基于多成核机制的银纳米线制备研究

Synthesis of Silver Nanowires by Mixing Different Nucleating Control Agents

银纳米线具有合成工艺简单及光电、力学性能优异等优点,是ITO(氧化铟锡)的理想替代材料之一。提高银纳米线的长径比是提升其光电性能的关键。本实验采用多元醇法制备了银纳米线,重点探索了多种成核控制剂对产物银纳米线形貌的影响。结果表明,在同时使用NaCl与FeCl3时,能制备出平均直径为87nm、平均长度为59μm、长径比为678的银纳米线。使用提纯后产物在玻璃上制备透过率为90.88%、方阻为27.4Ω/sq的透明电极,具有较高的应用价值。

With the advantages of simple synthesis processes and excellent optoelectronic,mechanical properties,silver nanowires become one of the ideal alternative material for ITO. Increasing the aspect ratio of silver nanowires is the key to improve its photoelectric performance. In this paper,silver nanowires were prepared by polyol method,and the effects of various nucleating control agents on the morphology of silver nanowires were investigated. The results show that silver nanowires with average diameter of 87 nm,average length of 59 μm and aspect ratio of 678 were prepared at high yield when both NaCl and FeCl3 were used. Using the purified product,a transparent electrode having a transmittance of 90.88% and a sheet resistance of 27.4 Ω/sq was prepared on the glass,showing a high application value.