Nano Archive

Stimulated luminescence of ZnO nanocrystals of different shape grown by the method of gas transport

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

Abstract

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.

Item Type:Article
ID Code:5415
Deposited By:Prof. Alexey Ivanov
Deposited On:06 Feb 2010 11:11
Last Modified:06 Feb 2010 11:53

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