A key feature of organic electronic devices is their mechanical flexibility. However, the performance of flexible organic optoelectronic devices still lags behind the performance of devices on rigid substrates. This is due, in particular, to the lack of flexible transparent electrodes that simultaneously offer low resistance, high transparency and a smooth surface. Here, we report flexible transparent electrodes created using water-processed silver nanowires and a polyelectrolyte. Due to ionic electrostatic charge repulsion, the nanowires form grid-like structures in a single step, leading to smooth, flexible electrodes that have a sheet resistance of around 10 Ω □⁻¹ and a transmittance of around 92% (excluding the substrate). To illustrate the potential of the approach in organic electronics, we use the flexible electrodes to create organic photovoltaic devices. The devices are tested with different types of donors and acceptors, and exhibit performance comparable to devices based on commercial rigid electrodes. Furthermore, flexible single-junction and tandem devices achieve power conversion efficiencies of 13.1% and 16.5%, respectively.

有机电子设备的关键特征是其机械灵活性。但是，柔性有机光电器件的性能仍然落后于刚性基板上的器件的性能。这尤其是由于缺乏同时提供低电阻，高透明度和光滑表面的柔性透明电极。在这里，我们报告使用水处理的银纳米线和聚电解质制成的柔性透明电极。由于离子静电电荷的排斥，纳米线可在一个步骤中形成网格状结构，从而形成光滑，柔软的电极，其薄层电阻约为10Ω□ ^-1透射率约为92％（不包括基板）。为了说明该方法在有机电子学中的潜力，我们使用柔性电极创建有机光伏器件。该设备使用不同类型的供体和受体进行测试，其性能可与基于商用刚性电极的设备相媲美。此外，灵活的单结和串联器件分别实现了13.1％和16.5％的功率转换效率。