Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Environmental effects on the electrical characteristics of back-gated
  WSe2 field effect transistors   We study the effect of polymer coating, pressure and temperature on the
electrical characteristics of monolayer WSe2 back-gated transistors with
quasi-ohmic Ni/Au contacts. We find that the removal of a layer of poly(methyl
methacrylate) or decreasing the pressure change the device conductivity from p
to n-type. We study the current-voltage characteristics as a function of the
temperature and measure a gate-tunable Schottky barrier at the contacts with a
height of 60 meV in flat-band condition. We report and discuss a change in the
mobility and the subthreshold slope observed with increasing temperature.
Finally, we estimate the trap density at the WSe2/SiO2 interface and study the
spectral photoresponse of the device, achieving a responsivity of 0.5 AW^-1 at
700 nm wavelength and 0.37 mWcm^-2 optical power.

33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg