Transparent electromagnetic interference (EMI) shielding materials with high optical transmittance and outstanding shielding effectiveness (SE) for optoelectronic devices in visual windows are urgently needed. Herein, we demonstrate the preparation of a transparent EMI shielding film based on silver nanowires (Ag NWs) via a facile Mayer-rod coating method. The electrical conductivity and transmittance of Ag NW-based films can be greatly improved through treatment with NaBH₄ and the lamination of poly(diallyldimethyl-ammonium chloride). The coverage of the polymer decreases the surface roughness, with no damage on the uniform mesh of the Ag NWs. The Ag NW/PDDA composite films present a sheet resistance of 22 Ω sq⁻¹ at a transmittance of 95.5%, better than that of commercial indium tin oxide (ITO). The excellent optoelectrical performance of the Ag NW/PDDA composite film is further ascertained by fitting the transmittance with the resistance, with a figure of merit of 443. The Ag NW/PDDA composite films in this study exhibit greatly improved stability during 25 °C/65% RH aging for 35 days with the assistance of the coverage layer. Moreover, the EMI SE of the Ag NW/PDDA composite films is 28 dB on average at a transmittance of 91.3%, and continuously increases to 31.3 dB while the optical transmittance is still maintained at 86.8%, which is superior to those of most reported transparent EMI shielding materials. Taken together, the excellent optical transmittance and EMI shielding performance of the Ag NW/PDDA composite film make it an outstanding transparent EMI shielding material in optoelectronic devices, such as aerospace equipment, medical devices, communication facilities, and electronic displays.

中文翻译：

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基于银纳米线的高效稳定的透明电磁干扰屏蔽膜。

迫切需要透明的电磁干扰（EMI）屏蔽材料，该材料具有高透光率，并且对于可视窗口中的光电设备具有出色的屏蔽效果（SE）。在这里，我们演示了通过一种简便的Mayer-rod涂覆方法制备基于银纳米线（Ag NWs）的透明EMI屏蔽膜。通过用NaBH ₄处理和层压聚二烯丙基二甲基氯化铵，可以大大提高Ag NW基薄膜的电导率和透射率。聚合物的覆盖范围降低了表面粗糙度，而不会损害Ag NWs的均匀网格。Ag NW / PDDA复合膜的薄层电阻为22Ωsq ^-1透射率为95.5％，优于商业铟锡氧化物（ITO）。通过将透射率与电阻进行拟合，可以进一步确定Ag NW / PDDA复合膜的优异光电性能，其品质因数为443。本研究中的Ag NW / PDDA复合膜在25°C /在覆盖层的帮助下，65％RH老化35天。此外，Ag NW / PDDA复合膜的EMI SE平均为28 dB，透射率为91.3％，并连续增加至31.3 dB，而光学透射率仍保持在86.8％，优于大多数报道的透明的EMI屏蔽材料。在一起