Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: NIR Schottky Photodetectors Based on Individual Single-Crystalline GeSe
  Nanosheet   We have synthesized high-quality, micrometer-sized, single-crystal GeSe
nanosheets using vapor transport and deposition techniques. Photoresponse is
investigated based on mechanically exfoliated GeSe nanosheet combined with Au
contacts under a global laser irradiation scheme. The nonlinearship,
asymmetric, and unsaturated characteristics of the I-V curves reveal that two
uneven back-to-back Schottky contacts are formed. First-principles calculations
indicate that the occurrence of defects-induced in-gap defective states, which
are responsible for the slow decay of the current in the OFF state and for the
weak light intensity dependence of photocurrent. The Schottky photodetector
exhibits a marked photoresponse to NIR light illumination at a wavelength of
808 nm. The significant photoresponse and good responsitivity suggests its
potential applications as photodetectors.

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The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
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The categories of this paper are: eess
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
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The categories of this paper are: econ
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The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
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The categories of this paper are: q-alg
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The categories of this paper are: math-ph