Gruzintsev, A N and Redkin, A N and Emelchenko, G A and Barthou, C and Benalloul, P (2006) Stimulated luminescence of ZnO nanocrystals of different shape grown by the method of gas transport. Journal of Optics A: Pure and Applied Optics, 8 (4). S148-S152.
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Official URL: http://stacks.iop.org/1464-4258/8/S148
The influence of the shape and size of zinc oxide nanocrystals on the threshold and directionality of lasing in the UV spectral region is investigated. Columnar-shaped nanocrystals with hexagonal faceting must have a diameter of 100-200 nm to provide sufficient optical excitation power for nanoresonators; this is comparable with the absorption length of the exciting light. A mode structure of the laser emission directed preferentially along the axis of the hexagonal prisms is observed. Different lasing mechanisms are established for nanoprisms and nanopyramids with a hexagonal base. High homogeneity in shape and size of ZnO nanocrystals, and the dependence of these parameters on the conditions of gas transport synthesis are established by electron microscope methods.
|Deposited By:||Prof. Alexey Ivanov|
|Deposited On:||06 Feb 2010 11:11|
|Last Modified:||06 Feb 2010 11:53|
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