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标题:Enhanced surface-excitonic emission in ZnO/Al(2)O(3) core-shell nanowires.
时间:2020-03-26 11:42:37
DOI:10.1088/0957-4484/19/30/305202
PMID:21828756
作者:J-P Richters;T Voss;D S Kim
关键词:fluorochromes;inflammation;liposomes;molecular imaging;optical imaging
出版源: 《Nanotechnology》 ,2008 ,19 (30) :305202
摘要:We report the influence of an Al(2)O(3) shell on the photoluminescence emission of ZnO nanowires. At room temperature, the spectrum of the core-shell nanowires shows a strong reduction of the relative intensity of the green defect emission with respect to the near-band-edge emission. At 5K an increase of the relative intensity of the surface exciton band with respect to the donor-bound exciton emission is observed. Annealing the core-shell nanowires at 500 °C does not increase the green defect luminescence at 5K. We propose a model explaining the spectral changes.
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目录:
  • Acknowledgments
  • References

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