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Integrated CL spectra at . The Cd concentrations and peak positions are summarized in the inset.
CL wavelength images (CLWIs) (left column) and matching histograms (right column) for all four samples.
SE image (a) and matching panchromatic CL intensity image (CLI) (b) for the sample showing the microscopic correlation of surface morphology (SE image) and integral CL intensity: at hillocks: high luminescence intensity, at boundaries and craters: weak or zero quantum efficiency. Normalized monochromatic CLIs [(c) and (d)]: the energy intervals match with the two emission lines of the integral spectrum (Fig. 1). The white rectangular marker exemplarily visualizes the perfectly correlated complementary local CL intensity contrast. In addition the positions of the local spectra (e) and (f) are indicated in the CLIs and the spectral range of both CLIs is highlighted in grey for illustration in the local spectra.
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