Applied Physics Letters,
Journal Year:
2024,
Volume and Issue:
125(17)
Published: Oct. 21, 2024
2D/3D
van
der
Waals
heterostructures
provide
an
excellent
platform
for
high-performance
optoelectronic
systems
by
combining
the
intrinsic
properties
of
2D
and
3D
materials.
In
this
study,
we
fabricate
study
a
type
II
ReS2/Si
vertical
heterojunction
with
multi-mode
photodetection.
dark,
exhibits
diode-like
behavior
low
reverse
current
high
rectification
ratio
∼103.
Under
illumination,
device
shows
linear
response
to
light
intensity.
The
photodetector
stable
repeatable
switching
can
be
operated
in
self-powered
mode
responsivity
about
0.10
mA/W
at
10
mW
incident
power
time
300
μs.
Based
on
first-principles
calculations,
propose
model
elucidate
photoconduction
mechanisms
occurring
heterostructure.
Optical Materials Express,
Journal Year:
2024,
Volume and Issue:
14(8), P. 1961 - 1961
Published: June 27, 2024
The
present
study
proposes
a
two-step
doping
strategy
for
achieving
efficient
Mg
of
h-BN,
involving
an
additional
post-annealing
treatment.
This
approach
leads
to
∼10
8
-fold
enhancement
in
conductivity
compared
with
the
as-doped
h-BN
grown
by
low-pressure
chemical
vapor
deposition.
mechanism
large
efficiency
after
was
investigated,
providing
evidence
that
this
treatment
not
only
facilitates
nanoparticle
decomposition
and
incorporation
atoms
into
but
also
restores
its
lattice
defects.
p-type
enlightens
promising
prospects
ultraviolet
optoelectronic
devices.
Nanotechnology,
Journal Year:
2024,
Volume and Issue:
35(39), P. 395703 - 395703
Published: July 11, 2024
Abstract
Friction
phenomena
in
two-dimensional
(2D)
materials
are
conventionally
studied
at
atomic
length
scales
a
few
layers
using
low-load
techniques.
However,
the
advancement
of
2D
for
semiconductor
and
electronic
applications
requires
an
understanding
friction
delamination
micrometers
scale
hundreds
layers.
To
bridge
this
gap,
present
study
investigates
frictional
resistance
mechanisms
tungsten
diselenide
(WSe
2
)
10
µ
m
100–500
nm
depths
integrated
force
microscopy
(AFM),
high-load
nanoscratch,
in-situ
scanning
electron
microscopic
(SEM)
observations.
AFM
revealed
heterogenous
distribution
single
WSe
layer
originating
from
surface
ripples,
with
mean
increasing
8.7
to
79.1
nN
as
imposed
increased
20
80
nN.
High-load
nano-scratch
tests
delineated
role
individual
mechanism
multi-layer
under
SEM.
Delamination
during
scratch
consists
stick-slip
motion
each
successive
slip,
manifested
slope
lateral
curves
depth
10.9
13.0
(×
3
Nm
−1
.
is
followed
by
cyclic
fracture
where
puckering
effect
results
adherence
nanoscratch
probe,
local
maximum
89.3
205.6
N.
This
establishment
interconnectedness
between
single-layer
harbors
potential
utilizing
these
devices
reduced
energy
losses
enhanced
performance.
Applied Physics Letters,
Journal Year:
2024,
Volume and Issue:
125(17)
Published: Oct. 21, 2024
2D/3D
van
der
Waals
heterostructures
provide
an
excellent
platform
for
high-performance
optoelectronic
systems
by
combining
the
intrinsic
properties
of
2D
and
3D
materials.
In
this
study,
we
fabricate
study
a
type
II
ReS2/Si
vertical
heterojunction
with
multi-mode
photodetection.
dark,
exhibits
diode-like
behavior
low
reverse
current
high
rectification
ratio
∼103.
Under
illumination,
device
shows
linear
response
to
light
intensity.
The
photodetector
stable
repeatable
switching
can
be
operated
in
self-powered
mode
responsivity
about
0.10
mA/W
at
10
mW
incident
power
time
300
μs.
Based
on
first-principles
calculations,
propose
model
elucidate
photoconduction
mechanisms
occurring
heterostructure.
