Applied Physics Reviews,
Год журнала:
2020,
Номер
7(4)
Опубликована: Дек. 1, 2020
Spin–orbit
coupling
(SOC)
in
two-dimensional
(2D)
materials
has
emerged
as
a
powerful
tool
for
designing
spintronic
devices.
On
the
one
hand,
interest
this
respect
graphene,
most
popular
2D
material
with
numerous
fascinating
and
exciting
properties,
is
fading
due
to
absence
of
SOC.
other
transition
metal
dichalcogenides
(TMDs)
are
known
exhibit
rich
physics
including
large
TMDs
have
been
used
decades
variety
applications
such
nano-electronics,
photonics,
optoelectronics,
sensing,
recently
also
spintronics.
Here,
we
review
current
progress
research
on
generating
spin–orbit
torques
spin-logic
Several
challenges
connecting
thin
film
growth,
thickness,
layer
symmetry,
transport
properties
their
impact
efficiency
devices
reviewed.
How
different
generate
magnetic
heterostructures
discussed
detail.
Relevant
aspects
improving
quality
growth
well
generated
together
future
perspectives
field
spin-orbitronics.
Light Science & Applications,
Год журнала:
2021,
Номер
10(1)
Опубликована: Апрель 2, 2021
Abstract
Van
der
Waals
(vdW)
heterostructures
based
on
transition
metal
dichalcogenides
(TMDs)
generally
possess
a
type-II
band
alignment
that
facilitates
the
formation
of
interlayer
excitons
between
constituent
monolayers.
Manipulation
in
TMD
vdW
holds
great
promise
for
development
excitonic
integrated
circuits
serve
as
counterpart
electronic
circuits,
which
allows
photons
and
to
transform
into
each
other
thus
bridges
optical
communication
signal
processing
at
circuit.
As
consequence,
numerous
studies
have
been
carried
out
obtain
deep
insight
physical
properties
excitons,
including
revealing
their
ultrafast
formation,
long
population
recombination
lifetimes,
intriguing
spin-valley
dynamics.
These
outstanding
ensure
with
good
transport
characteristics,
may
pave
way
potential
applications
efficient
devices
heterostructures.
At
present,
systematic
comprehensive
overview
exciton
relaxation,
transport,
is
still
lacking.
In
this
review,
we
give
description
discussion
these
frontier
topics
provide
valuable
guidance
researchers
field.
Advanced Energy Materials,
Год журнала:
2021,
Номер
12(4)
Опубликована: Июнь 26, 2021
Abstract
2D
materials
are
regarded
as
promising
electrode
for
rechargeable
batteries
because
of
their
advantages
in
providing
ample
active
sites
and
improving
electrochemical
reaction
kinetics.
However,
it
remains
a
great
challenge
to
fulfill
all
requirements
high‐performance
energy
storage
devices
terms
electronic
conductivity,
the
number
accessible
sites,
structural
stability,
mass
production
capability.
Recent
advances
constructing
material‐based
heterostructures
offer
opportunities
utilizing
synergistic
effects
between
individual
blocks
achieve
optimized
properties
enhanced
performance.
In
this
perspective,
latest
summarized,
with
particular
emphasis
on
multifunctional
roles
batteries.
Synthetic
strategies,
features
mixed
dimensionalities,
structure
engineering
distinct
functionalities
various
applications
systematically
introduced.
Finally,
challenges
perspectives
presented
highlight
future
developing
practical
storage.
Sensors,
Год журнала:
2021,
Номер
21(8), С. 2758 - 2758
Опубликована: Апрель 14, 2021
Photodetectors
based
on
transition
metal
dichalcogenides
(TMDs)
have
been
widely
reported
in
the
literature
and
molybdenum
disulfide
(MoS2)
has
most
extensively
explored
for
photodetection
applications.
The
properties
of
MoS2,
such
as
direct
band
gap
low
dimensional
structures,
strong
light–matter
interaction
good
carrier
mobility,
combined
with
possibility
fabricating
thin
MoS2
films,
attracted
interest
this
material
field
optoelectronics.
In
work,
MoS2-based
photodetectors
are
reviewed
terms
their
main
performance
metrics,
namely
responsivity,
detectivity,
response
time
dark
current.
Although
neat
detectors
already
show
remarkable
characteristics
visible
spectral
range,
can
be
advantageously
coupled
other
materials
to
further
improve
detector
Nanoparticles
(NPs)
quantum
dots
(QDs)
exploited
combination
boost
devices
near
ultraviolet
(NUV)
infrared
(IR)
range.
Moreover,
heterostructures
different
(e.g.,
TMDs,
Graphene)
speed
up
through
creation
built-in
electric
fields
faster
transport
charge
carriers.
Finally,
order
enhance
stability
devices,
perovskites
both
passivation
layers
electron
reservoirs.
Physical review. B./Physical review. B,
Год журнала:
2022,
Номер
105(7)
Опубликована: Фев. 14, 2022
Two-dimensional
ferrovalley
semiconductors
with
robust
room-temperature
ferromagnetism
and
sizable
valley
polarization
hold
great
prospects
for
future
miniature
information
storage
devices.
As
a
new
member
of
the
ferroic
family,
however,
such
materials
have
rarely
been
reported.
By
first-principles
calculations,
we
identify
that
monolayer
$\mathrm{Ce}{\mathrm{I}}_{\text{2}}$
is
an
intrinsic
ferromagnetic
semiconductor
exhibits
excellent
ambient
stability,
strong
easy
in-plane
magnetocrystalline
anisotropy,
high
magnetic
transition
temperature
up
to
374
K.
The
found
arise
from
hybridization
Ce-$4f/5d$
I-$5p$
orbitals.
When
magnetized
toward
off-plane
$z$
direction,
spontaneous
as
large
208
meV
in
top
valence
band
can
be
achieved
due
simultaneous
breaking
both
inversion
symmetry
time-reversal
symmetry,
which
further
verified
by
perturbation
theory
spin-orbital
coupling.
Also,
anomalous
Hall
effect
observed
under
electrical
field
valley-contrasting
Berry
curvature.
Overall,
combination
semiconducting
renders
compelling
potential
applications
nanoscale
spintronics
valleytronics.
Chemical Reviews,
Год журнала:
2024,
Номер
124(17), С. 10112 - 10191
Опубликована: Авг. 27, 2024
Two-dimensional
(2D)
transition
metal
dichalcogenide
(TMD)
heterostructures
have
attracted
a
lot
of
attention
due
to
their
rich
material
diversity
and
stack
geometry,
precise
controllability
structure
properties,
potential
practical
applications.
These
not
only
overcome
the
inherent
limitations
individual
materials
but
also
enable
realization
new
properties
through
appropriate
combinations,
establishing
platform
explore
physical
chemical
at
micro-nano-pico
scales.
In
this
review,
we
systematically
summarize
latest
research
progress
in
synthesis,
modulation,
application
2D
TMD
heterostructures.
We
first
introduce
techniques
for
fabricating
heterostructures,
examining
rationale,
mechanisms,
advantages,
disadvantages
each
strategy.
Furthermore,
emphasize
importance
characteristic
modulation
discuss
some
approaches
achieve
novel
functionalities.
Then,
representative
applications
Finally,
highlight
challenges
future
perspectives
synthesis
device
fabrication
provide
feasible
solutions.
ACS Applied Nano Materials,
Год журнала:
2024,
Номер
7(8), С. 8593 - 8611
Опубликована: Апрель 15, 2024
The
hybrid
structures
of
transition-metal
dichalcogenides
and
oxides
show
enhanced
properties
by
incorporating
the
qualities
two
pristine
materials
into
a
single
one.
In
view
this,
present
work
focuses
on
synthesizing
series
MoS2/WO3
nanocomposites
wherein
molar
ratio
MoS2
to
WO3
was
gradually
varied
achieve
optimized
for
photovoltaic
applications.
samples
were
analyzed
structural,
optical,
morphological,
microstructural,
electrokinetic,
electrical,
electrochemical
properties.
Integrating
provided
in
form
wider
absorbance
range,
band
gap,
better
colloidal
stability,
increased
charge-carrier
mobility.
as-synthesized
showed
UV
visible
regions
with
gap
varying
from
1.3
2.66
eV.
zeta
potential
measurement
high
stability
some
values
<
−30
mV.
Hall
effect
study
revealed
enhancement
electrical
properties,
mobility
is
found
be
order
880
m2/(V
s).
redox
process
also
more
prominent
nanocomposite
as
well
diffusive
behavior
cyclic
voltammetry.
presence
Warburg
diffusion
along
high-exchange
current
density
observed
few
potentio
impedance
spectroscopy
highest
value
336
μA.
reveals
that
catalytic,
can
solar
cell
applications
controlling
constituent
materials.
Nano-Micro Letters,
Год журнала:
2020,
Номер
12(1)
Опубликована: Апрель 18, 2020
Abstract
Spintronics,
exploiting
the
spin
degree
of
electrons
as
information
vector,
is
an
attractive
field
for
implementing
beyond
Complemetary
metal-oxide-semiconductor
(CMOS)
devices.
Recently,
two-dimensional
(2D)
materials
have
been
drawing
tremendous
attention
in
spintronics
owing
to
their
distinctive
spin-dependent
properties,
such
ultra-long
relaxation
time
graphene
and
spin–valley
locking
transition
metal
dichalcogenides.
Moreover,
related
heterostructures
provide
unprecedented
probability
combining
different
characteristics
via
proximity
effect,
which
could
remedy
limitation
individual
2D
materials.
Hence,
engineering
has
growing
extremely
fast
made
significant
achievements
injection
manipulation.
Nevertheless,
there
are
still
challenges
toward
practical
application;
example,
mechanism
unclear,
high-efficiency
gating
not
yet
achieved.
In
this
review,
we
focus
on
systematically
summarize
progress
injection,
transport,
manipulation,
application
storage
processing.
We
also
highlight
current
future
perspectives
studies
spintronic
devices
based
Nano Letters,
Год журнала:
2020,
Номер
20(2), С. 1172 - 1182
Опубликована: Янв. 16, 2020
The
linear
dichroism
(LD)
transition
within
anisotropic
photonic
materials
displays
promising
prospects
for
applications
in
polarization-wavelength-selective
detectors,
optical
switching,
and
communication.
In
conventional
two-dimensional
(2D)
materials,
the
LD
is
predominantly
uniaxial
over
a
broad
spectrum
of
wavelengths
arises
principally
from
reduced
symmetry
materials.
However,
behavior
crystalline
2D
remains
elusive.
Here,
we
demonstrate
observation
unique
conversion
phenomenon
at
wavelength
472
nm
palladium
diselenide
(PdSe2)
using
polarization-resolved
absorption
spectroscopy.
This
material
exhibits
prominent
responses
high
ratio
αy/αx
≈
1.11
364
nm,
1.15
532
0.84
633
nm.
We
propose
that
this
abnormal
originates
forceful
localization
rules
different
parallel
energy
bands
exist
material.
Furthermore,
robust
periodicity
Ag
B1g
modes
Raman
spectroscopy
good
agreement
with
theoretical
structure
analysis.
indicates
strong
intrinsic
effect
nature
PdSe2,
which
offers
macrolevel
determination
crystal
orientations.
Such
features,
combination
effects,
enable
air-stable
PdSe2
to
be
potential
candidate
technological
innovations
multispectral
imaging,
sensing,
polarization-sensitive
wavelength-controllable
photoelectronic
applications.
