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Vertically aligned N-doped ZnO microrods have been homoepitaxially grown on a high-quality ZnO template via chemical vapor transport method without employing any catalysts. In spite of the incorporation of nitrogen, the as-grown microrods exhibited excellent crystalline and optical quality, and the behavior of intrinsic point defects and impurity-related defects have been investigated in detail by...
Nitrogen-doped ZnO sample has been annealed in O 2 ambient at high temperature (1000°C) to improve its photoluminescence property. Low-temperature photoluminescence spectra of the sample are dominated by three near-band-edge emissions at 3.377, 3.362, and 3.332eV, which are ascribed to free exciton emission (FX A ), and neutral donor-bound exciton (D 0 X), and its two-electron...
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