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Influence of Post-Processing Methods on the Conductive Properties of Nano-Silver Conductive Ink
Abstract:
The article prepares the jet ink with nano-silver synthesized by the lab and then adjusts the parameters of the silver colloid to fabricate nano-silver conductive ink suitable for ink-jet. Then patterns are obtained on the photo paper through EPSON ME 70 jet printing, and treated by three post-processing methods include laser sintering, heating, and solution soaking, which measured by four- point probe measurement and observed by SEM. It shows that after treatment the surface resistance of the patterns all decrease obviously. Patterns heated at 120°C for 10min, the resistance is 815mΩ/□, while the surface changes of silver layers can be observed obviously from SEM images. But the surface of the photo paper is destroyed with some bubbles on the coating surface. After 10min of laser sintering, the resistance of the silver layer reaches 890mΩ/□ from infinity. And when immersed in the NaCl solution for 5min, the patterns’ surface resistance decrease to 2.7Ω/□.
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115-118
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July 2012
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© 2012 Trans Tech Publications Ltd. All Rights Reserved
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