Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Broadband absorption enhancement in ultra-thin crystalline Si solar
  cells by incorporating metallic and dielectric nanostructures in the back
  reflector   We propose a back-reflecting scheme in order to enhance the maximum
achievable current in one micron thick crystalline silicon solar cells. We
perform 3-dimensional numerical investigations of the scattering properties of
metallic nanostructures located at the back side, and optimize them for
enhancing absorption in the silicon layer. We validate our numerical results
experimentally and also compare the absorption enhancement in the solar cell
structure, both with quasi-periodic and random metallic nanostructures. We have
looked at the interplay between the metallic nanostructures and an integrated
back-reflector. We show that the combination of metallic nanoparticles and a
metallic reflector results in significant parasitic absorption. We compared
this to another implementation based on titanium dioxide nanoparticles which
act as a lambertian reflector of light. Our simulation and experimental results
show that this proposed configuration results in reduced absorption losses and
in broadband enhancement of absorption for ultra-thin solar cells, paving the
way to an optimal back reflector for thin film photovoltaics.

17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex