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.
InfoMat,
Journal Year:
2024,
Volume and Issue:
6(5)
Published: March 28, 2024
Abstract
Near‐infrared
(NIR)
luminescent
metal
halide
(LMH)
materials
have
attracted
great
attention
in
various
optoelectronic
applications
due
to
their
low‐temperature
solution‐processable
synthesis,
abundant
crystallographic/electronic
structures,
and
unique
properties.
However,
some
challenges
still
remain
luminescence
design,
performance
improvement,
application
assignments.
This
review
systematically
summarizes
the
development
of
NIR
LMHs
through
classifying
origins
into
four
major
categories:
band‐edge
emission,
self‐trapped
exciton
(STE)
ion
defect‐related
emission.
The
mechanisms
different
types
are
discussed
detail
by
analyzing
typical
examples.
Reasonable
strategies
for
designing
optimizing
luminescence/optoelectronic
properties
summarized,
including
bandgap
engineering,
self‐trapping
state
chemical
composition
modification,
energy
transfer,
other
auxiliary
such
as
improvement
synthesis
scheme
post‐processing.
Furthermore,
prospects
based
on
devices
revealed,
phosphor‐converted
light‐emitting
diodes
(LEDs),
electroluminescent
LEDs,
photodetectors,
solar
cells,
x‐ray
scintillators,
well
demonstrations
related
practical
applications.
Finally,
existing
future
perspectives
LMH
critically
proposed.
aims
provide
general
understanding
guidance
design
high‐performance
materials.
image
ACS Materials Letters,
Journal Year:
2024,
Volume and Issue:
6(10), P. 4555 - 4563
Published: Sept. 3, 2024
Presently,
there
are
very
limited
options
for
a
broad-band
long-wavelength
near-infrared
phosphor-converted
light-emitting
diode
(LWNIR
pc-LED)
with
wavelengths
above
∼1500
nm,
and
most
LWNIR
phosphors
have
low
luminescence
quantum
efficiency.
Here,
Ni2+-doped
MgIn2O4
antispinel
were
prepared
by
high-temperature
solid-state
reaction
method.
Under
365
nm
excitation,
they
exhibited
emission
in
the
range
of
1200–2100
an
peak
∼1490
full
width
at
half-maximum
∼313
indicating
weak
crystal
field
environment
high
electron
polarization
around
center
[MgO6]
octahedron.
The
IQE
EQE
MgIn2O4:Ni2+
∼47.93%
∼34.66%,
respectively.
optimized
phosphor
was
encapsulated
LED
chip
to
obtain
pc-LED
device
night
vision
lighting,
nonvisual
detection,
biological
imaging.
Our
results
confirmed
that
lighting
based
imaging
technology
showed
clear
safety
advantages
over
traditional
high-energy
ray
Journal of Materials Chemistry C,
Journal Year:
2023,
Volume and Issue:
11(47), P. 16638 - 16651
Published: Jan. 1, 2023
A
novel
glass-ceramic
system
with
selective
co-doping
of
Eu
2+
/Eu
3+
that
emits
warm-white
emission
a
correlated
color
temperature
<3500
K,
rendering
index
78,
and
quantum
yield
>46%
was
developed
by
combining
UV
chip
laser.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(36), P. 47952 - 47960
Published: Aug. 27, 2024
Long-wavelength
near-infrared
(LWNIR)
imaging
technology
has
exciting
application
potential
across
various
fields
due
to
its
ability
of
deeper
penetration
and
unique
properties
related
emission
wavelength,
when
compared
short-wavelength
imaging.
However,
the
limited
availability
materials
for
LWNIR
light
sources,
lack
suitable
host
that
constitute
luminescence
centers,
been
a
major
challenge
technical
obstacle
in
realizing
such
applications.
Here,
we
developed
MgIn
Journal of Materials Chemistry A,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
We
developed
Ni
2+
-doped
(Sr/Ba)
2
MgMoO
6
double
perovskite
molybdate-based
solid-solution
long
wavelength
near-infrared
luminescence
(1000–2000
nm)
phosphors,
which
shiftss
in
the
range
of
1400–1610
nm
by
simple
adjustment
Sr/Ba
ratio.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(44), P. 60599 - 60607
Published: Oct. 22, 2024
Near-infrared
phosphor-converted
light-emitting
diodes
(NIR
pc-LEDs)
as
a
new
NIR
light
source
has
outstanding
application
potential
in
the
fields
of
spectroscopy
analysis,
sensing,
imaging,
and
pattern
recognition.
Therefore,
development
phosphors
with
good
luminescence
thermal
stability
attracted
much
attention.
To
this
end,
we
developed
LiAlO2:Cr3+
garnet-type
by
high-temperature
solid-state
reaction
method.
Under
405
nm
excitation,
Cr3+
ions
located
tetrahedrons
LiAlO2
emit
emission
broadband
that
covers
650-900
mixed
several
sharp
narrowband
R-line
emissions,
which
showed
excellent
integrated
intensity
measured
at
573
K
is
∼90.86%
303
caused
structural
rigidity
low
expansion
coefficient
matrix
material.
An
pc-LED
device
assembled
optimized
commercially
available
purple
LED
chip
emitted
output
power
∼98.172
mW
driving
current
300
mA
demonstrated
an
electro-optical
conversion
efficiency
∼9.09%,
while
it
night
vision
monitoring
biomedical
imaging.
