Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Phosphorene-AsP Heterostructure as a Potential Excitonic Solar Cell
  Material - A First Principles Study   Solar energy conversion to produce electricity using photovoltaics is an
emerging area in alternative energy research. Herein, we report on the basis of
density functional calculations, phosphorene/AsP heterostructure could be a
promising material for excitonic solar cells (XSCs). Our HSE06 functional
calculations show that the band gap of both phosphorene and AsP fall exactly
into the optimum value range according to XSCs requirement. The calculated
effective mass of electrons and holes show anisotropic in nature with effective
masses along ${\Gamma}$-X direction is lower than the ${\Gamma}$-Y direction
and hence the charge transport will be faster along ${\Gamma}$-X direction. The
wide energy range of light absorption confirms the potential use of these
materials for solar cell applications. Interestingly, phosphorene and AsP
monolayer forms a type-II band alignment which will enhance the separation of
photogenerated charge carriers and hence the recombination rate will be lower
which can further improve its photo-conversion efficiency if one use it in
XSCs.

8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
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The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
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The categories of this paper are: eess