Adhesive Cu-Ag core-shell nanowires on polymer-coated glass substrates for fabricating transparent conductive films with durability against spin coating
Adhesive Cu-Ag core-shell nanowires on polymer-coated glass substrates for fabricating transparent conductive films with durability against spin coating
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DOI：
10.1016/j.colsurfa.2022.130804
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发表时间：
2022-12-28
影响因子：
5.2
通讯作者：
Takahashi, Hideyuki
中科院分区：
文献类型：
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作者：
Koga, Hiromi;Yokoyama, Shun;Takahashi, Hideyuki
采用真空过滤转移法（VFT）在涂覆聚合物薄膜的玻璃基板上制备了Cu-Ag核壳纳米线（Cu@Ag NW）薄膜作为透明导电膜。即使选择了聚乙烯吡咯烷酮（PVP） K120聚合物作为最佳粘结剂，使NWs与基底之间的结合更加牢固，但由于NWs与基底之间的接触面积不足，在溶液的自旋涂层下，从VFT中获得的NWs也很容易从基底上脱落。因此，在乙醇在NW膜上滴下和蒸发过程中产生的毛细管浸没力的作用下，NWs被压在基底上。这种方法使得NWs与聚合物表面之间有足够的接触面积，因此NWs在自旋涂覆后可以牢固地粘附在衬底上并保持其作为tcf的性能。NW薄膜具有良好的粘附性和耐用性（透过率和片电阻值分别为89.4%和61.3 & ω;/sq），是采用自旋镀膜技术制备各种光电器件的理想tfs。
Cu-Ag core-shell nanowire (Cu@Ag NW) films were fabricated using vacuum filtration and transfer method (VFT) on glass substrates coated with polymer thin films, as transparent conductive films (TCFs). Even when the polyvinylpyrrolidone (PVP) K120 polymer as the optimal binder, which allowed strong bonding between the NWs and the substrates, was selected, the NWs obtained from the VFT are peeled off easily from the substrate under spin coating of solutions due to insufficient contact area between NWs and substrates. Thus, the NWs were pressed against the substrates in the presence of capillary immersion force, which was generated during the processes of ethanol dropping and evaporation on the NW films. This approach resulted in a sufficient contact area between the NWs and the polymer surfaces, and consequently the NWs strongly adhered to substrates and maintained their performances as TCFs after spin coating. The adhesive and durable NW films with good performances (transmittance and sheet resistance values of 89.4% and 61.3 & omega;/sq) are suitable TCFs for the fabrication of various optoelectronic devices by spin coating.