The short‐circuit current (J_sc) of organic solar cells is defined by the interplay of exciton photogeneration in the active layer, geminate and non‐geminate recombination losses and free charge carrier extraction. The method proposed in this work allows the quantification of geminate recombination and the determination of the mobility‐lifetime product (µτ) as a single integrated parameter for charge transport and non‐geminate recombination. Furthermore, the extraction efficiency is quantified based on the obtained µτ product. Only readily available experimental methods (current‐voltage characteristics, external quantum efficiency measurements) are employed, which are coupled with an optical transfer matrix method simulation. The required optical properties of common organic photovoltaic (OPV) materials are provided in this work. The new approach is applied to three OPV systems in inverted or conventional device structures, and the results are juxtaposed against the µτ values obtained by an independent method based on the voltage–capacitance spectroscopy technique. Furthermore, it is demonstrated that the new method can accurately predict the optimal active layer thickness.

中文翻译：

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在短路条件下解开有机太阳能电池中光电过程的简单方法

有机太阳能电池的短路电流（J _sc）取决于活性层中激子光生，晶胞和非晶胞复合损失以及自由载流子提取的相互作用。在这项工作中提出的方法允许量化的geem重组和确定的迁移时间-寿命乘积（μτ）作为电荷传输和非gege重组的单个综合参数。此外，根据获得的µτ量化提取效率产品。仅采用现成的实验方法（电流-电压特性，外部量子效率测量），并将其与光学传递矩阵方法模拟相结合。这项工作提供了普通有机光伏（OPV）材料所需的光学特性。该新方法应用于倒装或常规器件结构中的三个OPV系统，其结果与基于电压-电容光谱技术的独立方法获得的µτ值并列。此外，证明了该新方法可以准确地预测最佳的有源层厚度。