Advanced Science,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 16, 2024
The
unique
layer-stacking
in
two-dimensional
(2D)
van
der
Waals
materials
facilitates
the
formation
of
nearly
degenerate
phases
matter
and
opens
novel
routes
for
design
low-power,
reconfigurable
functional
materials.
Electrochemical
ion
intercalation
between
stacked
layers
offers
a
promising
approach
to
stabilize
bulk
metastable
explore
effects
extreme
carrier
doping
strain.
However,
situ
characterization
methods
study
structural
evolution
dynamical
properties
these
intercalated
remains
limited.
Here
experimental
platform
is
presented
capable
simultaneously
performing
electrochemical
lithium-ion
multimodal
ultrafast
lattice
using
both
electron
diffraction
nonlinear
optical
techniques.
Using
layered
semimetal
WTe
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 27, 2025
Abstract
Harvesting
energy
from
low‐frequency
disordered
raindrop
motion
has
emerged
as
a
promising
hydrovoltaic
technology
for
power
generation
in
recent
years.
Hydrovoltaic
devices
have
garnered
widespread
attention
due
to
their
miniaturization,
portability,
and
substantial
potential.
However,
solid‐liquid
interactions
conventional
are
limited
by
the
strong
screening
charge
effect
of
film
structures,
which
leads
diminished
device
performance.
This
work
presents
three‐dimensional
(3D)
synergistic
strategy
patterning
zinc
oxide
(ZnO)
achieve
high
voltage
output.
At
50%
relative
humidity
20
°C,
single
patterned
ZnO
can
continuously
generate
pulse
exceeding
9
V
within
7
h,
is
15
times
greater
than
0.6
similarly
sized
thin‐film
device.
Further
assembling
multiple
parallel
units
ZnO,
supply
conducted
well
watch
demonstration.
Moreover,
lightweight
(20
g
m
−2
)
flexible
characteristics
make
them
ideal
large‐area
integration
collection
practical
applications.
Thousands
printed
fabricated
will
be
expected
establish
surface
micro/nanostructure
platforms
various
outdoor
environments
through
extensive
series‐parallel
connections.
Morphotaxy,
a
process
by
which
2D
material
is
chemically
modified
while
retaining
its
original
physical
dimensions,
an
emerging
strategy
for
synthesizing
unconventional
materials
at
the
atomically
thin
limit.
Morphotaxy
typically
implemented
vapor-phase
reactions
on
mechanically
exfoliated
or
vapor-deposited
van
der
Waals
(vdW)
materials.
Here
we
report
method
converting
solution-processed
films
of
InSe
into
InI2
and
InBr2
using
dilute
I2
Br2
solutions,
respectively.
The
converted
retain
dimensions
flakes,
providing
access
to
non-vdW
indium
halides
in
ultrathin
form.
Liquid-phase
exfoliation
directly
enables
this
morphotaxial
reaction
producing
nanosheets
with
high
surface
areas
introducing
residual
polyvinylpyrrolidone
that
stabilizes
flake
morphology
slows
reactivity
Br2.
Overall,
work
presents
versatile
achieving
metal
offers
mechanistic
insights
relevant
halogenation
other
Accounts of Chemical Research,
Год журнала:
2024,
Номер
57(17), С. 2490 - 2499
Опубликована: Авг. 16, 2024
ConspectusTwo-dimensional
materials
have
been
a
focus
of
study
for
decades,
resulting
in
the
development
library
nanosheets
made
by
variety
methods.
However,
many
these
atomically
thin
are
exfoliated
from
van
der
Waals
(vdW)
compounds,
which
inherently
weaker
bonding
between
layers
bulk
crystal.
Even
though
there
diverse
properties
and
structures
within
this
class
it
would
behoove
community
to
look
beyond
compounds
toward
exfoliation
non-vdW
as
well.
A
particular
that
may
be
amenable
ionically
bonded
layered
materials,
structurally
similar
vdW
but
alkali
ions
intercalated
layers.
Although
initially
they
more
difficult
exfoliate
due
lack
methodology
mechanical
exfoliation,
synthesis
techniques
developed
used
successfully
exfoliating
materials.
In
fact,
we
will
show,
some
cases
has
even
proven
advantageous
start
compound.The
method
highlight
here
is
chemical
significantly
better
understood
mechanistically
compared
when
was
first
conceived.
Encompassing
methods,
such
acid/base
reactions,
solvent
oxidative
extractions,
can
tailored
delamination
opens
up
possibilities
study.
addition,
beginning
with
analogues
lead
consistent
higher
quality
results,
overcoming
challenges
associated
general.
To
exemplify
this,
discuss
our
group's
work
on
1T'-WS
Advanced Optical Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 30, 2024
Abstract
Monolayer
transition
metal
dichalcogenides
(TMDCs)
have
extensive
applications
in
the
field
of
optics
and
optoelectronics
by
virtue
their
unique
band
structures
excitonic
properties.
Although
possessing
high
absorption
coefficient
emission
efficiency,
they
suffer
from
low
optical
absorptance
due
to
atomic
scale
thickness,
which
limits
photoluminescence
optoelectronic
performance.
In
spite
intense
research
efforts
on
enhancement
monolayer
TMDCs
cavities,
such
as
plasmonic
all‐dielectric
nanoresonators,
there
inevitably
exists
a
competition
between
them
because
loss
cavities.
Here,
strong
enhancements
WS
2
integrated
onto
TiO
nanohole
array
fabricated
colloidal
lithography
are
reported.
It
achieves
theoretically
tenfold
experimentally
sixfold
within
near
edge
when
TE
TM
modes
spectrally
overlap
with
A
exciton.
This
result
can
be
attributed
perfect
reflection
localization
properties
resonant
arrays.
Further,
is
also
significantly
improved
owing
increased
well
Purcell
effect.
Such
heterostructure
paves
way
for
designing
high‐efficiency
sources,
photodetectors,
photovoltaic
devices.
Two-dimensional
(2D)
semiconducting
dichalcogenides
hold
exceptional
promise
as
optoelectronic
materials
for
next-generation
electronic
and
photonic
devices,
well
their
hybrid
circuits.
Despite
this
potential,
the
pervasive
presence
of
defects
in
2D
results
carrier
mobility
photoluminescence
(PL)
that
fall
significantly
short
theoretical
predictions.
Although
defect
passivation
offers
a
potential
solution,
its
effects
have
been
inconsistent.
This
inconsistency
arises
from
current
methods,
which
fail
to
achieve
desired
binding
chemistry
band
structure
engineering
necessary
enhance
optical
electrical
properties
simultaneously.
In
work,
we
uncover
new
using
sequence-specific
chemical
(SSCP)
protocol
based
on
2-furanmethanothiol
(FSH)
bis(trifluoromethane)
sulfonimide
lithium
salt
(Li-TFSI),
allows
us
demonstrate
synchronized
100-fold
enhancement
both
WS2
monolayers.
We
propose
novel
synergistic
mechanism,
supported
by
ultrafast
transient
absorption
spectroscopy
(TA),
Hard
X-ray
photoelectron
(HAXPES),
density
functional
theory
(DFT)
calculations.
Our
findings
establish
performance
benchmark
monolayers,
paving
way
development
more
efficient
sustainable
semiconductor
technologies.
ACS Nano,
Год журнала:
2024,
Номер
18(36), С. 24617 - 24621
Опубликована: Авг. 27, 2024
Two-dimensional
(2D)
materials
show
intriguing
and
diverse
properties
in
different
fields,
stimulating
chemists
to
develop
synthetic
functional
methodologies
for
producing
solution-processable
nanosheets
on
a
large
scale.
However,
it
is
still
challenging
prepare
2D
industrial
applications
without
sacrificing
their
lab-scale
properties.
Solid
lithiation
exfoliation
can
achieve
the
hundred-gram-scale
production
of
transition
metal
telluride
nanosheets,
making
one
most
effective
strategies
mass
nanomaterials.
In
this
Perspective,
we
highlight
advantages,
propose
challenges,
discuss
opportunities
solid
as
promising
commercially
viable
method
Advanced Science,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 16, 2024
The
unique
layer-stacking
in
two-dimensional
(2D)
van
der
Waals
materials
facilitates
the
formation
of
nearly
degenerate
phases
matter
and
opens
novel
routes
for
design
low-power,
reconfigurable
functional
materials.
Electrochemical
ion
intercalation
between
stacked
layers
offers
a
promising
approach
to
stabilize
bulk
metastable
explore
effects
extreme
carrier
doping
strain.
However,
situ
characterization
methods
study
structural
evolution
dynamical
properties
these
intercalated
remains
limited.
Here
experimental
platform
is
presented
capable
simultaneously
performing
electrochemical
lithium-ion
multimodal
ultrafast
lattice
using
both
electron
diffraction
nonlinear
optical
techniques.
Using
layered
semimetal
WTe
