Optics Express,
Год журнала:
2024,
Номер
32(4), С. 6258 - 6258
Опубликована: Янв. 26, 2024
Quasi-two-dimensional
perovskites
have
attracted
widespread
interest
in
developing
low-cost
high-quality
small
lasers.
The
nano
cavity
based
on
topologically
protected
valley
edge
states
can
be
robust
against
special
defects.
Here,
we
report
a
two-dimensional
perovskite
topological
photonic
crystal
laser
the
quantum
Hall
effect.
By
adjusting
position
of
air
holes
relative
to
pillar,
radiation
leakage
is
reduced
large
extent,
electric
field
distribution
becomes
more
uniform
and
quality
factor
as
high
3.6
×
10
Nano-Micro Letters,
Год журнала:
2024,
Номер
17(1)
Опубликована: Сен. 30, 2024
Abstract
The
rapid
advancement
of
nanotechnology
has
sparked
much
interest
in
applying
nanoscale
perovskite
materials
for
photodetection
applications.
These
are
promising
candidates
next-generation
photodetectors
(PDs)
due
to
their
unique
optoelectronic
properties
and
flexible
synthesis
routes.
This
review
explores
the
approaches
used
development
use
devices
made
different
architectures,
including
quantum
dots,
nanosheets,
nanorods,
nanowires,
nanocrystals.
Through
a
thorough
analysis
recent
literature,
also
addresses
common
issues
like
mechanisms
underlying
degradation
PDs
offers
perspectives
on
potential
solutions
improve
stability
scalability
that
impede
widespread
implementation.
In
addition,
it
highlights
encompasses
detection
light
fields
dimensions
other
than
intensity
suggests
avenues
future
research
overcome
these
obstacles
fully
realize
state-of-the-art
systems.
provides
comprehensive
overview
guides
efforts
towards
improved
performance
wider
applicability,
making
valuable
resource
researchers.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(10), С. 12277 - 12288
Опубликована: Фев. 29, 2024
Capitalizing
on
rapid
carrier
migration
characteristics
and
outstanding
photoelectric
conversion
performance,
halide
perovskite
memristors
demonstrate
an
exceptional
resistive
switching
performance.
However,
they
have
consistently
faced
constraints
due
to
material
stability
issues.
This
study
systematically
employs
elemental
modulation
dimension
engineering
effectively
control
with
different
dimensions
A-site
elements.
Compared
pure
3D
2D
perovskites,
the
quasi-2D
memristor,
specifically
BA0.15MA0.85PbI3,
is
identified
as
optimal
choice
through
observations
of
(HRS
current
<
10–5
A,
ON/OFF
ratio
>
103,
endurance
cycles
1000,
retention
time
104
s)
synaptic
plasticity
characteristics.
Subsequently,
a
comprehensive
investigation
into
various
aspects,
including
paired-pulse
facilitation
(PPF),
spike-variability-dependent
(SVDP),
spike-rate-dependent
(SRDP),
spike-timing-dependent
(STDP),
conducted.
Practical
applications,
such
memory–forgetting–memory
recognition
Modified
National
Institute
Standards
Technology
(MNIST)
database
handwritten
data
set
(accuracy
rate
reaching
94.8%),
are
explored
successfully
realized.
article
provides
good
theoretical
guidance
for
synaptic-like
simulation
in
memristors.
The
hot
phonon
bottleneck
in
BA
2
PbBr
4
perovskite
and
MoS
heterostructure
extends
electron
relaxation,
offering
insights
into
interfacial
coupling
dynamics
for
efficient
optoelectronics.
ACS Applied Nano Materials,
Год журнала:
2023,
Номер
6(16), С. 14980 - 14990
Опубликована: Авг. 7, 2023
We
report
a
facile,
solvent-free
surfactant-dependent
mechanochemical
synthesis
of
highly
luminescent
CsPbBr3
nanocrystals
(NCs)
and
study
their
scintillation
properties.
A
small
amount
surfactant
oleylamine
(OAM)
plays
an
important
role
in
the
two-step
ball
milling
method
to
control
size
emission
properties
NCs.
The
solid-state
synthesized
perovskite
NCs
exhibit
high
photoluminescence
quantum
yield
(PLQY)
up
88%
with
excellent
stability.
capped
different
amounts
were
dispersed
toluene
mixed
polymethyl
methacrylate
(PMMA)
polymer
cast
into
scintillator
discs.
With
increasing
concentration
OAM
during
synthesis,
PL
CsPbBr3/PMMA
nanocomposite
was
increased,
which
is
attributed
reduced
NC
aggregation
quenching.
also
varied
loading
studied
resulting
most
intense
observed
from
2%
perovskite-loaded
disc,
while
10%
loaded
disc
exhibited
highest
radioluminescence
(RL)
50
kV
X-rays.
strong
RL
may
be
deep
penetration
X-rays
composite,
combined
large
interaction
cross-section
high-Z
atoms
within
shows
peak
centered
at
536
nm
fast
decay
time
29.4
ns.
Further,
we
have
demonstrated
X-ray
imaging
performance
NC-loaded
disc.
Nanoscale Horizons,
Год журнала:
2023,
Номер
9(1), С. 44 - 92
Опубликована: Окт. 30, 2023
Exploring
the
synergy
of
2D-TMDs
and
organic
hybrid
heterostructures
to
modulate
TMD
properties.
This
comprehensive
review
covers
interlayer
exciton
emission,
various
devices,
including
synaptic
synthesis
techniques,
intricate
challenges
encountered
in
TMDO
heterostructures.
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(9), С. 5055 - 5079
Опубликована: Янв. 1, 2024
We
use
the
term
“complex
metal
halides”
to
refer
compounds
such
as
halide
perovskites.
Our
focus
includes
exploring
various
dimensionality
types,
with
a
specific
emphasis
on
structurally
2D
materials,
including
RP
and
DJ
phases.
ABX
3
(X
=
O)
perovskite
oxides
are
an
uprising
class
of
alternative
electrocatalysts
in
eminent
technologies
like
electrocatalysis,
photocatalysis,
thermocatalysis,
and
energy
storage.
The
perquisites
oxide
catalysts
encompass
ordered
atomic
structure,
structural/compositional
extensibility,
flexible
electronic
lucrativeness,
so
on.
ingenuity
to
precisely
control
tune
the
inherent
properties
by
reconstructing
their
crystal
structure
is
particularly
advantageous
electrocatalysis
reactions
oxygen
reduction
evolution
(ORR
OER).
Incorporating
multidimensional
imperfections
presumably
perfect
garnering
booming
attention
among
researchers.
This
concept
can
expertly
influence
boost
reaction
kinetics
during
electrocatalysis.
Defects
or
achieved
substituting
A‐
and/or
B‐sites
with
heteroatoms
vacancies.
Defect
engineering
points
a
promising
new
direction
development
catalysts.
work
surveys
recent
progress
defect
how
it
plays
vital
role
design,
application
mainly
ORR/OER.
architecture,
dimensionality,
types
based
on
cations,
structures,
stoichiometries
surveyed
for
comprehensive
understanding.
review
aims
provide
extensive
outlook
concerning
structural
defects.
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Фев. 7, 2025
Triple
cation
halide
perovskite
(TCP)
stands
out
as
a
superior
photoelectric
material,
with
broader
absorption
range,
higher
efficiency,
and
improved
environmental
stability.
Due
to
its
excellent
synaptic
plasticity,
TCP
facilitates
advanced
neural
morphological
operations
like
light-assisted
learning.
Here,
modifying
layer
of
polythiophene
(P3HT)
was
incorporated
onto
the
thin
film
enhance
resistive
switching
(RS)
characteristics
device,
which
exhibits
stability
(103
endurance
cycles
>
103
s
retention
time)
low
energy
consumption
(~
6.3
pJ
for
electrical
stimulus
~
6
optical
stimulus).
Additionally,
properties
/
P3HT
heterojunction
device
were
explored
under
optoelectric
coordinated
modulation,
encompassing
Long-Term
Potentiation
(LTP),
Depression
(LTD),
frequency-dependent
plasticity
(SRDP)
voltage-dependent
(SVDP).
By
leveraging
linear
arithmetic
operations,
Pavlovian
conditioned
reflex
vision
recognition
are
achieved.
The
accuracies
89.8%
88.1%
(electric
synapse)
enhanced
92.4%
92.2%
after
introduction
optoelectronic
cooperative
stimulation
on
8
×
28
modified
national
institute
standards
technology
(MNIST)
handwritten
digit
datasets.
This
study
holds
significant
implications
guiding
co-regulation
devices
in
field
electronics.
