천연 유기물 Shellac을 절연체로 이용한 유기 TFT 제작에 관한 연구

Abstract

So far, organic electronics technology has been developed focusing on low-cost, solution-processed, and mechanically flexible characteristics. According to the very recent reports, these merits allow the organic electronics to expand their applications to biomedical devices that can be stuck onto (or even implanted in) a human body. However, additional material properties such as bio-compatibility or bio-degradability must be considered in order to be used for fabrication of the organic bioelectronic devices. Shellac, a natural resin secreted by the female lac bug on trees, is regarded as a promising material for organic bioelectronic devices due to its safety and innocuousness for human body. Indeed, shellac has been widely used as a brush-on colorant such as nail paint, wood finish for string instruments and food glaze. In addition, it was also used in electrical applications because it has good electrical insulating property and seals out moisture. In this paper, we studied on the feasibility of the shellac as a gate dielectric material in organic field-effect transistors (OFETs), critical switching components in organic biomedical electronics.