Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 13, 2025
Abstract
Perovskite
light‐emitting
diodes
(PeLEDs)
compliant
with
Rec.
2020
standards
have
raised
increasing
attention
for
next‐generation
displays.
As
a
class
of
pure‐green
emitters,
the
mixed‐cation
FA
x
Cs
1‐x
PbBr
3
perovskites
exhibit
compatible
band
emission,
but
suffer
from
inferior
luminescence
performance.
The
approach
to
tackling
this
issue
is
hindered
by
lack
in‐depth
understanding
their
crystallization
manipulating
mechanism.
This
work
unveils
process
0.7
0.45
GA
0.1
perovskites,
demonstrating
fast
spontaneous
growth
readily
induces
severe
crystal
defects
accompanied
poor
charge
confinement.
motivates
us
introduce
additional
kinetic
barriers
manipulate
perovskite
via
synergistic
co‐additives
3‐((2‐(methacryloyloxy)ethyldimethyl)ammonio)‐propane‐1‐sulfonate
(DMAPS)
and
1,4,7,10,13,16‐hexaoxacyclooctadecane
(crown).
multifunctional
groups
in
afford
robust
chemical
affinities
diverse
organic
inorganic
precursor
ions
simultaneously,
which
enable
decent
nanograin
effective
defect
healing
Ultimately,
high
photoluminescence
quantum
yield
96%
are
achieved.
resultant
PeLEDs
compliance
champion
external
efficiency
(EQE)
31.89%,
average
EQE
29.5%,
maximum
luminance
2
×
10
5
cd
m
−2
operational
half‐lifetime
3.2
h
at
an
initial
7000
(extrapolated:
≈3500
100
).
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 12, 2025
Abstract
Although
high‐entropy
materials
have
garnered
extensive
attention
due
to
their
substantially
enhanced
performance,
formation
generally
demands
prolonged
high‐temperature
synthetic
processes.
Moreover,
research
on
entropy‐stabilized
halide
perovskite
(ESHP)
semiconductor
colloidal
nanocrystals
(NCs)
is
scarce.
Herein,
a
highly
efficient
and
rapid
room
temperature
(RT)
approach
in
air
proposed,
involving
the
concurrent
incorporation
of
multi‐metal
cations
for
synthesis
high‐quality
all‐inorganic
ESHP
NCs
with
near‐unity
quantum
yield
excellent
stability.
Remarkably,
even
after
8
months
aging
air,
exhibited
superior
emission
characteristics
single‐exponential
decay
maintained
initial
NC
monodispersity.
Density
functional
theory
calculations
further
demonstrated
that
outstanding
performance
originated
from
diminished
crystal
defects
more
robust
octahedral
structure.
Significantly,
this
RT
entropy‐driven
can
be
extended
metal
diverse
composition
systems.
The
findings
inspire
new
perspectives
entropy‐stabilized,
high‐performance
toward
versatile
applications.
Advanced Materials Technologies,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 20, 2025
Abstract
A
significant
class
of
semiconductor
nanostructures,
colloidal
quantum
dots
(CQDs),
which
exhibit
narrow
emission
spectrum
and
tunable
frequency,
are
utilized
for
numerous
flexible
wearable
applications
including
state‐of‐the‐art
display,
biological
sensing,
showcasing
great
prospects
in
physiological
measurement,
health
monitoring,
rehabilitation.
Interestingly,
synthesizing
these
particles
using
methods
such
as
hot
injection
colloids
can
directly
tune
their
optical
properties
wavelengths
by
controlling
sizes,
greatly
contributes
to
materials
production
simplicity
scalability.
Importantly,
from
a
device
perspective,
due
the
advantages
solution‐processed
synthesis,
patterning
inkjet
printing,
CQDs
be
combined
with
soft
polymeric
substrates,
or
hierarchical
structures
facile
manner,
offering
extraordinary
flexibility
portability.
As
optoelectronic
devices,
CQD
function
photoresistors,
phototransistors,
through
other
mechanisms
convert
light
between
forms
energy,
enabling
highly
sensitive
detection
applications.
In
this
Review,
synthetic
approaches
summarized
CQDs,
fabrication
techniques,
mechanisms,
application
scenarios.
Furthermore,
challenges
associated
technologies,
stability
cost‐efficiency
discussed,
present
outlook
on
future
trends
devices
multi‐functional
integration,
constituent
component
devices.
Abstract
In
situ
growth
of
CsPbX
3
(X
=
Cl,
Br,
I)
perovskite
quantum
dots
(PeQDs)
in
inorganic
glass
can
address
their
stability
issue
for
wide‐color‐gamut
full‐color
backlit
displays.
However,
most
the
reported
precipitated
are
limited
by
low
absorption
and
external
efficiency
(EQE).
This
work
demonstrates
that
CaO
additive
adjust
polymerization
borosilicate
network,
promote
precipitation
whole‐family
PeQDs
with
a
record
above
75%.
As
result,
as‐prepared
green
red
@glass
Br
,
1
I
2
)
exhibit
high
EQEs
75%
67%,
pass
harsh
tests
after
immersing
water,
irradiating
intensive
blue
light
experiencing
85
°C/85%RH
aging
over
1000
h
owing
to
effective
protection
from
environment
help
robust
matrix.
proof
concept,
white
module
is
fabricated
coupling
single‐layer
yellow
enhanced
film
(PQDF)
guide
panel,
designed
prototype
display
device
wide
color
gamut
115%
NTSC
1953
exhibits
more
realistic
vivid
images.
will
pave
way
realization
commercial
application
ultra‐stable
QD‐backlight
Journal of Inorganic Materials,
Journal Year:
2025,
Volume and Issue:
40(1), P. 111 - 111
Published: Jan. 1, 2025
Perovskite
quantum
dots
have
unique
advantages
in
display.However,
their
long-term
stability
at
high
brightness
is
still
a
huge
challenge.Therefore,
this
article
focuses
on
the
progress
of
regulation
perovskite
and
luminescent
film
morphology,
explains
influence
long-range
ordered
dot
films
electroluminescent
properties,
looks
forward
to
development
prospects
improving
dots.
