The effect of the tunable thicknesses of quantum dot emitting layer in quantum-dot light-emitting diode

In this paper, the tunable thicknesses of quantum dot emitting layer were studied and QD-LEDs based on the optimum thickness of quantum dot layer were fabricated. From the experiment results, the maximum PL intensity is achieved at the spin-coating speed of 1000 r.p.m. The QD-LEDs based on the optimum thickness of quantum dot layer exhibit a low turn-on voltage of 3.1V.