Advanced Optical Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 29, 2024
Abstract
Doping
lanthanide
ions
in
double
perovskites
(DPs)
offers
a
promising
approach
to
tailor
optical
and
optoelectronic
properties
for
versatile
applications.
However,
achieving
efficient
thermal
stable
DPs
remains
significant
challenge.
In
this
paper,
series
of
Cs
2
KInCl
6
:Yb
3+
,Er
with
negative
quenching
behavior
high
sensitivity
are
fabricated.
The
intrinsic
luminescence
studied
broad
self‐trapped
excitons
(STEs)
emission
peak
at
500
nm,
which
can
be
enhanced
by
doping
Er
accompanied
greater
distortion
the
[InCl
]
3−
octahedrons
as
well
multiple
characteristic
modes
under
ultraviolet
near‐infrared
excitation.
Notably,
addition
sensitizer
Yb
leads
up‐conversion
(up‐conversion
quantum
yield
up
1.66%),
anti‐thermal
performance
brought
phonon‐assisted
energy
transfer
process,
reproducibility
based
on
fluorescence
intensity
ratio
technology.
This
work
provides
an
effective
strategy
enhance
STEs
achieve
temperature
sensors
through
doping.
Abstract
Lead‐free
halide
double
perovskites
are
rapidly
gaining
prominence
as
a
nontoxic,
highly
stable,
and
versatile
alternative
to
traditional
lead‐based
perovskites,
notable
for
their
superior
optoelectronic
properties.
Among
these,
rare‐earth‐based
(RHDPs)
notably
stand
out.
Comprising
fifteen
lanthanide
elements
with
distinctive
electron
configurations
of
[Xe]
4f
n−1
5d
0−1
6s
2
(
n
=
1–15),
alongside
the
group‐IIIB
Yttrium
(Y)
Scandium
(Sc),
rare‐earth
(RE)
exhibit
great
potential.
These
17
RE
ions
(Sc
3+
,
Y
La
–Lu
)
offer
vast
landscape
crafting
numerous
RHDPs,
poised
properties
that
surpass
diversify
beyond
current
perovskite
standards.
Key
functionality
unique
luminescence
driven
by
self‐trapped
exciton
(STE)
recombination,
4f→4f
5d→4f
transitions,
enabling
applications
in
visible
infrared
light
emission
through
downshifting
up‐conversion.
This
review
thoroughly
articulates
foundational
including
structural‐property
relationships,
synthesis
methods,
optical
characteristics,
durability.
It
highlights
recent
advancements
across
range
fields
such
near‐infrared
emitting
diodes
(Vis&NIR
LEDs),
sensors,
anti‐counterfeiting
technologies.
Additionally,
discusses
prevailing
challenges
associated
RHDP
materials
applications,
offering
insights
future
directions.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 17, 2024
Abstract
Given
the
extensive
application
of
near‐infrared
(NIR)
emission,
quest
for
efficient
and
versatile
NIR
semiconductors
have
attracted
tremendous
attention.
Leveraging
trivalent
rare
earth
(RE
3+
)
ions
doping,
integration
metal
halide
perovskites
with
RE
makes
it
easy
to
achieve
NIR‐II
emission
(1000–1700
nm).
However,
although
showing
promise
in
bioimaging,
optical
communication,
night
vision,
enhancing
intensity
promote
further
progress
real‐world
applications
remains
a
challenge.
This
review
summarizes
recent
advancements
ion‐doped
perovskite
semiconductors,
discusses
what
kind
properties
are
needed
how
desired
various
applications.
The
starts
synthesis
methods
material
types
rich
examples.
Following
this,
mechanisms
strategies
optimizing
luminescence
performance
discussed
detail.
Furthermore,
highlights
their
multifunctional
both
as
an
electrically
driven
emitter
light‐emitting
diodes
(LEDs)
down‐conversion
photovoltaic
devices
(PVs)
or
phosphor‐converted
LEDs
(pc‐LEDs).
Finally,
insights
on
fill
gap
between
current
research
future
goals
provided.
aims
provide
deeper
understanding
materials,
exploration
emitters.
Journal of Materials Chemistry C,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 9, 2024
This
review
systematically
summarized
the
synthesis
approaches
towards
both
polycrystals
and
nanocrystals,
discussed
crystal/electronic
structure,
luminescence
principle,
optimized
strategies
of
lanthanide-based
Cs
3
LnCl
6
metal
halides.
Advanced Optical Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 29, 2024
Abstract
Doping
lanthanide
ions
in
double
perovskites
(DPs)
offers
a
promising
approach
to
tailor
optical
and
optoelectronic
properties
for
versatile
applications.
However,
achieving
efficient
thermal
stable
DPs
remains
significant
challenge.
In
this
paper,
series
of
Cs
2
KInCl
6
:Yb
3+
,Er
with
negative
quenching
behavior
high
sensitivity
are
fabricated.
The
intrinsic
luminescence
studied
broad
self‐trapped
excitons
(STEs)
emission
peak
at
500
nm,
which
can
be
enhanced
by
doping
Er
accompanied
greater
distortion
the
[InCl
]
3−
octahedrons
as
well
multiple
characteristic
modes
under
ultraviolet
near‐infrared
excitation.
Notably,
addition
sensitizer
Yb
leads
up‐conversion
(up‐conversion
quantum
yield
up
1.66%),
anti‐thermal
performance
brought
phonon‐assisted
energy
transfer
process,
reproducibility
based
on
fluorescence
intensity
ratio
technology.
This
work
provides
an
effective
strategy
enhance
STEs
achieve
temperature
sensors
through
doping.
