Surface-Assisted Luminescence: The PL Yellow Band and the EL of n-GaN Devices
Figure 2
Diagram linking photoconductance signal (log axis) to photon energy for Device no. 1, whose band diagrams are shown in Figure 1. The PC signal at point A is due to electrons emitted from SE close to the quasi-Fermi level , while the PC signal at point B accumulates the emissions of electrons trapped at SEs covering a band between and 2 eV below the CB (see the text).