Organic light-emitting diodes (OLEDs) offer the advantage of flexibility; however, the use of traditional transparent anode ITO limits further extension of their flexible characteristics. In this study, we propose employing an polymer polybenzodifuranedione (PBFDO) as a flexible transparent anode instead of the rigid ITO. To address the issue encountered during the PBFDO solution spin-coating process, we introduced n-butanol into the PBFDO conductive solution to reduce its viscosity and freezing point by modulating intermolecular hydrogen bonding interactions. Consequently, high-quality PBFDO films with high conductivity, superior transmittance, and low surface roughness were successfully obtained via spin-coating. Moreover, due to its proper work function, regular molecular stacking, and low refractive index properties, PBFDO electrode facilitate efficient carrier injection and transport as well as photon extraction. The resulting device utilizing a PBFDO anode combined with Super Yellow as the light-emitting layer exhibited excellent performance characteristics including a normal threshold voltage of 2.6 V and a maximum luminous efficiency of 12.8 cd A⁻¹ comparable to that device based on the ITO electrode. Furthermore, flexible device also achieved satisfactory performance (7.7 cd A⁻¹) when using the PEN substrate.

有机发光二极管（OLED）具有灵活性的优势；然而，传统透明阳极ITO的使用限制了其柔性特性的进一步扩展。在这项研究中，我们建议使用聚合物聚苯并二呋喃二酮 (PBFDO) 作为柔性透明阳极，而不是刚性 ITO。为了解决PBFDO溶液旋涂过程中遇到的问题，我们将正丁醇引入PBFDO导电溶液中，通过调节分子间氢键相互作用来降低其粘度和凝固点。因此，通过旋涂成功获得了具有高导电性、优异的透光率和低表面粗糙度的高质量PBFDO薄膜。此外，由于其适当的功函数、规则的分子堆叠和低折射率特性，PBFDO电极有利于高效的载流子注入和传输以及光子提取。所得的利用PBFDO阳极与超级黄作为发光层的器件表现出优异的性能特征，包括与基于ITO电极的器件相当的2.6V的正常阈值电压和12.8cdA ^-1的最大发光效率。此外，当使用PEN基板时，柔性器件也取得了令人满意的性能（7.7 cd A ^-1 ）。