Materials,
Journal Year:
2025,
Volume and Issue:
18(7), P. 1518 - 1518
Published: March 28, 2025
Metal
halide
perovskite
nanorods
hold
great
promise
for
optoelectronic
applications.
However,
they
tend
to
undergo
phase
transitions
due
the
instability
of
crystal
under
environmental
conditions,
leading
a
rapid
decline
in
fluorescence
efficiency.
Here,
we
report
method
which
trioctylphosphine
(TOP)
directly
serves
as
both
surface
ligand
and
solvent
synthesize
highly
stable
α-CsPbI3
(NRs).
This
approach
produces
monodisperse
α-phase
NRs
with
controlled
sizes
(1
μm
150
nm
length,
an
aspect
ratio
10:1),
confirmed
by
high-resolution
transmission
electron
microscopy
(TEM)
X-ray
diffraction.
The
optimized
exhibit
high
photoluminescence
quantum
yield
around
80%,
well
excellent
stability;
after
15
days
storage,
(PLQY)
retention
is
90%.
Transient
absorption
spectroscopy
shows
that
carrier
lifetime
extended
23.95
ns
27.86
ns,
attributed
dual
role
TOP
defect
passivation
hydrolysis
suppression.
work
provides
scalable
paradigm
stabilizing
metastable
nanostructures
through
rational
selection,
paving
way
durable
perovskite-based
optoelectronics.
Crystals,
Journal Year:
2025,
Volume and Issue:
15(1), P. 90 - 90
Published: Jan. 18, 2025
This
study
addresses
the
environmental
and
resource
challenges
posed
by
growing
volume
of
waste
electric
porcelain
in
power
industry
developing
solar
absorption
thermal
storage
integrated
ceramics
(SATS
ceramics)
from
porcelain.
These
SATS
ceramics,
which
feature
an
exceptional
mullite
structure,
were
crafted
through
optimization
sintering
process.
Notably,
when
sintered
at
1400
°C
with
11
wt.%
magnetite
content,
resulting
material
boasts
optimal
short-clustered,
ordered,
interwoven
columnar
structure.
structure
endows
a
remarkable
flexural
strength
96.05
MPa
specific
heat
capacity
up
to
0.6415
J/(g*
°C)
300
°C,
significantly
enhancing
its
energy
efficiency.
research
offers
innovative
insights
into
high-value
utilization
development
materials,
underscoring
significant
economic
advantages.
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: Feb. 1, 2025
Abstract
The
high-entropy
strategy
has
emerged
as
a
prevalent
approach
to
boost
capacitive
energy-storage
performance
of
relaxors
for
advanced
electrical
and
electronic
systems.
However,
exploring
high-performance
systems
poses
challenges
due
the
extensive
compositional
space.
Herein,
with
assistance
machine
learning
screening,
we
demonstrated
high
density
20.7
J
cm
-3
efficiency
86%
in
Pb-free
relaxor
ceramic.
A
random
forest
regression
model
key
descriptors
based
on
limited
reported
experimental
data
were
developed
predict
screen
elements
chemical
compositions
Following
basic
experiments,
(Bi
0.5
Na
)TiO
3
-based
characterized
by
fine
grains,
weakly-coupled
small-sized
polar
clusters
was
identified.
This
resulted
near-linear
polarization
behavior
an
ultrahigh
breakdown
strength
95
kV
mm
-1
.
Further,
this
realxor
presented
discharge
energy
7.7
under
rate
about
27
ns,
along
superior
temperature
fatigue
stability.
Our
results
present
data-driven
efficiently
relaxors,
demonstrating
potential
developing
relaxors.
