Organic semiconductors are of great interest for a broad range of optoelectronic applications due to their solution processability, chemical tunability, highly scalable fabrication, and mechanical flexibility. In contrast to traditional inorganic semiconductors, organic semiconductors are intrinsically disordered systems and therefore exhibit much lower charge carrier mobilities—the Achilles heel of organic photovoltaic cells. In this progress review, the authors discuss recent important developments on the impact of charge carrier mobility on the charge transfer state dissociation, and the interplay of free charge extraction and recombination. By comparing the mobilities on different timescales obtained by different techniques, the authors highlight the dispersive nature of these materials and how this reflects on the key processes defining the efficiency of organic photovoltaics.

中文翻译：

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流动性对基于聚合物的太阳能电池中电荷产生，复合和提取的作用

有机半导体由于其溶液的可加工性，化学可调性，高度可扩展的制造和机械柔韧性，因此在广泛的光电应用中引起了极大的兴趣。与传统的无机半导体相反，有机半导体本质上是无序的系统，因此表现出低得多的电荷载流子迁移率-有机光伏电池的致命弱点。在本进展综述中，作者讨论了电荷载流子迁移率对电荷转移状态解离以及自由电荷提取和重组相互作用的影响的最新重要进展。通过比较通过不同技术获得的在不同时间尺度上的迁移率，