Resistivity Anisotropy in Transparent Conductive Films Containing Silver Nanowires

Resistivity Anisotropy in Transparent Conductive Films Containing Silver Nanowires

William Devine /Jason Payne
Carestream Health, Inc

Transparent conductive films for touch screen applications using silver nanowire electrodes have been widely researched over the past few years. Silver nanowires are considered especially promising as transparent conductive film electrodes by virtue of silver having the highest conductivity of any metal as well as attractive optical properties. One drawback, however, of silver nanowire films produced in a coating process can be anisotropic conductivity (or resistivity) between the machine and transverse directions. This anisotropy can create inefficiencies in the touch screen module fabrication process. We will present experimental data showing the influence of key solution delivery, coating, and drying parameters on resistivity anisotropy and offer insights on causal mechanisms.