Quantum model for carrier capture time through phonon emission in InGaN/GaN LEDs

A quantum model is developed to obtain electron capture time in a quantum well through electron-longitudinal optic phonon emission, as function of carrier density, showing the interplay between phonon and collective plasma modes. We demonstrate that the usual approximation of a constant capture time in modeling of light-emitting diodes is not adequate, because this parameter varies considerably with the device working point.