We synthesized ultra-thin Ag nanowire (Ag NWs) with sub-15 nm diameters and aspect ratios of 1000 through a water-based high-pressure hydrothermal method in the presence of a tetrabutylammonium dichlorobromide organic salt and glucose reducing agent. In the crystal growth stage, the diameter of the NWs could be controlled by adjusting the pressure, and 15-nm diameter wires were obtained at a pressure of 190 psi. These 2D conductive Ag NW network films showed an excellent optical performance with low haze value of ≤1.0% and 94.5% transmittance at a low sheet resistance of 20 Ω/sq.

Silver nanowires (Ag NWs) with a small diameter of 20 nm and aspect ratio of 1000 were synthesized using the polyol method in the presence of a magnetic ionic liquid: 1-butyl-3-methylimidazolium tetrachloroferrate.

Long silver nanowires (Ag NWs) with lengths of ∼65 μm and aspect ratios as high as 1500 were synthesized using a tetrabutylammonium dichlorobromide (TBADCB) salt-based polyol process. The kinetics of crystal growth was studied using stepwise scanning electron microscopy, X-ray diffraction, and surface Plasmon resonance spectroscopy. The diameters of the Ag NWs were shown to be strongly dependent on the molar concentration of TBADCB/AgNO3. We further demonstrated that the length of the Ag NWs could be controlled by adjusting the reaction temperature at the nucleation step or by varying the stirring speed. NWs with lengths of up to 60 μm and diameters as large as 32 nm were obtained when unidirectional axial stirring was performed at 1000 rpm using a T-shaped impeller, and at an initial nucleation temperature of 20°C. The obtained two-dimensional conducive Ag NW network films exhibited good optical properties, with a low haze of ≤1.0% and 98% transmittance at 60 Ω/sq, similar to the properties of the films compared of 20-nm-diameter Ag NWs (aspect ratio: ∼1000).