Crystals,
Journal Year:
2024,
Volume and Issue:
14(12), P. 1077 - 1077
Published: Dec. 13, 2024
This
study
reviews
the
advanced
anti-counterfeiting
applications
of
CsCdCl3,
a
lead-free
all-inorganic
perovskite
crystal
exhibiting
dynamic
luminescent
properties
responsive
to
temperature
and
UV
light.
Using
synthesis
methods
such
as
Bridgman
hydrothermal
techniques
incorporating
dopants
like
bromine
tellurium,
this
research
achieves
improved
stability,
spectral
diversity,
afterglow
characteristics
in
CsCdCl3.
The
demonstrates
extended
afterglow,
photochromic
shifts,
temperature-sensitive
luminescence,
enabling
4D
encoding
for
secure
data
encryption
cold-chain
monitoring
pharmaceuticals.
Despite
these
promising
attributes,
challenges
related
photostability,
batch
consistency,
environmental
resilience
persist,
necessitating
further
exploration
into
optimized
doping
strategies
enhance
material
stability.
These
findings
underscore
potential
CsCdCl3
high-security
information
storage,
pharmaceutical
anti-counterfeiting,
real-time
sensing,
positioning
it
valuable
next
generation
secure,
intelligent
packaging
solutions.
Abstract
Mechanoluminescent
(ML)
materials
are
promising
for
applications
in
structural
health
monitoring,
biomedicine,
stress
sensing,
and
distribution
visualization
due
to
their
ability
emit
light
without
external
circuits.
However,
current
ML
face
challenges,
including
limited
luminescent
colors,
high
raw
material
costs,
toxicity,
lack
of
emissions
the
invisible
spectrum.
To
overcome
these
Ca
2
P
O
7
(CPO)
is
selected
as
matrix
its
excellent
piezoelectric
properties,
low
cost,
biocompatibility.
CPO
doped
with
various
ions
(X,
X
=
Ce
3+
,
Eu
2+/3+
Tb
Dy
Mn
2+
Sm
)
achieve
emission
bands
CPO:X
across
a
wide
range
wavelengths
UV,
blue,
green,
yellow
red.
Unlike
traditional
trap‐controlled
materials,
does
not
require
UV
pre‐irradiation
exhibits
remarkable
self‐recovery
properties.
First‐principles
density
functional
theory
(DFT)
calculations
confirmed
that
an
ideal
self‐recovering
materials.
Based
on
several
practical
devices
designed,
fencing
competition
scorekeeper,
wearable
flexible
skin,
protective
dental
crown
layer.
These
innovations
offer
new
directions
development
application
Advanced Materials Technologies,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 9, 2025
Abstract
Lead‐free
double
perovskites
(LFDP)
have
attracted
considerable
attention
due
to
their
remarkable
optoelectronic
characteristics,
which
include
tunable
bandgaps
spanning
the
entire
visible
spectrum,
high
photoluminescence
quantum
yields
(PLQY),
and
wide
emission
bandwidths.
The
incorporation
of
transition
metal
ions
into
lead‐free
perovskites,
as
an
efficient
method
for
tailoring
optical
properties,
is
crucial
both
foundational
research
practical
applications
in
devices
such
light‐emitting
diodes
(LEDs),
anti‐counterfeiting,
temperature
sensors,
X‐ray
scintillators.
In
this
review,
recent
progress
design
ion‐doped
summarized,
briefly
introduce
strategies
effective
doping
several
representative
perovskites.
manipulation
properties
through
ion
doping,
focusing
on
enhanced
stability,
increased
luminescent
efficiency,
tuning
bands,
luminescence
lifetimes
are
highlighted.
conclusion,
challenges
perspectives
dynamic
area
addressed.
Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
63(34), P. 16047 - 16055
Published: Aug. 14, 2024
Low-temperature
anticounterfeiting
technologies
play
a
crucial
role
in
ensuring
the
authenticity
and
integrity
of
temperature-sensitive
products
such
as
vaccines,
pharmaceuticals,
food
items.
In
this
work,
low-temperature
route
based
on
differentiated
photoluminescence
(PL),
PersL,
thermally
stimulated
luminescence
(TSL)
behaviors
metal
halide
perovskite,
pure
CsCdCl3,
CsCdCl3:10%
Te4+
is
proposed.
The
CsCdCl3
host
exhibits
pronounced
color
shifts,
encompassing
PL,
TSL
behaviors,
ranging
from
blue
to
yellow
orange
temperature
rises
100
K
room
temperature.
This
change
attributed
luminous
center
(from
D3d
octahedron
C3v
octahedron).
Conversely,
addition
inhibits
matrix
emission,
maintains
characteristic
emission
Te4+,
regulates
trap
distribution
at
low
TL
intensity.
work
highlights
significant
promise
phosphors
innovative
technologies,
especially
for
cold-chain
vaccine
safety
monitoring.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 12, 2024
Abstract
Erbium
ions
are
commonly
used
to
extend
the
photoelectric
properties
of
metal
halide
perovskites
from
visible
near‐infrared
range.
However,
achieving
high‐efficiency
multimode
luminescence
in
a
single
system
is
difficult
due
weak
absorption
associated
with
forbidden
4
f
‐4
transitions.
In
this
study,
unique
strategy
proposed
adjust
and
enhance
second
region
(NIR‐II)
emission
Cs
2
NaBiCl
6
by
incorporating
Fe
3+
ions.
The
as‐prepared
material
demonstrates
reversible
thermochromism,
driven
strong
electron‐phonon
coupling
effect,
exhibits
tunable
that
can
be
adjusted
altering
excitation
energy
temperature.
Notably,
benefitting
charge
transfer
transition
‐Cl
−
along
influence
doping
on
geometrical
electronic
structures,
blue‐excitable
(450
nm)
NIR‐II
around
1541
nm
Er
realized
for
first
time,
an
intensity
16.7
times
higher
maximum
photoluminescence
quantum
yield
(PLQY)
22.5
%.
This
enhancement
enables
innovative
applications
such
as
two‐dimensional
information
encryption
multi‐channel
cooperative
responses
improved
NIR
imaging.
study
highlights
potential
optimizing
perovskites,
opening
avenues
advanced
light
emitting
diodes
(LEDs),
thermometer,
anti‐counterfeiting,
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 12, 2024
Abstract
Erbium
ions
are
commonly
used
to
extend
the
photoelectric
properties
of
metal
halide
perovskites
from
visible
near‐infrared
range.
However,
achieving
high‐efficiency
multimode
luminescence
in
a
single
system
is
difficult
due
weak
absorption
associated
with
forbidden
4
f
‐4
transitions.
In
this
study,
unique
strategy
proposed
adjust
and
enhance
second
region
(NIR‐II)
emission
Cs
2
NaBiCl
6
by
incorporating
Fe
3+
ions.
The
as‐prepared
material
demonstrates
reversible
thermochromism,
driven
strong
electron‐phonon
coupling
effect,
exhibits
tunable
that
can
be
adjusted
altering
excitation
energy
temperature.
Notably,
benefitting
charge
transfer
transition
‐Cl
−
along
influence
doping
on
geometrical
electronic
structures,
blue‐excitable
(450
nm)
NIR‐II
around
1541
nm
Er
realized
for
first
time,
an
intensity
16.7
times
higher
maximum
photoluminescence
quantum
yield
(PLQY)
22.5
%.
This
enhancement
enables
innovative
applications
such
as
two‐dimensional
information
encryption
multi‐channel
cooperative
responses
improved
NIR
imaging.
study
highlights
potential
optimizing
perovskites,
opening
avenues
advanced
light
emitting
diodes
(LEDs),
thermometer,
anti‐counterfeiting,
Crystals,
Journal Year:
2024,
Volume and Issue:
14(12), P. 1077 - 1077
Published: Dec. 13, 2024
This
study
reviews
the
advanced
anti-counterfeiting
applications
of
CsCdCl3,
a
lead-free
all-inorganic
perovskite
crystal
exhibiting
dynamic
luminescent
properties
responsive
to
temperature
and
UV
light.
Using
synthesis
methods
such
as
Bridgman
hydrothermal
techniques
incorporating
dopants
like
bromine
tellurium,
this
research
achieves
improved
stability,
spectral
diversity,
afterglow
characteristics
in
CsCdCl3.
The
demonstrates
extended
afterglow,
photochromic
shifts,
temperature-sensitive
luminescence,
enabling
4D
encoding
for
secure
data
encryption
cold-chain
monitoring
pharmaceuticals.
Despite
these
promising
attributes,
challenges
related
photostability,
batch
consistency,
environmental
resilience
persist,
necessitating
further
exploration
into
optimized
doping
strategies
enhance
material
stability.
These
findings
underscore
potential
CsCdCl3
high-security
information
storage,
pharmaceutical
anti-counterfeiting,
real-time
sensing,
positioning
it
valuable
next
generation
secure,
intelligent
packaging
solutions.
