미디엄 필드 전기방사법을 이용한 등방성 투명 전도성 필름 제작에 대한 연구

Abstract

Transparent conductive films (TCF) based on indium-tin-oxide (ITO) have been widely used in various electronic applications such as displays and solar cells because of their excellent electrical conductivity and optical transparency. However, their low flexibility and high material cost have driven industries to seek for alternatives such as TCFs with metal meshes. Despite the high conductivity and durability of metal mesh-based TCFs, they are likely to have the unfavorable moiré effect, appearing when the periodic pattern of a metal mesh is superimposed on a color filter that has another periodic pattern of colorant pixels. In this study, we introduce an efficient fabrication method for TCFs with silver microfibers using medium field electrospinning. The random serpentine motion of the medium field electrospinning renders silver microfibers contact with adjacent silver microfibers in the lateral direction and hence eliminates the necessity of double-pass printing, resulting in the increase of manufacturing productivity. Moreover, the random network formation of silver microfibers liberates TCFs from the adverse moiré effect.