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Flexible electronics are the promising technology for prospective application in foldable phones. Currently, indium tin oxide (ITO) has been widely used for electronic devices including flat-panel display. However, it is brittle and expensive. Metal nanowires are considered as alternative materials. Among various metal nanowires, copper nanowires are attractive because of its high electrical conductivity, better flexibility, and low cost compared with ITO. However, copper nanowires are very prone to oxidize, which causes subsequently degradation of electrical conductivity. Due to this oxidation issue, core-shell structure nanowires, which are formed silver shell having high conductivity and low resistivity on the surfaces of copper nanowires are considered to enhance oxidation resistance. The objective of the present study is to optimize the synthesis of copper nanowires to improve yields changing synthesis and increasing the dimensions of the nanowires. Copper nanowires are synthesized under various conditions, which are different concentrations of hydrazine (N2H4), ethylenediamine (EDA), sodium hydroxide (NaOH), and copper precursor, and synthesis temperatures. In addition, a new facile method using an eco-friendly organic compound A is developed to fabricate copper-silver core-shell structure (Cu-Ag) nanowires. The highest yield of copper nanowires is obtained with the length of 4 13 μm and the diameter of 250 550 nm with an amount of 15 μl of diluted N2H4. The excessive amount of diluted N2H4 leads to an unbalance in the process and causes formation

The Optimized Synthesis of Copper Nanowire for High-quality and Fabrication of Core-Shell Nanowire