Lead
halide
perovskite
nanocrystal
materials
such
as
CsPbX3
(X
=
Cl,
Br,
and
I)
have
triggered
an
intense
research
upsurge
due
to
their
excellent
scintillation
performance.
Herein,
in
situ
crystallization
strategy
is
developed
grow
CsPbBr3
nanocrystals
(NCs)
within
a
low-melting-point
(280
°C)
coordination
polymer
(CP)
glass.
The
viscosity
of
glass
reduced
through
low-temperature
(e.g.,
50
thermal
treatment,
enabling
the
short-distance
migration
uniformly
dispersed
ions
(Cs+,
Pb2+,
Br-)
achieve
NCs.
Benefiting
from
high
transmittance
(80%
500-800
nm
range)
outstanding
performance,
prepared
CsPbBr3@ZnBr2(bIm+DMSO)2
(bIm
benzimidazole,
DMSO
dimethyl
sulfoxide)
transparent
luminescence
exhibits
X-ray
imaging
resolution
up
25
lp/mm,
outperforming
many
crystalline
scintillators.
This
work
would
provide
idea
for
development
high-resolution
screens
that
can
be
at
low
temperatures.
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.
Abstract
The
toxicity
of
heavy‐metal
Pb
and
instability
lead‐based
halide
perovskite
nanomaterials
are
main
factors
to
impede
their
practical
applications
in
the
fields
solar
cells,
LEDs
scintillators.
In
this
paper,
all
inorganic
lead‐free
cesium
manganese
nanocrystals
synthesized
glass
for
first
time.
Red
photoluminescence
with
broad
PL
band,
negligible
self‐absorption
a
high
quantum
yield
41.8%
is
obtained.
addition,
modulating
component
can
change
Mn
2+
ions
coordination
environment
obtain
tunable
from
red
green.
More
importantly,
embedded
glasses
exhibit
outstanding
long‐term
stabilities.
Theses
also
highly
stable
against
energy
irradiation
efficient
radioluminescence,
making
them
promising
high‐resolution
X‐ray
imaging.
These
results
demonstrate
that
eco‐friendly
candidates
light‐emitting
diodes
Advanced Materials,
Год журнала:
2023,
Номер
36(3)
Опубликована: Ноя. 27, 2023
The
ever-growing
need
to
inspect
matter
with
hyperfine
structures
requires
a
revolution
in
current
scintillation
detectors,
and
the
innovation
of
scintillators
is
revived
luminescent
metal
halides
entering
scene.
Notably,
for
any
scintillator,
two
fundamental
issues
arise:
Which
kind
material
suitable
what
form
should
exist?
answer
former
question
involves
sequence
certain
atoms
into
specific
crystal
that
facilitate
conversion
X-ray
light,
whereas
latter
assembling
these
crystallites
particular
forms
can
guide
light
propagation
toward
its
corresponding
pixel
detector.
Despite
their
equal
importance,
efforts
are
overwhelmingly
devoted
improving
X-ray-to-light
conversion,
while
material-form-associated
propagation,
which
determines
optical
signal
collected
imaging,
largely
overlooked.
This
perspective
critically
correlates
reported
spatial
resolution
light-propagation
behavior
each
halides,
combing
designing
rules
future
development.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(26)
Опубликована: Фев. 25, 2024
Abstract
Copper
halides,
a
new
class
of
attractive
and
potential
scintillators,
have
attracted
tremendous
attention
in
X‐ray
imaging.
However,
the
ambiguity
surrounding
their
exciton
properties
unclear
effect
crystal
structure
on
photophysical
performance
hinder
an
in‐depth
understanding
luminescence
mechanism
further
application
imaging
field.
Herein,
copper
halide
scintillators
Cs
3
Cu
2
X
5
(X
=
I,
Br,
Cl)
with
0D
is
prepared,
are
revealed
using
both
theoretical
calculation
experimental
verification.
The
small
Bohr
diameter
together
high
binding
energy
can
cause
to
hold
strongly
confined
excitons
lack
quantum‐size
effects.
materials
exhibit
structural
framework
soft
lattice
Frenkel
strong
confinement
effects,
resulting
self‐trapped
excitons.
In
particular,
I
demonstrated
as
efficient
scintillator
radioluminescence
efficiency
spatial
resolution
≈106
µm
radiography,
which
primarily
attributed
improve
radiative
recombination
probability
electron‐hole
pairs.
Overall,
this
work
provides
pathway
for
developing
performance.
Advanced Materials Technologies,
Год журнала:
2024,
Номер
9(20)
Опубликована: Май 26, 2024
Abstract
Metal
halide
perovskites
are
revolutionizing
X‐ray
detection
through
a
combination
of
low
cost,
solution
processing,
favorable
optoelectronic
properties,
and
high
stopping
power
for
high‐energy
ionizing
radiation.
While
perovskite
single
crystals
polycrystalline
wafers
considered
direct
converters,
most
medical
applications
based
on
scintillators
that
shift
radiation
into
the
visible.
Several
materials
market,
but
demonstrations
CsPbBr
3
nanocrystals,
possibly
embedded
in
matrix
material
or
combined
with
organic
molecules
as
luminescent
species,
highlight
their
competitiveness
established
terms
radioluminescence
yield
transient
behavior.
Major
hurdles
nanocrystal
must
overcome
environmental
stability
toxicity.
there
still
few
examples
high‐performance
lead‐free
scintillators,
microcrystalline
emerging
promising
reduced
toxicity,
significant
Stokes
shifts
to
avoid
reabsorption
emission
thick
films.
Thus,
near
future
scintillator
will
primarily
be
adoption
recipes
proven
properties
form.
The
colloidal
solutions
facilitate
large‐scale
printing
homogeneous
scattering‐free
films
obtain
contrast
spatial
resolution
images
by
scintillation.
The Journal of Physical Chemistry Letters,
Год журнала:
2023,
Номер
14(38), С. 8577 - 8583
Опубликована: Сен. 19, 2023
Inorganic
halide
double
perovskite
(DP)
nanocrystals
(NCs)
have
attracted
great
attention
because
of
their
nontoxicity,
mild
reaction
conditions,
good
stability,
and
excellent
optical
optoelectronic
properties.
Herein,
we
prepare
the
inorganic
terbium
DP
Cs2BTbCl6
(B
=
Na
or
Ag)
NCs
with
bright
green
photoluminescence
(PL)
emission.
The
Na–Tb-based
exhibit
better
PL
properties
compared
Ag–Tb-based
NCs,
which
is
due
to
Cs2NaTbCl6
having
a
more
localized
charge
carrier
distribution
on
[TbCl6]3–
octahedron.
incorporation
Sb3+
dopant
in
can
construct
efficient
energy
transfer
process,
resulting
doubling
efficiency.
Furthermore,
Cs2NaTbCl6:
possess
X-ray
scintillating
performance
low-dose
detection
limit
140
nGyair/s,
nearly
5
times
sensitive
than
undoped
NCs.
optimized
show
application
prospects
imaging.
This
work
helps
deepen
understanding
luminescence
mechanism,
excited
state
dynamics,
scintillation
property
Tb-based
Abstract
Metal
halide
perovskites
with
excellent
optical
and
electronic
properties
have
become
a
trending
material
in
the
current
research.
However,
their
limited
stability
under
ambient
conditions
degrades
quality
threatens
potential
commercialization
as
optoelectronic
devices.
Various
approaches
are
adopted
to
improve
of
perovskite
nanocrystals
(PeNC)
while
maintaining
advantageous
properties,
particularly
strong
luminescence.
Among
different
possible
improvement
strategies,
encapsulation
PeNCs
within
amorphous
glass
matrices
inorganic
oxides
has
drawn
widespread
attention
because
it
ensures
high
resistance
against
chemical
corrosion
temperature,
thus
enhancing
chemical,
thermal,
mechanical
improved
light‐emission
characteristics.
In
this
article,
two
types
materials,
namely
all‐inorganic
metal
oxide
glasses
briefly
introduced,
then
methods
reviewed
fabricate
PeNC@glass
composites.
These
classified
into
three
universal
categories:
compositional
modification,
structural
dual
encapsulation.
final
part
review
paper,
examples
applications
PeNCs@glass
composites
light‐emitting
devices
displays,
data
storage
anti‐counterfeiting,
lasing,
photodetectors
X‐ray
detectors,
photocatalysis,
filters,
solar
concentrators,
batteries
provided.
