Recent Developments of Advanced Broadband Photodetectors Based on 2D Materials
Yan Tian,
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Huan Liu,
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Jing Li
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et al.
Nanomaterials,
Journal Year:
2025,
Volume and Issue:
15(6), P. 431 - 431
Published: March 11, 2025
With
the
rapid
development
of
high-speed
imaging,
aerospace,
and
telecommunications,
high-performance
photodetectors
across
a
broadband
spectrum
are
urgently
demanded.
Due
to
abundant
surface
configurations
exceptional
electronic
properties,
two-dimensional
(2D)
materials
considered
as
ideal
candidates
for
photodetection
applications.
However,
with
both
high
responsivity
fast
response
time
remain
challenging
issue
all
researchers.
This
review
paper
is
organized
follows.
Introduction
introduces
fundamental
properties
performances
transition
metal
dichalcogenides
(TMDCs),
perovskites,
topological
insulators,
graphene,
black
phosphorus
(BP).
section
provides
an
in-depth
analysis
their
unique
optoelectronic
probes
intrinsic
physical
mechanism
detection.
In
Two-Dimensional
Material-Based
Broadband
Photodetectors,
some
innovative
strategies
given
expand
detection
wavelength
range
2D
material-based
enhance
overall
performances.
Among
them,
chemical
doping,
defect
engineering,
constructing
heterostructures,
strain
engineering
methods
found
be
more
effective
improving
The
last
addresses
challenges
future
prospects
photodetectors.
Furthermore,
meet
practical
requirements
very
large-scale
integration
(VLSI)
applications,
work
reliability,
production
cost
compatibility
planar
technology
should
paid
much
attention.
Language: Английский
Modulation of the Optical Properties of Monolayer WS2 by the Single-Atom Sites
S. Li,
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Binbin Chen,
No information about this author
Yige Yan
No information about this author
et al.
Langmuir,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 26, 2025
Monolayer
tungsten
disulfide
(ML
WS2)
exhibits
remarkable
optical
and
electrical
properties,
but
its
limited
light
absorption
hinders
application
in
next-generation
sensors
detectors.
Therefore,
it
is
vital
to
design
mixed-dimensional
heterostructure
(MDH)
interfaces
that
enhance
overall
facilitate
the
effective
transfer
of
photogenerated
carriers
simultaneously.
In
this
study,
MDHs
consisting
zero-dimensional
(0D)
single-site
single-tungsten-atom
oxides
(STAOs)
two-dimensional
(2D)
ML
WS2
were
successfully
constructed.
The
properties
have
been
comprehensively
characterized
by
using
a
series
techniques
including
absorption,
photoluminescence
(PL),
Raman
techniques.
comparison
case
WS2,
both
geometric
configurations
(WS2/STAO/SiO2
STAO/WS2/SiO2)
show
similar
results
PL
spectra:
heterostructures
enhanced,
meanwhile,
STAOs
significantly
reduce
intensity
A-exciton
while
increasing
trion-to-exciton
ratio.
These
suggest
charge
process
may
occur
between
STAO
due
formation
interactions.
order
confirm
existence
transfer,
copper
phthalocyanine
(CuPc)
has
chosen
as
target
molecules
surface-enhanced
spectroscopy
(SERS)
experiments
for
configurations.
It
interesting
see
signals
CuPc
almost
no
enhancement
sometimes
even
quenching
effect
STAO/WS2,
WS2/STAO,
they
exhibit
an
amount-dependent
exponential
trend,
with
factor
up
∼37
at
1531
cm–1
peak.
Furthermore,
Vienna
Ab
initio
Simulation
Package
(VASP)
theoretical
calculations
electrons
can
efficiently
from
which
consistent
our
experimental
results.
Our
work
demonstrates
method
tuning
2D
materials
via
single
sites,
providing
new
strategies
evidence
employing
sensitive
multifunctional
optoelectronic
devices.
Language: Английский