Institute of Polymer Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan.
Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan.
Macromol Rapid Commun. 2018 Jul;39(13):e1800271. doi: 10.1002/marc.201800271. Epub 2018 May 30.
Exploiting biomass has raised great interest as an alternative to the fossil resources for environmental protection. In this respect, polyethylene furanoate (PEF), one of the bio-based polyesters, thus reveals a great potential to replace the commonly used polyethylene terephthalate (PET) on account of its better mechanical, gas barrier, and thermal properties. Herein, a bio-based, flexible, conductive film is successfully developed by coupling a PEF plastic substrate with silver nanowires (Ag NWs). Besides the appealing advantage of renewable biomass, PEF also exhibits a good transparency around 90% in the visible wavelength range, and its constituent polar furan moiety is revealed to enable an intense interaction with Ag NWs to largely enhance the adhesion of Ag NWs grown above, as exemplified by the superior bending and peeling durability than the currently prevailing PET substrate. Finally, the efficiency of conductive PEF/Ag NWs film in fabricating efficient flexible organic thin-film transistor and organic photovoltaic (OPV) is demonstrated. The OPV device achieves a power conversion efficiency of 6.7%, which is superior to the device based on ITO/PEN device, manifesting the promising merit of the bio-based PEF for flexible electronic applications.
利用生物质作为替代化石资源的环保方法引起了极大的兴趣。在这方面，聚乙烯呋喃酯 (PEF) 作为一种生物基聚酯，由于其更好的机械性能、气体阻隔性能和热性能，因此具有取代常用的聚对苯二甲酸乙二醇酯 (PET) 的巨大潜力。在此，通过将 PEF 塑料基底与银纳米线 (AgNWs) 结合，成功开发出一种生物基、柔性、导电膜。除了可再生生物质的吸引力之外，PEF 在可见光波长范围内还具有约 90%的良好透明度，其组成的极性呋喃部分被证明能够与 AgNWs 发生强烈相互作用，从而大大增强了生长在其上方的 AgNWs 的附着力，例如，其弯曲和剥离耐久性优于目前流行的 PET 基底。最后，展示了导电 PEF/AgNWs 薄膜在制备高效柔性有机薄膜晶体管和有机光伏 (OPV) 中的效率。OPV 器件的功率转换效率达到 6.7%，优于基于 ITO/PEN 器件的器件，显示出生物基 PEF 在柔性电子应用中的有前途的优点。
