Synthesis, Structure, and Optoelectronic Properties of a Hybrid Organic–Inorganic Perovskite with a Monoethanolammonium Cation MAxMEA1−xPbI3
Nanomaterials,
Год журнала:
2025,
Номер
15(7), С. 494 - 494
Опубликована: Март 26, 2025
Hybrid
organic–inorganic
perovskites
have
emerged
as
promising
materials
for
next-generation
optoelectronic
devices
owing
to
their
tunable
properties
and
low-cost
fabrication.
We
report
the
synthesis
of
3D
hybrid
with
monoethanolammonium
cations.
Specifically,
we
investigated
morphological
characteristics
polycrystalline
films
MAxMEA1−xPbI3,
which
contain
methylammonium
(MA)
(MEA)
MAxMEA1−xPbI3
crystallizes
in
a
tetragonal
perovskite
structure.
The
substitution
cations
ions
led
an
increase
lattice
parameters
bandgap
energy.
Energy
level
diagrams
synthesized
samples
were
also
constructed.
MA0.5MEA0.5PbI3
makes
it
material
use
tandem
solar
cells.
These
films,
namely
MA0.25MEA0.75PbI3
fabricated
using
one-step
spin-coating
method
without
antisolvent.
exhibit
uniform
surface
morphology
under
specified
deposition
parameters.
Within
scope
this
study,
no
evidence
dendritic
structures
or
pinhole-type
defects
observed.
All
demonstrated
photocurrent
generation
visible
light
illumination.
Moreover,
reduced
hysteresis
I–V
characteristics,
indicating
improved
device
stability.
Язык: Английский
Low-Dimensional Ligand-Driven Design of 2D/3D Perovskite Heterojunctions: Achieving Mitigated Nonradiative Recombination and Robust Stability for Next-Generation Solar Cells
Nano Letters,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 5, 2025
Achieving
efficient
and
stable
perovskite
solar
cells
(PSCs)
is
challenging
due
to
nonradiative
recombination,
ion
migration,
film
instability.
This
study
designs
low-dimensional
(LD)
ligands─benzimidazole
(BIZ),
1H-benzimidazole,
6-methyl-,
(6-MeBIm),
6-(trifluoromethyl)-,
(6-TFBIm)─to
construct
LD/3D
heterojunctions.
Compared
with
BIZ
6-MeBIm
(constructing
1D/3D
heterojunction),
the
2D/3D
heterojunction
constructed
by
6-TFBIm
successfully
passivated
different
defects,
resulting
in
a
significant
reduction
recombination
improved
carrier
transport,
leading
power
conversion
efficiency
(PCE)
of
25.25%,
outperforming
control
devices
(PCE:
22.97%).
The
PSCs
exhibit
superior
humidity
thermal
stability,
maintaining
structural
integrity
under
harsh
conditions.
These
results
underscore
role
tailored
LD
ligands
optimizing
quality,
charge
paving
way
for
high-performance
durable
PSCs.
Язык: Английский
Metal-Enhanced Photoluminescence in Perovskite Quantum Dots-hBN-Gold Film Mixed-Dimensional van der Waals Heterostructure
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 29, 2025
All-inorganic
cesium
lead
halide
perovskite
quantum
dots
(QDs)
have
emerged
as
promising
materials
for
next-generation
optoelectronic
devices
due
to
their
exceptional
photoluminescence
(PL)
properties,
including
high
yields
and
narrow
emission
line
widths.
However,
unlocking
full
potential
requires
innovative
strategies
further
enhance
precisely
tune
fluorescence
efficiency.
In
this
work,
we
present
a
novel
0D-2D-3D
mixed-dimensional
van
der
Waals
(vdW)
heterostructure
comprising
CsPbBr3
QDs,
multilayer
hexagonal
boron
nitride
(hBN),
gold
(Au)
nanoparticle
film,
achieving
remarkable
7-fold
PL
enhancement.
We
attribute
enhancement
the
synergy
of
plasmon-induced
incident
electromagnetic
field
an
increased
spontaneous
rate
via
Purcell
effect,
optimized
by
tuning
hBN
spacer
thickness
26
nm.
This
design
provides
new
insights
into
metal-enhanced
dots,
it
offers
scalable
platform
efficiency
in
future
applications.
Язык: Английский
In Situ Forming a 0D Inorganic Perovskite Capping Layer via a Surface Reconstruction Process for High-Performance Inorganic Perovskite Solar Cells
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Июнь 2, 2025
Inorganic
CsPbX3
perovskite
solar
cells
have
made
great
progress
over
the
past
several
years.
Nevertheless,
vulnerable
surface
of
deteriorates
device
stability
and
impedes
further
development
performance.
Herein,
a
reconstruction
method
is
proposed
to
in
situ
construct
0D
Cs4PbI1.5Br4.5
capping
layer
on
top
3D
CsPbI1.5Br1.5
for
simultaneously
decreasing
defects
promoting
perovskite.
It
found
that
constructing
atop
not
only
remarkably
enhances
but
also
creates
favorable
energy
level
interface
charge
separation.
In
addition,
this
process
causes
secondary
crystallization
perovskite,
improving
quality.
These
features
result
remarkable
reduction
nonradiative
recombination.
As
result,
carbon-based
exhibits
promoted
performance
with
power
conversion
efficiency
up
12.93%.
cell
without
any
encapsulation
maintains
∼94%
original
after
1080
h
aging
under
an
ambient
environment.
Язык: Английский