Cross-ordered silver nanowire film and its patterning method
A silver nanowire and patterning technology, applied in the direction of equipment, electrical components, circuits, etc. used to manufacture conductive/semiconductive layers, can solve the problems of large differences in optical properties and low resolution, and achieve improved ordering , improve accuracy, and increase the effect of fluid power
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Embodiment 1
[0045] The AgNWs stock solution was prepared according to the literature [Chen G, Bi L, Yang Z, et al. Water-based purification of ultrathin silver nanowires toward transparent conductive films with atransmittance higher than 99%. ACS Applied Materials & Interfaces, 2019, 11: 22648-22654.] The obtained silver nanowires have a diameter of 15-30 nm and a length of 20-40 μm.
[0046] (1) Use ethanol solvent to dynamically stir and clean the AgNWs stock solution. The specific operation is as follows:
[0047] Pour 60 mL of the AgNWs stock solution into a purification device with a filter membrane (8 μm pore size) and a six-hole stirring paddle, and dilute to 300 mL with absolute ethanol. The stirring speed of the six-hole stirring paddle was set at 900 rpm. During the cleaning process, slowly drop anhydrous ethanol into the purification device to maintain a constant volume of the solution for a total of 40 minutes of cleaning. After cleaning, perform positive pressure filtratio...
Embodiment 2-6
[0082] Change the coating film speed, see Table 2 for details, and the others are the same as in Example 1 to obtain the unidirectional ordered AgNWTCF, the OM photos of the obtained TCFs and the changes in the ordering degree are as follows Figure 5 shown.
[0083] Table 2
[0084] Example Coating speed Example 2 50mm·s -1
[0085] Depend on Figure 5 (a)-(h) It can be seen that as the coating speed decreases, the degree of ordering of AgNWs on TCF increases sharply at first, and then at 60mm s -1 , decreased slightly.
Embodiment 7-11
[0087] Change the concentration of the dispersion liquid in step (2), as shown in Table 3. Others are the same as in Example 1 to obtain a unidirectional ordered AgNW TCF. The OM photos of the obtained TCFs and the changes in the ordering program are as follows Figure 6 shown.
[0088] table 3
[0089]
[0090]
[0091] Such as Figure 6 As shown in (a)–(f), as the concentration of AgNWs in the dispersion increases, the density of AgNWs on the coated TCF also increases. The ordering degree of the AgNWs network first increases with the increase of the AgNWs concentration, and when the AgNWs concentration is greater than 0.4wt%, the ordering degree of the AgNWs network tends to be stable ( Figure 6 (g) and (h)).
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