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Evidences are shown that excitons at stacking faults (SFs) in GaN nanowires (NWs) behave like 2-dimentional particles in quantum wells. The SFs were studied in samples of coalescent GaN nanowires grown on silicon substrate. They emit strong luminescence at room temperature what promises possible applications of SF for light emitting devices. At 4K, the NWs exhibit sharp near-bandgap luminescence with...
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