Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Enhancement of Photovoltaic Current Generation through Dark States in
  Donor-Acceptor Pairs of Tungsten-based Transition Metal Di-Chalcogenides
  (TMDCs)   As several photovoltaic materials experimentally approach the
Shockley-Queisser limit, there has been a growing interest in unconventional
materials and approaches with the potential to cross this efficiency barrier.
One such candidate is dark state protection induced by the dipole-dipole
interaction between molecular excited states. This phenomenon has been shown to
significantly reduce carrier recombination rate and enhance photon-to-current
conversion, in elementary models consisting of few interacting chromophore
centers. Atomically thin 2D transition metal di-chalcogenides (TMDCs) have
shown great potential for use as ultra-thin photovoltaic materials in solar
cells due to their favorable photon absorption and electronic transport
properties. TMDC alloys exhibit tunable direct bandgaps and significant dipole
moments. In this work, we introduce the dark state protection mechanism to a
TMDC based photovoltaic system with pure tungsten diselenide (WSe2) as the
acceptor material and the TMDC alloy tungsten sulfo-selenide (WSeS) as the
donor material. Our numerical model demonstrates the first application of the
dark state protection mechanism to a photovoltaic material with a photon
current enhancement of up to 35% and an ideal photon-to-current efficiency
exceeding the Shockley-Queisser limit.

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The categories of this paper are: funct-an
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The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
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The categories of this paper are: ao-sci
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The categories of this paper are: adap-org
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The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
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The categories of this paper are: solv-int
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-lat
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
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The categories of this paper are: plasm-ph