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Mater Sci Nanotechnol 2017 | Volume 1 Issue 2
allied
academies
Nanomaterials and Nanochemistry
November 29-30, 2017 | Atlanta, USA
International Conference on
S
urface plasmons (SPs), excited by the interaction between
light and metal surfaces have attracted great scientific
interest due to their ability to enhance light emission from
solid-state materials. Among metals used in surface plasmon
coupled luminescence, Al gains increasing attention owing
to its advantageous plasmonic properties in the UV region
related to a small imaginary part of its relative permittivity
at the UV wavelength range, low cost and abundance. In
this talk, plasmonic properties of regular arrays of Al nano-
concaves with various pitch size prepared by anodization
of Al, will be presented. As a proof of concept, the
enhancement of UV emission from ZnO thin films deposited
on the Al nano-concave arrays and the modulation of the
enhancement factor by the distance between the Al nano-
concave centers will be shown. Zinc oxide (ZnO), with a wide
direct band gap (3.37 eV) and a large exciton binding energy
(60 meV), has been considered as a promising candidate for
efficient ultraviolet (UV) light-emitting devices (LEDs) and low
threshold UV lasers. For photonic applications of ZnO it is of
outmost importance to obtain highly efficient UV emission
from the near band edge (NBE). Plasmonic enhancement of
the UV emission by Al nanostructures is a promising way to
achieve this goal.
e:
malgorzata.norek@wat.edu.plPlasmonic properties of Al nano-concave arrays
Małgorzata Norek
Military University of Technology, Poland