|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||2016 Technical Division Student Poster Competition
||SPG-41: Printing of Graphene-coated Copper Nano-ink on Flexible Substrate Using Light Sintering Method
||YeonHo Son, Min Kyu Kang, Young Jun Pyo, Eric H Yoon, Seung-Boo Jung, Yongil Kim, Caroline Sunyong Lee
|On-Site Speaker (Planned)
Flexible substrate is widely used for various electronic devices. Since flexible substrate cannot withstand high temperature, light sintering system can be used for sintering flexible substrate. CNPs (Copper nano particles) with its size of 100 nm in diameter, were synthesized using polyol method, followed by dry 1-Octanethiol coating for oxidation prevention. Moreover, CVD method was used to convert PVP coated on the copper surface into graphene at 875 ℃. Nano-inks were fabricated by dispersing CNPs in 1-Octanol solvents. TEM image confirmed the coating of 1.2 nm-thick graphene coating and 10 nm-thick 1-Octanethiol coating. Raman spectra confirmed the conversion of PVP coating into graphene. The oxidation of Cu pattern was prevented for more than 240 days. After light sintering at 1400V, 9ms for 1 cycles, the resistivity was measured to be 1.89 x 10-7 Ω•m. Therefore, light sintering was shown to be the promising method for patterning on flexible substrate.
||Definite: None Selected