Li Xiaopeng, Zhou Jiayue, Yan Dejun, Peng Yong, Wang Yong, Zhou Qi, Wang Kehong
College of Materials Science and Technology, Nanjing University of Science and Technology, Nanjing 210014, China.
China State Shipbuilding Corporation Huangpu Wenchong Shipbuilding Company Limited, Guangzhou 510715, China.
Materials (Basel). 2021 Apr 26;14(9):2219. doi: 10.3390/ma14092219.
In this paper, silver nanowires (AgNWs) with a diameter of 40 nm and a length of 45 μm were dispersed into an ethanol solution to prepare AgNW solutions with concentrations of 1, 2, and 3 mg/mL, respectively. The AgNW solutions were then deposited on a glass substrate using spin-coating at 1000, 2000, and 3000 rpm for 45 s, respectively, to prepare transparent electrodes. The results showed that the distribution of AgNWs on the substrate increased in density with the increase in the AgNW solution concentration and the decrease in spin speed. The effect of concentration on the distribution of AgNWs was greater than that of the spin speed. The transmittance of each electrode was between 84.19% and 88.12% at 550 nm, the average sheet resistance was between 20.09 and 358.11 Ω/sq, the highest () was 104.42, and the lowest was 1.48%. The electrode prepared at 1000 rpm with a concentration of 2 mg/mL and that prepared at 3000 rpm with a concentration of 3 mg/mL were very similar in terms of the average sheet resistance, transmittance at 550 nm, , and ; thus, these two electrodes could be considered equivalent. The of the electrode was positively correlated with the spin speed at low concentration, but that relationship became inverse as the concentration rose. For the AgNWs used in this experiment with an aspect ratio of 1125, the concentration of the AgNW solution should reach at least 2 mg/mL to ensure that the of the electrode is greater than 35.
在本文中，将直径为40nm、长度为45μm的银纳米线（AgNWs）分散到乙醇溶液中，分别制备浓度为1、2和3mg/mL的AgNW溶液。然后，分别以1000、2000和3000rpm的转速旋涂45s，将AgNW溶液沉积在玻璃基板上，以制备透明电极。结果表明，随着AgNW溶液浓度的增加和旋涂速度的降低，基板上AgNWs的分布密度增加。浓度对AgNWs分布的影响大于旋涂速度的影响。在550nm处，每个电极的透过率在84.19%至88.12%之间，平均方阻在20.09至358.11Ω/sq之间，最高 （）为104.42，最低 为1.48%。在1000rpm转速下、浓度为2mg/mL制备的电极与在3000rpm转速下、浓度为3mg/mL制备的电极在平均方阻、550nm处的透过率、 和 方面非常相似；因此，这两个电极可视为等效。在低浓度下，电极的 与旋涂速度呈正相关，但随着浓度升高，这种关系变为负相关。对于本实验中使用的长径比为1125的AgNWs，AgNW溶液的浓度应至少达到2mg/mL，以确保电极的 大于35。
