Effect of excitation and detection angles on photoluminescence spectrum from ZnO nanorod array

The angular dependent photoluminescence from ZnO nanorod array was investigated. Variations in the excitation and detection angles provided to reveal a blue shift and then splitting of a near-band edge emission into two bands. It is suggested that the observed phenomenon is caused by an inhomogeneou...

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Bibliographic Details
Published in:Optics communications 2011, Vol.284 (1), p.240-244
Main Authors: Kurbanov, S.S., Cho, H.D., Kang, T.W.
Format: Article
Language:English
Subjects:
Arrays
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Emission
Exact sciences and technology
Excitation
Fundamental areas of phenomenology (including applications)
Ii-vi semiconductors
Nanocomposites
Nanomaterials
Nanorod
Nanostructure
Optical materials
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures
Optics
Other nonlinear optical materials
photorefractive and semiconductor materials
Photoluminescence
Physics
Zinc oxide
ZnO
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Summary:The angular dependent photoluminescence from ZnO nanorod array was investigated. Variations in the excitation and detection angles provided to reveal a blue shift and then splitting of a near-band edge emission into two bands. It is suggested that the observed phenomenon is caused by an inhomogeneous distribution of the emission along the nanorod length. The spatially resolved cathodoluminescence measurements confirmed that indeed the emission along the length of the nanorod is inhomogeneous and the top and bottom parts of the nanorod exhibit different emission spectra.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2010.09.011