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Raman probing of competitive laser heating and local recrystallization effect in ZnO nanocrystals

Ye, J. D.; Parkinson, P.; Ren, F. F.; Gu, S. L.; Jagadish, C.; Tan, Hark Hoe

Description

The competitive laser-induced local heating and recrystallization effects in ZnO nanocrystals embedded in a MgO/ZnO stack are reported via resonance Raman spectra. The dependence of the intensity, energy, and resonance effects of the longitudinal optical (LO) phonon on laser excitation condition are discussed in the context of Fröhlich interaction. Redistribution of defects, impurity-diffusion, and grain regrowth caused by thermal and photochemical effects lead to significant changes in...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
URI: http://hdl.handle.net/1885/101142
Source: Optics Express
DOI: 10.1364/OE.20.023281

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