Fig. 8
From: Designs of InGaN Micro-LED Structure for Improving Quantum Efficiency at Low Current Density
a Space charge density distribution of 2QWs LED with different EBL. The inset shows the direction of polarization field. Energy band diagrams of 2QWs LED b with Al0.1Ga0.9 N EBL and c without EBL. d Carrier concentration distribution, e carrier current density, f IQE and g EL spectra of 2QWs LED with different EBL. The inset of g shows the working voltages at 0.1 and 1 A/cm2 with different EBLs