纳米银导电墨水及其成膜性能研究

Preparation of Conductive Ag Nano-ink and Study of Its Filming Performance

用化学还原法制备了纳米Ag粉,并通过X射线衍射(XRD)、激光粒度分析仪(LPSA)、透射电子显微镜(TEM)、扫描电子显微镜(SEM)等测试手段对样品进行性能表征。在所选择的实验条件下制备了类球形分布、分散性好的Ag纳米颗粒,其粒径主要分布在5～50nm范围,平均粒径为16nm,晶体结构为fcc结构。经涂布检测,Ag纳米墨水制备的墨膜均匀致密,150℃回火后,银粒子烧结明显,有微孔均匀分布。

Silver nano-particles were prepared by chemical reduction method. The product was charac- terized by x ray diffraction （XRD）, laser particle size analyzer（LPSA）, transmission electron microscopy （TEM）, and scanning electron microscopy（SEM）. The experimental results showed that the Ag nano-- particles are in high dispersion state with mostly quasi-spherical shapes, the average particle size is about 16nm with a size range between 5nm to 50nm. It was also found that the crystal structure of theAg nano powders is namely fcc structure. Spin coating and sintering revealed that as prepared nano-Ag ink can form uniform dense film; when tempered at 150℃ for lh, the powder obviously agglomerates, and with homo- geneous micro hole in it.