Journal
CHEMICAL PHYSICS LETTERS
Volume 406, Issue 4-6, Pages 457-461Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2005.03.030
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ZnO tetrapod nanowhiskers were prepared and characterized using fractal dimension analysis. The fractal dimension of well-developed ZnO nanowhiskers was higher than 1.7, while that of ZnO nanoparticles was lower than 1.6. In addition to UV band-edge emission, nanowhiskers of large fractal dimension having well-developed ZnO crystalline feet and a Zn phase at the tetrapod center exhibited two visible emissions at wavelengths of 419 and 438 nm at room temperature. (c) 2005 Elsevier B.V. All rights reserved.
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