The nature of the polarization-field in disorder induced nanoscale potential fluctuations
(radiative traps) within (In, Ga) N based quantum-well (QW) heterostructures remains
ambiguous. Spectrally resolved photoluminescence microscopy has been utilized to probe
the local polarization field by monitoring the extent of quantum-confined Stark effect (QCSE)
in radiative trap centers spontaneously formed within an (In, Ga) N QW based light emitting
diode. Interestingly, two distinct categories of nanoscale radiative domains, which arise from …