Materials,
Год журнала:
2025,
Номер
18(7), С. 1518 - 1518
Опубликована: Март 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.
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(27), С. 16735 - 16747
Опубликована: Янв. 1, 2024
(1
−
x
)KNN–
BCZT-based
transparent
ceramics
with
a
W
rec
of
7.83
J
cm
−3
and
an
η
81.02%
were
obtained.
High
polarization
boundaries
conductive
mechanism
transition
revealed
to
be
the
main
reasons
for
such
good
performances.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 5, 2024
Abstract
Electrostatic
capacitors
with
ultrahigh
energy‐storage
density
are
crucial
for
the
miniaturization
of
pulsed
power
devices.
A
long‐standing
challenge
is
developing
dielectric
materials
that
achieve
recoverable
energy
W
rec
≥
10
J
cm
−3
under
moderate
electric
fields
(30
≤
E
50
kV
mm
−1
).
Herein,
a
specific
high‐entropy
strategy
proposed
to
modulate
phase
structure
and
interfacial
polarization
medium‐entropy
base
using
linear
dielectrics.
This
ensures
sufficient
polar
high
enough
field
complete
polarization,
thereby
achieving
by
enhancing
strength.
The
validity
this
demonstrated
in
(Na
0.282
Bi
Ba
0.036
Sr
0.28
Nd
0.08
)TiO
3‐x
Ca
0.7
0.2
TiO
3
(NBBSNT‐
x
CBT)
(x
=
0–0.15)
system.
CBT‐modulated
samples
exhibit
polyphase
R3c,
P4bm,
Pm‐3m
reduced
remnant
(Pr).
Additionally,
addition
CBT
effectively
suppresses
maximum
(
P
max
These
factors
significantly
improve
value
∆P
−
r
.
As
result,
an
10.5
high‐efficiency
η
80.3%
obtained
0.1
sample
45
first
time.
work
paves
way
superior
performance
fields.
