Abstract
Transparent heaters have attracted increasing attention for their usefulness in vehicle windows, outdoor displays, and periscopes. We present high performance transparent heaters based on Ag nanowires with electron beam irradiation. We obtained an Ag-nanowire thin film with 48 ohm/sq of sheet resistance and 88.8% (substrate included) transmittance at 550 nm after electron beam irradiation for 120 sec. We demonstrate that the electron beam creates nano-soldering at the junctions of the Ag nanowires, which produces lower sheet resistance and improved adhesion of the Ag nanowires. We fabricated a transparent heater with Ag nanowires after electron beam irradiation, and obtained a temperature of 51 °C within 1 min at an applied voltage of 7 V. The presented technique will be useful in a wide range of applications for transparent heaters.
Highlights
Transparent heaters have attracted increasing attention for their usefulness in vehicle windows, outdoor displays, and periscopes
Indium tin oxide (ITO) film has been widely used as a transparent film heater in the industry[1]
The transmittance of the AgNW/Corning glass system generally decreased from 91.1% to 88.8% after electron beam irradiation for 180 sec
Summary
Transparent heaters have attracted increasing attention for their usefulness in vehicle windows, outdoor displays, and periscopes. We present high performance transparent heaters based on Ag nanowires with electron beam irradiation. Silver nanowires (AgNWs) have recently attracted substantial interest as a transparent conducting material due to their transparency, low resistivity, and non-vacuum processes[12,13,14,15,16]. That paper indicated that the illumination must exceed a temperature of 150 °C, and that temperature is not acceptable for flexible substrates To overcome these problems, we investigated the electrical, optical and structural properties of AgNWs by electron beam irradiation with low temperature. The results demonstrated that electron beam irradiation significantly reduces the sheet resistance of AgNWs, which in turn enhances the heat generation behavior for transparent heater applications
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