Laser & Photonics Review,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 25, 2025
Abstract
Co‐doping
of
rare
earth
(RE)
and
ns
2
metal
ions
with
in
double
perovskites
shows
great
promise
for
applications
anti‐counterfeiting,
display,
radiation
detection.
However,
the
intrinsic
physical
nature
enhanced
photoluminescence
remains
unclear.
Herein,
we
use
gadolinium‐based
perovskite
as
model
propose
an
effective
strategy
co‐doping
RE3+
Sb3+
(5s
)
to
modulate
energy
transfer.
The
incorporation
Sb
3+
increases
absorption
cross
section,
thereby
overcoming
limitation
4f–4f
narrowband
transitions.
Furthermore,
acts
a
bridge
transfer,
significantly
facilitating
this
process.
Density
functional
theory
calculations
reveal
that
introduction
disrupts
symmetry
[RECl
6
]
3–
octahedra,
leading
increased
distortion.
Additionally,
electrons
octahedra
exhibit
stronger
localization
/RE
co‐doped
system,
which
enhances
Cl
–
–RE
charge
transfer
process,
increasing
radiative
transition
rates
resulting
high
quantum
yield.
Our
research
elucidates
essence
luminescence
RE‐based
from
both
experimental
theoretical
perspectives,
providing
valuable
insights
into
modulation
luminescent
properties
understanding
underlying
mechanisms
RE
doped
materials.
Advanced Materials,
Год журнала:
2024,
Номер
36(21)
Опубликована: Фев. 21, 2024
Near-Infrared
(NIR)
light
emitting
metal
halides
are
emerging
as
a
new
generation
of
optical
materials
owing
to
their
appealing
features,
which
include
low-cost
synthesis,
solution
processability,
and
adjustable
properties.
NIR-emitting
perovskite-based
light-emitting
diodes
(LEDs)
have
reached
an
external
quantum
efficiency
(EQE)
over
20%
device
stability
10,000
h.
Such
results
sparked
interest
in
exploring
NIR
halide
emitters.
In
this
review,
several
different
types
halides,
including
lead/tin
bromide/iodide
perovskites,
lanthanide
ions
doped/based
double
low
dimensional
hybrid
Bi
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(44)
Опубликована: Май 22, 2024
Abstract
The
double
perovskite
material
of
Cs
2
NaRECl
6
‐type,
utilizing
rare‐earth
(RE)
ions
as
trivalent
element,
has
attracted
widespread
interest
due
to
its
unique
optoelectronic
properties
and
wide
range
applications.
It
displays
rich
optical
properties,
including
visible
infrared
light
emission
through
down‐shifting,
well
up‐conversion
radiation‐induced
emission.
These
exceptional
make
it
a
promising
for
devices
such
detectors,
light‐emitting
diodes,
lasers
energy
storage
batteries
but
also
show
advantages
in
anti‐counterfeiting
technology
imaging.
In
this
article,
the
latest
progress
is
reported
challenges
crystal
structure,
preparation,
performance,
various
applications
lead‐free
halide
(HLDPs)
compounds.
This
outline
prospective
research
directions
existing
materials,
with
aim
facilitating
discovery
new
HLDPs
materials.
Light Science & Applications,
Год журнала:
2025,
Номер
14(1)
Опубликована: Янв. 2, 2025
Abstract
Low-dimensional
lead-free
metal
halide
perovskites
are
highly
attractive
for
cutting-edge
optoelectronic
applications.
Herein,
we
report
a
class
of
scandium-based
double
perovskite
crystals
comprising
antimony
dopants
that
can
generate
multiexcitonic
emissions
in
the
ultraviolet,
blue,
and
yellow
spectral
regions.
Owing
to
zero-dimensional
nature
crystal
lattice
minimizes
energy
crosstalk,
different
excitonic
states
be
selectively
excited
by
ultraviolet
light,
X-ray
irradiation,
mechanical
action,
enabling
dynamic
control
steady/transient-state
features
modulating
excitation
modes.
Remarkably,
transparent
exhibits
efficient
white
photoluminescence
(quantum
yield
>97%),
blue
emission
with
long
afterglow
(duration
>9
h),
high-brightness
self-reproducible
violet-blue
mechanoluminescence.
These
findings
reveal
exceptional
capability
low-dimensional
integrating
various
luminescence,
offering
exciting
opportunities
multi-level
data
encryption
all-in-one
authentication
technologies.
Advanced Optical Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 8, 2025
Abstract
In
this
study,
heterostructured
nanoparticles
based
on
lanthanide
double
perovskite
halide
are
innovatively
proposed,
which
dramatically
improved
quantum
yield
and
color
purity,
but
the
problem
of
water
stability
materials
has
also
been
solved.
The
without
surface
ligands
have
excellent
optical
properties
when
dispersed
in
water,
higher
purity
than
those
organic
solvents.
Besides,
application
potential
is
demonstrated
practical
performance
verified
by
preparing
luminescent
ink.
This
study
provides
a
new
strategy
for
enhancement
prospect
perovskite.
Abstract
The
exceptional
optoelectronic
properties
of
lead
halide
perovskite
nanocrystals
(PeNCs)
in
the
ultraviolet
and
visible
spectral
regions
have
positioned
them
as
a
promising
class
semiconductor
materials
for
diverse
photovoltaic
applications.
However,
their
limited
response
to
near‐infrared
(NIR)
light
due
intrinsic
bandgap
(>1.5
eV)
has
hindered
applications
many
advanced
technologies.
To
circumvent
this
limitation,
it
is
fundamental
significance
integrate
PeNCs
with
lanthanide‐doped
upconversion
nanoparticles
(UCNPs)
that
are
capable
efficiently
converting
low‐energy
NIR
photons
into
high‐energy
photons.
By
leveraging
energy
transfer
from
UCNPs
PeNCs,
synergistic
combination
can
not
only
expand
responsivity
range
but
also
introduce
novel
emission
profiles
luminescence
multi‐dimensional
tunability
(e.g.,
wavelength,
lifetime,
polarization)
under
low‐to‐medium
power
irradiation,
which
breaks
through
inherent
restrictions
individual
thereby
opens
up
new
opportunities
device
engineering.
In
review,
we
focus
on
latest
advancements
development
PeNCs‐UCNPs
nanocomposites,
an
emphasis
controlled
synthesis
optical
design
such
full‐spectrum
solar
cells,
photodetectors,
multilevel
anticounterfeiting.
Some
future
efforts
prospects
toward
active
research
field
envisioned.
Abstract
Herein,
we
synthesized
Cr
3+
/Ln
(Er
,
Tm
)‐codoped
rare
earth‐based
Cs
2
NaScCl
6
double
perovskite,
and
the
near‐infrared
emission
of
Ln
can
be
excited
by
visible
light
through
energy
transfer
(ET)
from
to
.
Moreover,
there
are
two
independent
bands,
which
stems
4
T
→
A
transition
(970
nm)
f‐f
(1542
nm
for
Er
1220
),
respectively.
Particularly,
both
compounds
have
ultra‐high
photoluminescence
quantum
yield
(PLQY)
60%
10%Cr
/6%Er
‐codoped
emission:
∼26%)
68%
/4.5%Tm
(Tm
∼56%),
attributed
ET
efficiency
similar
ionic
activity
Sc
allowing
more
dopants
enter
host
lattice.
Considering
excellent
stability
samples,
demonstrated
/Tm
in
applications
imaging
night
vision.
Finally,
reported
/9%Er
‐tridoped
further
applied
it
optical
thermometry.
image
Abstract
Rare‐earth
halide
double
perovskites
(DPs)
have
attracted
extensive
attention
due
to
their
excellent
optoelectronic
performance.
However,
the
correlation
between
luminescence
performance,
crystal
structure,
and
temperature,
as
well
inherent
energy
transfer
mechanism,
is
not
understood.
Herein,
Lanthanide
ions
(Ln
3+
:
Nd
or
Dy
)
co‐dopants
are
incorporated
into
Sb
doped
Cs
2
NaYbCl
6
DPs
construct
(ET)
models
reveal
effects
of
temperature
levels
rare
earth
on
ET.
The
different
excited
state
structures
‐Ln
at
temperatures
relative
positions
synergistically
determine
physical
processes
luminescence.
These
multi‐mode
luminescent
materials
exhibit
good
performance
in
anti‐counterfeiting,
NIR
imaging,
sensing.
This
work
provides
new
insights
mechanism
related
photophysical
process.
Inorganic Chemistry Frontiers,
Год журнала:
2024,
Номер
11(9), С. 2784 - 2797
Опубликована: Янв. 1, 2024
By
adjusting
the
phonon
energy
of
host
crystal
(Ca
2+
/Sr
/Ba
)
LaLiTeO
6
:Yb
3+
,
Tm
phosphor,
combined
with
cross-relaxation
phenomenon,
a
high-sensitivity
thermometer
for
dual-mode
temperature
measurement
was
constructed.
Advanced Optical Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 8, 2025
Abstract
The
ever‐increasing
counterfeiting
issues
have
triggered
a
research
upsurge
in
multi‐modal
fluorescence
anti‐counterfeiting
materials.
All
inorganic
metal
halide
double
perovskites
possess
the
advantages
of
facile
preparation
procedures
and
high
thermal
stability,
which
also
provide
suitable
doping
sites
to
regulate
emission
behavior
highlight
potential
for
serving
as
Herein,
series
Sb
3+
,
Er
Yb
solely
or
codoped
Cs
2
NaLuCl
6
are
successfully
prepared,
optical
properties
dependent
on
ratio
lanthanide
ions
(Ln
).
Notably,
due
participation
energy‐transfer
cross‐relaxation
processes,
tri‐doped
(0.3%Sb
‐20%Er
‐50%Yb
‐Cs
)
shows
luminescence
responses
excitation
sources
with
different
photon
energies,
is
employed
construct
patterns
by
combining
.
Besides
behavior,
NIR
from
can
be
used
night‐vision
device.
Remarkably,
20%Er
‐doped
an
excellent
light
yield
30767
photons
MeV
−1
low
limit
detection
(LoD)
108
nGy
s
highlighting
X‐ray
imaging.
This
work
provides
rational
route
design
multi‐functional
materials
that
anti‐counterfeiting,
night
vision,
Advanced Optical Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 20, 2025
Abstract
Luminescence
intensity
decreasing
with
rising
temperature
is
a
common
phenomenon
called
thermal
quenching.
However,
the
Bi
3+
‐Eu
co‐doped
NaGd
2
Ga
3
Ge
O
12
(NGGG)
phosphor
exhibits
antithermal
quenching
luminescence
of
Eu
.
has
pair
thermally
coupled
energy
levels
(TCLs),
where
higher
level
P
1
and
lower
derived
from
metal‐to‐metal
charge‐transfer
(MMCT).
As
concentration
increases,
lifetime
decreases,
while
MMCT
remains
unchanged.
It
means
that
transfer
(ET)
only
happens
between
Interestingly,
excited,
emission
still
observed.
This
because
when
exciting
level,
as
upper
TCLs,
can
also
be
which
consequently
leads
to
Accordingly,
⁺
will
increased
show
coupling
process
enhanced
temperature.
Taking
advantage
unique
ET
⁺,
⁺‐Eu
NGGG
demonstrates
sensitivity
2.08%
K
−
¹
at
500
K,
distinct
most
fluorescence
thermometers
maximum
low
temperatures.
