Using 2D XANES-XEOL spectroscopy, it is found that the band gap emission of ZnO nanowire arrays is substantially enhanced i.e. that the intensity ratio between the band gap and defect emissions increases by more than an order of magnitude when the excitation energy is scanned across the O K-edge. Possible mechanisms are discussed.
Z. Wang, X. Guo and T. Sham, Nanoscale, 2014, 6, 6531 DOI: 10.1039/C4NR01049C
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