Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Theory of photo-injection of hot plasmonic carriers in
  metal-semiconductor nanostructures   We investigate theoretically the effect of injection of plasmonic carriers
from an optically-excited metal nanocrystal to a semiconductor contact or to
attached molecules. The distributions of optically-excited hot carriers are
dramatically different in metal nanocrystals with large and small sizes. In
large nanocrystals, most carriers have very small energies and the hot carrier
distribution resembles the case of a plasmon wave in bulk. In nanocrystals
smaller than 20nm, the carrier distribution extends to larger energies and
occupies the whole region E_{F}<E<omega. The physical reason for the above
behaviors is non-conservation of momentum in a nanocrystal. Because of the
above properties, nanocrystals of small sizes are most suitable for designing
of opto-electronic and photosynthetic devices based on injection of plasmonic
electrons and holes. The central parameter of the problem is
DeltaN=omega/q_{L}*v_{F}, where q_{L} is the momentum transfer and v_{F} is the
Fermi velocity. In gold nanocrystals, when DeltaN<7, the high-energy
hot-electron generation is efficient. For larger parameters DeltaN, the number
of high-energy electrons is greatly reduced. Another important factor is the
polarization of the exciting light. For efficient excitation of carriers with
high energies, the electric-field polarization vector should be perpendicular
to a prism-like nanoantenna (slab or platelet) with a small width ~ 10-20 nm.
We also show the relation between our theory for injection in plasmonic
nanocrystals and the Fowler theory of injection from a bulk metal. Along with a
prism geometry (or platelet geometry), we consider cubes. The results can be
applied to design both purely solid-state opto-electronic devices and systems
for photo-catalysis and solar conversion.

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The categories of this paper are: q-alg
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The categories of this paper are: alg-geom
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
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The categories of this paper are: chao-dyn
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The categories of this paper are: eess
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The categories of this paper are: hep-th
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The categories of this paper are: mtrl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: atom-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
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The categories of this paper are: supr-con
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The categories of this paper are: hep-lat
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The categories of this paper are: ao-sci
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The categories of this paper are: stat