Abstract
Wurtzite ZnO nanowall structures have been synthesized on a (110) Al2O3 substrate by a thermal evaporation and condensation method. The nanowalls are connected to each other and have a thickness of about 20–100 nm. An excellent epitaxial relationship with the substrate has been observed by X-ray diffraction. Edge-dislocation dipoles were observed by transmission electron microscopy. Photoluminescence measurements show strong UV emission at 390 nm for the white-gray nanowalls grown at high temperature, and very weak UV emission for the reddish nanowalls grown at low temperature.
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78.55.-m; 81.05.Je; 81.10.Bk; 81.15.Ef
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Lao, J., Huang, J., Wang, D. et al. ZnO nanowalls. Appl Phys A 78, 539–542 (2004). https://doi.org/10.1007/s00339-003-2391-2
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DOI: https://doi.org/10.1007/s00339-003-2391-2