Printed electronics has emerged as one of the key technologies for high-quality electronic products, especially for which are thin, flexible, wearable, lightweight, of varying sizes, ultra-cost-effective, andenvironmentally friendly. All these features reflect the deep involvement of engineers in the development of technology and materials for printed electronics.Silver nanomaterials has become an important alternative raw material for printed electronics.Prof. WeijieSong’s group at CNITECHhas synthesized the silver nanomaterials and presentedas silver ink. By using different printing or coating methods, silver conductive patterns, transparent conductive films and transparent film heaters have been fabricated.
Silver nanoparticles (NPs), synthesized through a simple and effective approach, could be kept in solid form without degeneration or oxidation at room temperature for a long period of time. Furthermore, AgNPs inks were prepared by simply dispersing AgNPs in different solvent. Silver inks printed on paper and plastic substrates using a common inkjet printer showed better electrical performance even after folding, which can be used as LED device circuits, RFID and EMI shielding. Further details can be foundin Applied Surface Science, 258, 7384 (2012), Nanoscale, 6, 1622 (2014),Materials Chemistry and Physics, 147, 550 (2014),Materials Letters,123, 124(2014).Three Chinese Invention Patents have been granted as well (102286226A,102827509A,102816462A).
Ag nanowires (NWs) with different aspect has been synthesized with modified polyol reduction process, and can be dispersed in water, ethanol or other organic solution with different concentrations. Furthermore, two-dimensional(2D) or three-dimensional(3D)network-like transparent and conductive AgNWs embedded PET (polyethylene terephthalate),PI(polyimide) and methylcellulose(MC)composite films were fabricated, which showed excellent mechanical flexibility. These films could be used as film heater, which have potential applications in window defogging and thermochromics. TheAgNW/MC films were expected to find new applications as wearable device.For example, AZO which hybridizes AgNW films with transparent conductive oxide results in high transparency, excellent conductivity, flexibility, and thermal stability. The results have been published on Materials Letters, 152,173 (2015),Journal of Materials Chemistry C,2, 3750(2014),ACS applied materials & interfaces, 7, 4299 (2015) and two Chinese patents have been granted(103730195A,103730194A).
Silver nanoparticles (NPs), synthesized through a simple and effective approach, could be kept in solid form without degeneration or oxidation at room temperature for a long period of time. Furthermore, AgNPs inks were prepared by simply dispersing AgNPs in different solvent. Silver inks printed on paper and plastic substrates using a common inkjet printer showed better electrical performance even after folding, which can be used as LED device circuits, RFID and EMI shielding. Further details can be foundin Applied Surface Science, 258, 7384 (2012), Nanoscale, 6, 1622 (2014),Materials Chemistry and Physics, 147, 550 (2014),Materials Letters,123, 124(2014).Three Chinese Invention Patents have been granted as well (102286226A,102827509A,102816462A).
Ag nanowires (NWs) with different aspect has been synthesized with modified polyol reduction process, and can be dispersed in water, ethanol or other organic solution with different concentrations. Furthermore, two-dimensional(2D) or three-dimensional(3D)network-like transparent and conductive AgNWs embedded PET (polyethylene terephthalate),PI(polyimide) and methylcellulose(MC)composite films were fabricated, which showed excellent mechanical flexibility. These films could be used as film heater, which have potential applications in window defogging and thermochromics. TheAgNW/MC films were expected to find new applications as wearable device.For example, AZO which hybridizes AgNW films with transparent conductive oxide results in high transparency, excellent conductivity, flexibility, and thermal stability. The results have been published on Materials Letters, 152,173 (2015),Journal of Materials Chemistry C,2, 3750(2014),ACS applied materials & interfaces, 7, 4299 (2015) and two Chinese patents have been granted(103730195A,103730194A).
Prof. Weijie Song: weijiesong@nimte.ac.cn Dr. Wei Xu: weix@nimte.ac.cn
Research Staff Url: http://english.nimte.cas.cn/rh/rd/newenergy/stfsc/stfsc_research_fields/
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