Kang Hongkyu, Jung Suhyun, Jeong Soyeong, Kim Geunjin, Lee Kwanghee
School of Materials Science and Engineering, Heeger Center for Advanced Materials and Research Institute for Solar and Sustainable Energies, Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea.
Nat Commun. 2015 Mar 19;6:6503. doi: 10.1038/ncomms7503.
Despite nearly two decades of research, the absence of ideal flexible and transparent electrodes has been the largest obstacle in realizing flexible and printable electronics for future technologies. Here we report the fabrication of 'polymer-metal hybrid electrodes' with high-performance properties, including a bending radius <1 mm, a visible-range transmittance>95% and a sheet resistance <10 Ω sq(-1). These features arise from a surface modification of the plastic substrates using an amine-containing nonconjugated polyelectrolyte, which provides ideal metal-nucleation sites with a surface-density on the atomic scale, in combination with the successive deposition of a facile anti-reflective coating using a conducting polymer. The hybrid electrodes are fully functional as universal electrodes for high-end flexible electronic applications, such as polymer solar cells that exhibit a high power conversion efficiency of 10% and polymer light-emitting diodes that can outperform those based on transparent conducting oxides.
尽管经过了近二十年的研究，但缺乏理想的柔性透明电极一直是实现面向未来技术的柔性可印刷电子器件的最大障碍。在此，我们报告了具有高性能的“聚合物-金属混合电极”的制备，其弯曲半径<1毫米，可见光范围内的透光率>95%，方块电阻<10Ω·sq⁻¹。这些特性源于使用含胺非共轭聚电解质对塑料基板进行表面改性，该聚电解质在原子尺度上提供具有表面密度的理想金属成核位点，并结合使用导电聚合物连续沉积易于制备的抗反射涂层。这种混合电极作为高端柔性电子应用的通用电极具有完全功能，例如具有10%高功率转换效率的聚合物太阳能电池以及性能优于基于透明导电氧化物的聚合物发光二极管。
