池和顶部电池来制造两端子（2T）串联设计。研究了传输和复合层对光伏（PV）参数的作用。阻抗和透射率结果表明，使用的SnO _2个纳米晶体（NCS）作为在两个子电池的电子传输层（ETL），填充因子（FF）和开路电压（V _OC串联装置的）的显着增加，主要是由于与ZnO ETL相比，SnO ₂层的电阻较低，并且透射率较高。此外，发现在串联设计中，使用聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）/ Ag（1 nm）/ SnO ₂ NCs作为复合层可以降低V _OC和FF损失。经过适当的优化，可实现V _OC为1.61 V，效率为14.4％的串联OSC ，这也显示了出色的操作稳定性。此外，通过在设备背面施加纳米纹理的抗反射层，串联设备的电流匹配度和效率分别提高到12.94 mA cm ^-2和15.2％。