Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 12, 2024
Abstract
The
chemical
property
of
the
buried
interface
plays
a
crucial
role
in
improving
performance
and
stability
perovskite
solar
cells
(PSCs).
SnO
2
/perovskite
prepared
from
alkaline
hydrogel
with
high
proton
affinity
triggers
directional
migration
irreversible
reactions
protons,
exacerbating
disintegration
crystal.
In
this
study,
we
proposed
precompensation
strategy
to
suppress
deprotonation
effect
improve
durability
devices.
By
modulating
environment
surface
energy
state
interface,
domain‐limiting
spontaneous
compensation
protons
formamidinium
(FA
+
)
under
coulomb
force
were
achieved,
thereby
stabilizing
crystal
structure.
target
films
UV
illumination
heating
at
85
°C
was
significantly
enhanced.
As
result,
devices
can
retain
around
90
%
their
initial
power
conversion
efficiency
(PCE)
after
1000
h
continuous
irradiation
maximum
point
(MPP).
Moreover,
due
reduction
defect
content
improvement
conductivity
carrier
mobility
by
treatment,
interfacial
loss
non‐radiative
recombination
substantially
diminished.
PSC
exhibited
much
higher
PCE
25.55
than
control
(23.03
%).
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 5, 2025
Abstract
The
complete
phase
transition
from
DMAPbI
3
and
Cs
4
PbI
6
intermediates
to
the
final
CsPbI
perovskite
is
pivotal
for
fabricating
high‐quality
inorganic
films.
In
this
study,
reaction
energy
barrier
between
sought
be
reduced
by
increasing
their
surface
energy,
where
a
perfluorinated
compound
designed
using
DFT
modeling
saturate
of
effectively
prevent
crystalline
growth.
Consequently,
smaller
with
ultrahigh
react
more
energetically
facilitate
rapid
conversion
desired
phase.
It
found
that
resultant
shows
improved
crystallinity
morphology,
as
demonstrated
suppressed
non‐radiative
recombination
prolonged
carrier
lifetimes.
As
result,
optimized
solar
cells
(PSCs)
achieve
power
efficiency
(PCE)
over
20%,
along
significantly
light
thermal
stability.
This
work
provides
way
regulate
crystallization
dynamics
advanced
quality
perovskites.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 15, 2025
Abstract
Formamidinium
(FA)‐based
Sn‐Pb
perovskite
demonstrates
superior
thermal
stability,
making
it
well‐suited
for
all‐perovskite
tandem
solar
cells.
However,
the
uncontrolled
crystallization
process
remains
a
significant
challenge.
In
this
study,
an
effective
strategy
is
presented
to
regulate
of
FA‐based
by
incorporating
perfluoroanionic
surfactant
(perfluorohexanesulfonic
acid
potassium
salt,
F
13
C
6
SO
3
K)
into
precursor.
The
multifunctional
sites
K,
including
atoms
and
−
groups,
interact
with
components
stabilize
colloidal
distribution
precursor
modulate
kinetics.
This
results
in
high‐quality
films
fewer
defects.
Consequently,
cell
(PSC)
achieves
champion
efficiency
24.33%,
open‐circuit
voltage
0.895
V
fill
factor
83.2%.
After
continuous
heating
at
65
°C
1008
h,
still
maintain
91%
its
initial
efficiency,
which
shows
enhanced
stability.
When
coupled
wide‐bandgap
subcell,
reaches
power
conversion
(PCE)
27.57%.
Commercial
SnO2
nanocrystals
used
for
producing
electron
transporting
layers
(ETLs)
of
perovskite
solar
cells
(PSC)
are
prone
to
aggregation
at
room
temperature
and
contain
many
structural
defects.
Herein,
we
report
that
the
LiOH
additive
can
simultaneously
delay
donate
beneficial
aging
effect
nanocrystals.
The
resulting
ETLs
show
desired
characteristics,
including
a
broadened
absorption
range,
reduced
defects,
improved
properties,
decreased
work
function.
Meanwhile,
Cs0.15FA0.65MA0.20Pb(I0.80Br0.20)3
films
with
wide
bandgap
1.68
eV
grown
on
them
exhibit
pure
phase,
higher
crystallinity,
fewer
better
buried-interface
contact,
more
aligned
energy
levels
each
other
than
ones
based
without
treatment.
Hence,
average
efficiencies
boosted
from
(18.79
±
0.40)%
(20.16
0.36)%
wide-bandgap
PSCs,
wherein
champion
efficiency
21.12%
is
achieved.
In
addition,
as-obtained
PSCs
possess
good
thermal
humidity
stability.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 5, 2024
Abstract
The
interfacial
management
in
perovskite
solar
cells
(PSCs),
including
mitigating
the
carrier
transport
barrier
and
suppressing
non‐radiative
recombination,
still
remains
a
significant
challenge
for
efficiency
stability
enhancement.
Herein,
by
screening
family
of
fluorine
(F)
terminated
dual‐site
organic
dipole
molecules,
study
aims
to
gain
insight
into
molecular
array
toward
tunable
field.
Both
experimental
theoretical
results
reveal
that
these
functional
molecules
can
effectively
anchor
on
surface
through
Lewis
acid‐base
interaction.
In
addition,
tailored
side‐chain
with
F
atoms
allows
altering
constructing
well
matched
perovskite/Spiro‐OMeTAD
contact.
As
result,
inserting
modulates
interface
deliver
gradient
energy
level
alignment,
facilitating
extraction
transport.
optimal
trifluoro‐methanesulfonamide
mediated
N‐i‐P
PSCs
achieve
highest
25.47%,
together
enhanced
operational
under
1000
h
simulated
1‐sun
illumination
exposure.
These
findings
are
believed
provide
design
sufficient
tunability
perovskite‐based
optoelectronic
devices.
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 3, 2025
Abstract
Uncontrolled
deposition
of
tin
oxide
(SnO
2
)
colloidal
nanoparticles
and
perovskite
precursors
poses
challenges
for
improving
the
efficiency
stability
solar
cells
(PSCs).
Modifying
electron
transport
layer
(ETL)
can
both
enhance
its
own
performance
influence
crystallization
kinetics
upper
layer.
This
study
incorporates
chain‐like
surfactants
with
spatially
opposite
charges
ETL
modification.
It
is
found
that
molecular
conformational
changes
induced
by
flexibility
carbon
chain
lead
to
collapse
urchin‐like
structure,
impacting
passivation
effect
SnO
deposition.
Due
more
stable
conformation
short‐chain
surfactant,
fully
extended
chains
in
micelles
form
a
establishing
stronger
aggregation
barrier
ensures
uniform
The
ordered
distribution
molecules
allows
functional
groups
be
exposed
on
surface
facilitates
interlayer
approach
enhances
across
layers,
alleviates
interfacial
tensile
stress,
promotes
contact,
extends
processing
window
perovskite,
thereby
ensuring
high‐performance
PSCs.
Ultimately,
an
optimized
substrate
strategy
increases
PSC
device
from
22.21%
24.12%,
greatly
improves
unencapsulated
under
various
conditions,
providing
new
option
modification
engineering.
The Journal of Chemical Physics,
Journal Year:
2025,
Volume and Issue:
162(11)
Published: March 17, 2025
The
most
efficient
perovskite
solar
cells
(PSCs)
are
currently
developed
using
antisolvent-based
fabrication
technology.
Despite
extensive
analysis
of
various
aspects
the
antisolvent
method—such
as
type
antisolvent,
dropping
time,
and
precursor
compatibility—some
antisolvents
still
produce
uneven
film
surface
morphology
on
centimeter-scale
substrates.
decoupling
relationship
between
local
structural
characteristics,
such
grain
boundaries
defects,
optoelectronic
performance
PSCs
is
one
highly
regarded
research
issues
in
field.
In
this
study,
we
utilized
high-resolution
white
light
interferometry
to
characterize
morphological
distributions
films
from
center
edge,
anisole
an
example
antisolvent.
We
observed
that
macro
cracks
at
typically
exhibit
dense
ridge
morphology,
while
toward
edges
display
a
concave
morphology.
analyze
stress
mechanism
by
EDS
mapping
AFM
detail,
attributing
phenomenon
competitive
attachment
2D
islands
for
adatoms,
which
influenced
changes
size.
devices
different
locations
were
fabricated
their
analyzed.
Our
findings
indicate
these
protruding
do
not
significantly
affect
current
voltage
photovoltaic
device;
however,
lead
decrease
device
fill
factor.
attribute
enhanced
carrier
recombination
interface
due
This
study
provides
valuable
insights
into
formation
under
treatment
performance.
