Optimizing transparent quantum-dot LEDs on plastic substrates: enhancing performance through dielectric/metal/dielectric electrode design

Abstract This study explores the optimization of transparent quantum-dot LEDs (TQLEDs) on polyethylene naphthalate substrates, focusing on dielectric/metal/dielectric electrode structures. By employing MoO x /Ag/MoO x and WO x /Ag/WO x as the cathode and anode, respectively, we demonstrated enhanced device performance through precise control of the WO x layer thickness, significantly improving luminance and efficiency. These TQLEDs exhibit superior light emission comparable to opaque quantum-dot LEDs while ensuring transparency, which is crucial for automotive and architectural applications. Our findings highlight TQLEDs’ potential as a next-generation technology for flexible, transparent displays.