Chinese Physics Letters,
Год журнала:
2024,
Номер
41(6), С. 063201 - 063201
Опубликована: Май 8, 2024
Abstract
The
Cs
2
NaInCl
6
double
perovskite
is
one
of
the
most
promising
lead-free
perovskites
due
to
its
exceptional
stability
and
straightforward
synthesis.
However,
it
faces
challenges
related
inefficient
photoluminescence.
Doping
high
pressure
are
employed
tailor
optical
properties
.
Herein,
Sb
3+
doped
(Sb
:Cs
)
was
synthesized
exhibits
blue
emission
with
a
photoluminescence
quantum
yield
up
37.3%.
Further,
by
employing
tuning,
stable
under
very
wide
range
from
2.7
GPa
9.8
realized
in
Subsequently,
intensity
experiences
significant
increase
(3.3
times)
at
19.0
GPa.
It
revealed
that
pressure-induced
distinct
emissions
can
be
attributed
carrier
self-trapping
detrapping
between
Notably,
lattice
compression
cubic
phase
inevitably
modifies
band
gap
Our
findings
provide
valuable
insights
into
effects
further
boosting
unique
characteristics
but
also
offer
opportunities
for
development
enhanced
functionalities.
Abstract
The
smart
materials
with
multi‐color
and
stimuli‐responsive
luminescence
are
very
promising
for
next
generation
of
optical
information
encryption
anti‐counterfeiting,
but
these
still
scarce.
Herein,
a
multi‐level
strategy
is
developed
based
on
the
polychromatic
emission
Sb‐doped
double
perovskite
powders
(SDPPs).
Cs
2
NaInCl
6
:Sb,
KInCl
AgInCl
:Sb
synthesized
through
coprecipitation
methods
exhibit
broadband
emissions
bright
blue,
cyan,
orange
colors,
respectively.
transmitted
by
specific
SDPP
encrypted
when
different
SDPPs
mixed.
confidential
can
be
decrypted
selecting
corresponding
narrowband
filter.
Then,
an
quick
response
(QR)
code
improved
security
demonstrated
this
multi‐channel
selection
strategy.
Moreover,
three
types
water‐triggered
switching
behaviors.
represented
erased/recovered
simple
water
spray/drying.
Whereas,
collected
from
green
channel
permanently
erased
moisture,
which
fundamentally
avoids
leakage.
Therefore,
schemes
designed
to
meet
variety
requirements.
multicolor
greatly
enrich
flexibility
encryption,
leaps
level
confidentiality.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(24)
Опубликована: Апрель 15, 2024
Exploration
of
efficient
red
emitting
antimony
hybrid
halide
with
large
Stokes
shift
and
zero
self-absorption
is
highly
desirable
due
to
its
enormous
potential
for
applications
in
solid
light
emitting,
active
optical
waveguides.
However,
it
still
challenging
rarely
reported.
Herein,
a
series
(TMS)
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 29, 2025
Abstract
Light‐emitting
diodes
(LEDs)
based
on
halide
perovskite
nanocrystals
have
attracted
extensive
attention
due
to
their
considerable
luminescence
efficiency,
wide
color
gamut,
high
purity,
and
facile
material
synthesis.
Since
the
first
demonstration
of
LEDs
MAPbBr
3
was
reported
in
2014,
community
has
witnessed
a
rapid
development
performances.
In
this
review,
historical
perspective
is
provided
then
comprehensive
survey
current
strategies
for
high‐efficiency
lead‐based
LEDs,
including
synthesis
optimization,
ion
doping/alloying,
shell
coating
presented.
Then
basic
characteristics
emission
mechanisms
lead‐free
perovskite‐related
emitters
environmentally
friendly
from
standpoint
different
colors
are
reviewed.
Finally,
progress
LED
applications
covered
an
outlook
opportunities
challenges
future
developments
field
provided.
Journal of Materials Chemistry C,
Год журнала:
2023,
Номер
11(48), С. 16890 - 16911
Опубликована: Янв. 1, 2023
In
this
review,
the
organic
luminescence
properties
of
low-dimensional
organic–inorganic
hybrid
metal
halides
(LDMHs)
are
summarized,
with
emphasis
on
mechanism,
regulating
strategy
and
applications
in
LDMHs.
Chemistry of Materials,
Год журнала:
2024,
Номер
36(2), С. 901 - 910
Опубликована: Янв. 9, 2024
Broadband
near-infrared
(NIR)
luminescent
materials
hold
the
key
to
next-generation,
smart,
NIR
light
sources.
The
emerging
halide
perovskite
are
regarded
as
promising
candidates
for
optoelectronics
because
of
their
superior
optical
properties
and
easy
solution
processability.
However,
it
remains
a
major
challenge
realize
efficient
thermally
stable
broadband
luminescence
in
these
materials.
Herein,
we
report
novel
strategy
achieve
by
utilizing
transitions
from
lowest
1T2
level
Mo4+
components
its
3T1
ground
state
soft
Cs2Zr(Cl,Br)6
lattice.
multiple
transitions,
each
occurring
within
(4d2)
t22
crystal-field
configuration
containing
zero-phonon
vibronic
contributions,
superimpose
on
other
generate
emission.
emission
spectrum
encompasses
long
wavelength
region
800
1400
nm
centered
at
970
with
full
width
half-maximum
170
nm.
More
importantly,
title
phosphor
shows
an
exceptional
quantum
efficiency
(66.9%)
thermal
stability
(67%@150
°C).
as-fabricated
phosphor-converted
light-emitting
diode
great
potential
lighting
source.
This
research
opens
new
horizon
realizing
high-performance
exploiting
electronic
activators
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(11), С. 7831 - 7838
Опубликована: Март 6, 2024
Low-dimensional
lead
halide
perovskites
with
broadband
emission
hold
great
promise
for
single-component
white-light-emitting
(WLE)
devices.
The
origin
of
their
has
been
commonly
attributed
to
self-trapped
excitons
(STEs)
composed
localized
electronic
polarization
a
distorted
lattice.
Unfortunately,
the
exact
and
structural
nature
STE
species
in
these
WLE
materials
remains
elusive,
hindering
rational
design
high-efficiency
materials.
In
this
study,
by
combining
ultrafast
transient
absorption
spectroscopy
ab
initio
calculations,
we
uncover
surprisingly
similar
features
two
prototypical
low
dimensional
perovskite
single
crystals:
1D
(DMEDA)PbBr4
2D
(EDBE)PbBr4,
despite
different
dimensionalities.
Photoexcited
rapidly
localize
intrinsic
STEs
within
∼250
fs,
contributing
white
light
emission.
Crucially,
both
systems
exhibit
characteristic
akin
those
Pb+
Pb3+.
Further
atomic
level
theoretical
simulations
confirm
photoexcited
electrons
holes
are
on
Pb2+
site
form
Pb+-
Pb3+-like
species,
resembling
photoinduced
disproportionation.
This
study
provides
conclusive
evidence
key
excited
state
exciton
self-trapping
paves
way
Chemical Science,
Год журнала:
2024,
Номер
15(10), С. 3530 - 3538
Опубликована: Янв. 1, 2024
The
chirality-dependent
lattice
distortion
assisted
by
a
crown
ether
leads
to
an
intense
STEs
emission
along
with
CPL.
distinct
endows
the
Sb
halides
multi-stimuli-responsive
PL
behaviours
towards
excitation
wavelength
and
temperature.
