银纳米线宽光谱透明导电薄膜研究  

Transparent Conductive Silver Nanowire Films in Wide Spectrum

作　　者：薛凯豪 刘欢[2] 潘永强[2] 韩军[1] Xue Kaihao;Liu Huan;Pan Yongqiang;Han Jun(School of Armament Science and Technology,Xi'an Technological University,Xi'an 710021,Shaanxi,China;School of Opto-Electronic Engineering,Xi'an Technological University,Xi'an 710021,Shaanxi,China)

机构地区：[1]西安工业大学兵器科学与技术学院,陕西西安710021 [2]西安工业大学光电工程学院,陕西西安710021

出　　处：《光学学报》2022年第13期216-222,共7页Acta Optica Sinica

基　　金：陕西省重点研究开发项目(2019ZDLGY16-01)。

摘　　要：通过旋涂法制备了一系列具有不同浓度参数和方块电阻的银纳米线透明导电薄膜。通过对工艺参数的调整,所制备的薄膜在400~10500 nm波段内具有较高的光学透过率和较好的均匀性。分析了浓度参数对薄膜光电性能的影响:银纳米线浓度越大,银纳米线之间搭建的网络越密集,薄膜的有效导电路径越多,进而提高了薄膜的导电性能。当银纳米线质量浓度为1.0 mg/mL时,薄膜的方块电阻为106.1Ω/sq,在可见光和红外光谱波段具有较高的光学透过率。为降低薄膜的方块电阻,对薄膜进行了热退火处理,通过升高温度将银纳米线之间的结点进行焊接,降低了银纳米线之间的接触电阻,从而提高了薄膜的导电性。通过对薄膜的热退火处理,在薄膜光学透过率改变幅度较小的情况下,将薄膜的方块电阻从106.1Ω/sq降低至49.5Ω/sq。A series of transparent conductive silver nanowire films with different concentration parameters and sheet resistances are prepared by the spin coating method.By the adjustment of the process parameters,the prepared films have high optical transmittance and good uniformity in the optical spectrum range of 400-10,500 nm.The influence of concentration parameters on the photoelectric properties of films is analyzed.The analysis indicates that when the concentration of silver nanowires is greater,the networks built between the silver nanowires are denser,and the effective conductive paths of the films increase,which improves the conductivity of the films.When the mass concentration of silver nanowires is 1.0 mg/mL,the film has high optical transmittance in visible and infrared spectrum bands,with the sheet resistance of 106.1Ω/sq.To reduce the sheet resistance of the transparent conductive silver nanowire films,this paper performs thermal annealing treatment on the films,and the nodes between silver nanowires are welded by increasing the temperature,which reduces the contact resistance between silver nanowires and improves the conductivity of the films.Through the thermal annealing treatment of the films,the sheet resistance of the films is reduced from 106.1Ω/sq to49.5Ω/sq when the optical transmittance of the films changes slightly.

关 键 词：薄膜 银纳米线 透明导电薄膜 宽光谱 热退火 方块电阻 

分 类 号：O484[理学—固体物理]