Resistance reduction in laser-thermally transferred carbon nanotube wirings on plastic films via CuI doping

We present a straightforward method to dramatically reduce the resistance of multi-walled carbon nanotube (MWNT) wirings on polyethylene (PE) films. By introducing CuI doping during laser thermal transfer, we achieved a resistance as low as 166 Ω cm⁻¹—an 80% reduction compared to non-doped samples—without altering the wiring geometry. This scalable approach enhances conductivity and allows precise resistivity control. With its simplicity, efficiency, and adaptability, this method addresses key challenges in flexible electronics, paving the way for lightweight, high-performance carbon-based devices in advanced applications.