Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unravelling a Zigzag Pathway for Hot-Carrier Collection at
  CH3NH3PbI3/Graphene Interfaces   The capture of photoexcited deep-band hot carriers, excited by photons with
energies far above the bandgap, is of significant importance for photovoltaic
and photoelectronic applications since it is directly related to the quantum
efficiency of photon-to-electron conversion. By employing time-resolved
photoluminescence and state-of-the-art time-domain density functional theory,
we reveal that photoexcited hot carriers in organic-inorganic hybrid
perovskites prefer a zigzag interfacial charge-transfer pathway, i.e., the hot
carriers transfer back and forth between CH3NH3PbI3 and graphene, before they
reach a charge separated state. Driven by quantum coherence and interlayer
vibrational modes, this pathway at the semiconductor-graphene interface takes
about 400 femtoseconds, much faster than the relaxation process within
CH3NH3PbI3 (in several picoseconds). We further demonstrate that the transfer
rate of the pathway can be further enhanced by interfacial defects. Our work
provides a new insight for the fundamental understanding and precise
manipulation of hot-carrier dynamics at the complex semiconductor-graphene
interfaces, paving the way for highly efficient photovoltaic and photoelectric
device optimization.

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The categories of this paper are: math-ph
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
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The categories of this paper are: q-fin
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The categories of this paper are: hep-ex
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The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat