Effect of the Charges Injection Contact on the Performance of Organic Light Emitting Diode (OLED)

Our simulations consists of studying the organic light emitting diode (OLED) formed by Hole Injection Layer (HIL) /Electron Transport Layer (ETL). We have represented the J-L-V characteristic; the distribution of the electric filed across the device, and investigated the effect of the charge carrier injection contact on the performance of the OLED. The simulation results shows that the charge injection depends strongly on the height barrier contact, we have an improvement of 91.15% in the charge carrier was achieved from a height barrier $\leq$0.2eV, and therefore decrease the turn-on voltage by 70%, and the reduction in the height barrier contact results an increase in the formation of the Langevin recombination rate the emission of photon.