| Summary: | 碩士 === 國立彰化師範大學 === 機電工程學系 === 100 === In the study, we used the polyol method to synthesize silver nanowire, and the use of silver nitrate (AgNO3) as the precursor for seeds. Unlike other studies,we not use the metal salts (PtCl2, NaCl) as the seed precursors before the synthesis of silver nanowires. The experimental results show that the different synthesis temperature, Poly(N-vinylpyrrolidone) (PVP) molecular weight, the concentration of reactants and the addition rate of silver nitrate will affect the growth characteristics of silver nanowires. SEM, UV-Vis spectra and XRD have been employed to characterize the silver nanowires.
When the synthesis temperature is higher than 180 oC, the nucleation rate is too fast. Therefore, the particles are homogeneous nucleation and the formation of silver particles. When increasing the concentration of PVP, the diameter of the silver nanowires will be widened to cause a smaller aspect ratio. This study successfully prepared silver nanowires with a diameter of 170 nm and a length
of 21 μm. Finally, the transmittance and sheet resistance were measured by UV-VIS-NIR spectrophotometer and four-point probe I-V test, respectively.The solution-type silver nanowire thin film shows high transmittance, low sheet
resistance and can be used for transparent conductive film application.
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