Composition for forming copper nanowire network by light sintering method for preparing copper nanowire network and transparent electrode including the same

摘要

The present invention relates to a composition for forming a copper nanowire network by light sintering, a method for preparing the copper nanowire network and a transparent electrode including the copper nanowire network, and more specifically, to a composition for forming a copper nanowire network by light sintering which comprises a copper precursor, a binder and a reducing agent, a method for preparing the copper nanowire network using the composition for forming the copper nanowire network by light sintering, and a transparent electrode including the copper nanowire network. According to the present invention, a copper nanowire-based transparent electrode which is capable of replacing an existing expensive ITO transparent electrode is capable of being cost effectively mass-produced. Particularly, the present invention is capable of producing a copper nanowire having stable characteristics by solving oxidation problems, and is capable of performing a reduction process and a sintering process for a very short sintering time within several milliseconds (msec) at room temperature and ambient conditions. Further, a transparent electrode including a copper nanowire network according to the present invention is suitable for realizing a flexible transparent electrode by enabling the transparent electrode including the copper nanowire network to be applied to polymer substrates such as PET and others as well as a glass substrate since the transparent electrode including the copper nanowire network enables welding between wires through sintering to a large area even at room temperature and ambient conditions by replacing an existing high temperature sintering process which has been performed at a high temperature of 300 C or higher. Additionally, a transparent electrode including a copper nanowire network according to the present invention is capable of obtaining a high specific resistance value and a transparency which enable the transparent electrode to be industrially commercialized.