文献类型：期刊文献

中文题名：纳米银导电墨水的制备及烧结

英文题名：Preparation and Sintering of Nano-Silver Conductive Ink

作者：黄俊皓[1];叶晓军[1];熊胜虎[1];李红波[1];袁晓[1];柳翠[1]

机构：[1]华东理工大学材料科学与工程学院

年份：2018

卷号：55

期号：7

起止页码：521

中文期刊名：微纳电子技术

外文期刊名：Micronanoelectronic Technology

收录：CSTPCD;;北大核心:【北大核心2017】；

基金：装备预研航天科技联合基金项目(6141B06310104)

语种：中文

中文关键词：喷墨打印;纳米银;导电墨水;烧结;电阻率

外文关键词：inkjet printing;nano-silver;conductive ink;sintering;resistivity

摘要：通过液相化学还原法制备了纳米银颗粒,纯化后通过X射线衍射（XRD）和能量色散谱（EDS）分析证明得到了结构完整、较为纯净的纳米银颗粒。将其制备为纳米银导电墨水,墨水的粒度分布窄、平均粒径约为25 nm、分散性好,表面张力为32.13 dyn/cm（1 dyn/cm=0.001 N/m）、黏度为4.66 mPa·s,符合喷墨打印对于墨水的要求。将墨水喷印在聚酰亚胺（PI）基材上,分别在125,150,175,200和225℃下烧结30 min,然后测量导电线路的电阻率,发现150℃下烧结电阻率为5.72×10-4Ω·cm,已满足电子电路印刷需求,随着烧结温度的提升,电阻率也不断下降,225℃下烧结,电阻率达1.53×10-5Ω·cm;同时对其烧结过程进行了分析,探究了导电线路中不导电组分的挥发及纳米银的熔融程度对电阻率的影响。
The silver nanoparticles were prepared by the liquid phase chemical reduction method.The X-ray diffraction（XRD）and energy dispersive spectroscopy（EDS）analyses prove that the structurally-complete and pure silver nanoparticles are obtained after purification.The nano-silver conductive ink prepared by the silver nanoparticles has a narrow particle size distribution with an average particle size of about 25 nm and good dispersion.Its surface tension is 32.13 dyn/cm（1 dyn/cm=0.001 N/m）and viscosity is 4.66 mPa·s.The properties of the ink meet the requirements of inkjet printing.The ink was patterned on polyimide（PI）substrate by ink-jet printing and sintered for 30 min at 125,150,175,200 and 225 ℃,respectively.Then the resistivity of the conductive circuit was measured.The resistivity is 5.72×10-4Ω·cm at the sintering temperature of 150 ℃,which meets the demand of electronic circuit printing.The resistivity constantly decreases with the increase of the sintering temperature.The resistivity reaches 1.53×10-5Ω·cm at the sintering temperature of 225℃.The sintering process was analyzed,and the effects of the volatilization of non-conductive components and the melting degree of nano silver on the resistivity in the conductive circuit were discussed.