High-performance transparent heater with Ag paste-based nanomesh electrodes

Transparent heaters have attracted significant attention in recent years because of their wide range of potential applications, including defogging and defrosting windshields, thermochromic smart windows, and wearable heating devices. This paper presents a comparison of the performances of a transparent heater with nanomesh electrodes and that with micromesh electrodes. Both transparent heaters exhibit excellent basic characteristics, with an optical transmittance of more than 90%, and sheet resistance of less than 2 Ω/□. From the thermal response time tests, we observed a shorter thermal response time of 30 s for the nanomesh heater. This is because the heater must warm the transparent area; hence, the smaller transparent area of the nanomesh is more advantageous for a transparent heater. Furthermore, the nanomesh transparent heater exhibited excellent heating stability and performance at various sizes. The promising results of this study can facilitate significant and practical applications of transparent heaters, such as windshields for vehicles.