Highly Easy and Low Cost Fabrication of Graphite-based Flexible Transparent Conducting Film

We demonstrated extraordinary easy and low-cost fabrication of flexible transparent conducting film (TCF) using graphite powder as conducting material. The method is ignoring heating and transfer process which is commonly used in the fabrication of transparent conducting film. Graphite powder is directly and manually deposited onto the transparent plastic by using tube-shaped metal which its round surface was covered with tissue of 2 mm thick. The deposition of graphite powder was performed by circle motion of 20 movements for one coating or one layer. Numerous layers of graphite film were coated on the previous stacked layer to increase TCFs conductivity. Resistivity and transmittance measurement of TCF was performed by four-point probe method and UV-Vis equipment respectively. It is confirmed that graphite TCF achieved the resistivity of 0.98 ohm.cm and transmittance of 60% for one time of coating, while 40 times of coating resulted in the resistivity of 0.17 Ohm.cm and transmittance of 4.6%. Although its transmittance still has a space to be improved higher, our method is very promising for future up scalable production of transparent conducting film owing to its highly easy process and effective cost..