Large dark spots are explained in terms of current flow in heterojunctions and surface recombination. A theory of the photoluminescence line shape is presented and verified by experiment.
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More rigorously For the samples used in this experiment, the active layer and the substrate are of the same type and have a very large conductivity‐thickness product. Consequently σt is determined almost entirely by the top layer for these samples.
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© 1977 American Institute of Physics.
1977
American Institute of Physics
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