The
all-inorganic
lead
halide
perovskite
nanomaterials
have
garnered
significant
attention
due
to
their
exceptional
optoelectronic
properties,
establishing
them
as
one
of
the
most
promising
materials
in
field
photonics.
However,
there
is
still
a
lack
comprehensive
comparative
research,
particularly
realm
optical
characteristics,
such
photoluminescence
(PL),
among
various
dimensions
nanomaterials.
In
this
work,
we
successfully
fabricated
CsPbBr3
nanorods
(NRs),
nanoplates
(NSs),
and
nanosheets
(NPLs)
through
colloid
synthesis
hydrothermal
methods,
resulting
uniform
morphologies
excellent
crystallinity.
A
exploration
properties
has
been
undertaken.
As
nanomaterial
transitions
from
one-dimensional
NRs
NSs,
culminating
production
larger
NPLs,
conspicuous
redshift
its
emission
spectrum
(485-530
nm)
emerges.
This
observation
signifies
marked
disparities
characteristics
across
varying
dimensions.
findings
suggest
that
during
transition
defects
NPLs
significantly
diminish,
eliminating
portion
non-radiative
recombination
pathways.
underscores
greater
potential
value
larger-sized
devices.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: May 28, 2024
Abstract
Halide
perovskites
have
garnered
significant
attention
for
their
unique
optoelectronic
properties
in
solar‐to‐fuel
conversions.
However,
the
efficiency
of
halide
field
photocatalytic
CO
2
reduction
is
largely
limited
by
serious
charge
recombination
and
a
lack
efficient
active
sites.
In
this
work,
rubidium
(Rb)
doped
Cs
AgBiBr
6
(Rb:CABB)
hierarchical
microsphere
developed
reduction.
Experimental
theoretical
analysis
discloses
that
partially
substituting
Rb
+
Ag
can
effectively
modulate
electronic
structure
CABB,
favoring
separation
making
adjacent
Bi
atoms
an
electron‐rich
site.
Further
investigations
indicated
doping
also
reduces
energy
barriers
rate‐determining
step
As
result,
Rb:CABB
demonstrated
enhanced
yield
compared
to
its
undoped
counterpart.
This
work
presents
promising
approach
optimizing
structures
photocatalysts
paving
new
way
exploring
Journal of Materials Chemistry C,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
High-purity
CsPbBr
3
perovskite
nanocrystals
(NCs)
and
nanowires
(NWs)
had
been
synthesized
using
a
hot-injection
method
within
an
amine-rich
environment.
The Journal of Chemical Physics,
Journal Year:
2025,
Volume and Issue:
162(11)
Published: March 17, 2025
Mixed
halide
inorganic
perovskites
exhibit
exceptional
stability
and
photovoltaic
performance
are
considered
to
be
promising
materials.
However,
the
chemical
diversity
of
these
materials
presents
a
vast
screening
space,
making
it
challenging
efficiently
identify
high-performance
solely
through
theoretical
calculations
or
experiments.
To
address
this
challenge,
in
work,
we
introduce
multidimensional
high-throughput
strategy
that
combines
machine
learning
with
first-principles
calculations,
specifically
designed
MHIPs
optimal
bandgap
light
absorption
properties.
The
models
have
achieved
determination
coefficients
(r2)
0.9896
0.9833,
root
mean
square
errors
0.1890
eV
0.2190
105
·
cm−1,
respectively,
demonstrating
high
precision
reliability
models.
In
present
generation
306
521
candidate
mixed
B-site
elements
is
reported,
leading
successful
identification
295
ideal
characteristics
for
via
screening.
Subsequently,
an
in-depth
density
functional
theory
validation
conducted
on
20
research
results
demonstrate
Cs2AgBi0.5Sb0.25Ir0.25I6
CsSn0.75Ge0.25I3
outstanding
performance,
them
most
practical
applications.
These
fully
confirm
scientific
validity
effectiveness
our
strategy,
laying
solid
foundation
exploration
optimization
perovskite
solar
cell
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: April 3, 2025
Lead-free
double
perovskite
Cs2AgBiX6
(X
=
Cl
or
Br),
as
an
environmentally
friendly
alternative
to
lead-based
perovskite,
has
recently
received
much
attention
due
its
excellent
optoelectronic
properties
and
potential
applications.
In
this
study,
Li+
doped
Cs2AgBiCl6
crystals
are
synthesized
by
heat-assisted
solution
evaporation.
The
crystal
structure
characteristics,
component
analysis
optical
performances
investigated
experimentally.
Theoretically,
the
influence
of
doping
on
band
density
state
is
explored
further
using
functional
theory
(DFT).
It
found
that
obtained
Cs2LixAg1-xBiCl6
exhibit
typical
structure,
induces
slight
lattice
contraction
accompanied
with
partial
substitution
Ag+,
improves
photoluminescence
(PL)
emission.
Additionally,
theoretical
calculation
indicates
can
make
gap
increase,
introduce
deep
energy
levels
into
valence
(VB)
conduction
(CB),
meanwhile
probably
change
transition
route
allowed
radiative
recombination.
These
lead-free
materials
have
applications
in
devices
their
improved
properties.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: June 26, 2024
Abstract
Lead-free
halide
double
perovskite
Cs
2
AgInCl
6
has
been
extensively
studied
in
recent
years
due
to
the
lead
toxicity
and
poor
stability
of
common
perovskites.
In
this
study,
sodium
(Na
+
)
bismuth
(Bi
3+
doped
into
perovskite,
then
Ag
1−
x
Na
1
−
y
Bi
Cl
films
with
broadband
warm-yellow
emissions
were
achieved
by
blade
coating
method.
Herein,
content
changed
as
variables
at
a
series
parameter
optimization
experiments,
respectively.
systems,
broke
parity-forbidden
transition
,
suppressed
non-radiative
recombination.
The
partial
replacement
ions
doping
cations
crucial
for
increasing
intensity
PL
emission.
experimental
results
showed
that
photoluminescence
quantum
yield
0.4
0.6
0.8
0.2
film
was
66.38%,
which
highest
data
among
all
samples.
It
demonstrated
remarkable
under
heat
ultraviolet
conditions.
After
five
thermal
cycles,
is
only
reduced
approximately
5.7%
initial
value.
720
h
continuous
irradiation,
there
occurred
31.9%
emission
decay
film.
