Making Large-Size Flexible Transparent Conducting Thin Film Of Carbon Materials By Rod-Coating Technique And The Application In Alternating Current Electroluminescence Devices

Recently, with the increasing demand for flexible and robust optoelectronic devices (plastic electronics), highly flexible, transparent, and conducting thin films have attracted significant attention. Carbon materials such as carbon nanotube and graphene, are the potential materials to be used as flexible transparent electrode due to unique conductivity, excellent chemical and thermal stability and good flexibility. The rod-coating is the only technique that is a scalable way for roll-to-roll production in industry, which can make large-size films. Meanwhile, the alternating current electroluminescent devices are also attacked great attention owing to the simple structures. Therefore, this work combined three advantages above, will exhibits real application in research.Herein, there are four steps to finish the work. First, the stable suspensions are obtained by the selection and dispersion of materials. Second, according to the solution process, large-size conducting thin film is gotten on the plastic substrate based on carbon materials. Third, the large-scale alternating current electroluminescent devices are fabricated by the rod-coating technique with the phosphor, dielectric and rear electrode. Last, the properties of devices are measured by the alternating current power.In a word, the suspensions are high stability, concentration, low toxic; and the films own unique conductivity, transparent, flexibility, large-size, low cost, and simple; and there are good flexibility, large-size, long lifetime and simple structures to the devices. In addition, the device based on double functions of graphene oxide have been designed, which correspondence suggests the possibility of alternating current electroluminescent devices built with reduced graphene oxide electrode and graphene oxide dielectric layer.