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We have investigated the luminescence properties of single-crystalline wurtzite AlN nanowires by electron and photon excitation measurements, such as cathodoluminescence and photoluminescence. Band to band excitonic feature at 6.12 eV was first observed at room temperature in this study. Two typical defect band related transmissions around 3.0 eV and 4.85 eV were also observed, which are due to the...
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