Theoretical description of the external electroluminescence around a single dislocation oriented perpendicular to the surface

Under the assumption that a dislocation decorated by impurities can be described as a macroscopic inhomogeneity the radial distribution of the flux of photons around a dislocation is calculated, where the internal absorption of the luminescence is taken into account in addition to the effect of the surface. The theoretical results are used to compute simulated images for different values of the radiative lifetime inside the dislocation region.