The Journal of Physical Chemistry Letters,
Journal Year:
2024,
Volume and Issue:
15(36), P. 9255 - 9262
Published: Sept. 3, 2024
Organic–inorganic
halide
perovskite
films,
fabricated
by
using
the
antisolvent
method,
have
garnered
intense
attention
for
their
application
in
high-efficiency
and
stable
solar
cells.
These
films
characteristically
develop
periodic
wrinkled
microstructures.
Previous
research
has
indicated
that
macroscopic
residual
strain
significantly
influences
optoelectronic
behaviors
of
these
films.
However,
detailed
interplay
between
morphology,
distribution,
local
photophysical
properties
at
micro-
nanoscale
not
been
fully
elucidated.
Here,
we
explore
microscopic
morphology–strain–property
relationship
within
employing
correlative
micro-optical
nanoelectrical
microscopy
techniques.
Microphotoluminescence
(PL)
mapping
supplemented
situ
PL
measurements
identifies
a
heterogeneous
spatial
distribution
across
microstructural
hills
valleys.
Additionally,
light-intensity-dependent
photoconductive
atomic
force
reveals
valleys
experiencing
less
compressive
exhibit
lower
conductivity
higher
propensity
ion
migration.
The
findings
underscore
potential
targeted
engineering
to
optimize
performance
longevity
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 5, 2025
Abstract
The
interfaces
of
each
layer
in
perovskite
solar
cells
(PSCs)
have
a
significant
impact
on
the
charge
transfer
and
recombination.
Especially,
interface
between
hole
transport
(HTL)
p‐i‐n
type
PSCs
significantly
affects
contact
characteristics
HTL
perovskite,
hindering
further
improvements
performance
stability.
Herein,
small
molecule
9‐Fluorenylmethoxycarbonyl
chloride
(9‐YT)
is
introduced
as
bridge
for
PSCs,
which
enhances
interaction
self‐assembly
molecules
(SAMs)
perovskite.
conjugated
backbone
9‐YT
can
interact
with
SAM
(MeO‐2PACz)
by
π–π
stacking
reaction.
Moreover,
also
improves
interfacial
through
strong
interactions
where
carbonyl
groups
Cl
atoms
uncoordinated
Pb
2+
layer.
incorporation
demonstrated
to
markedly
enhance
extraction
at
perovskite/hole
interface,
optimize
energy
level
alignment,
mitigate
recombination,
passivate
defects
Finally,
device
treated
achieves
power
conversion
efficiency
(PCE)
24.82%.
At
same
time,
still
maintain
92.6%
original
PCE
after
long‐term
stability
test
1200
h.
The Journal of Physical Chemistry Letters,
Journal Year:
2024,
Volume and Issue:
unknown, P. 10001 - 10008
Published: Sept. 24, 2024
Space-charge-limited
current
(SCLC)
measurements
play
a
crucial
role
in
the
electrical
characterization
of
semiconductors,
particularly
for
metal
halide
perovskites.
Accurate
reporting
and
analysis
SCLC
are
essential
gaining
meaningful
insights
into
charge
transport
defect
density
these
systems.
Unfortunately,
performing
on
perovskites
is
complicated
by
their
mixed
electronic-ionic
conductivity.
This
complexity
led
to
data
often
being
incorrectly
analyzed
using
simplified
models
unsuitable
materials
reported
without
information
about
how
were
performed.
In
light
recently
published
data,
common
challenges
perovskite
addressed,
solutions
discussed
this
paper.
The
applicability
often-used
analytical
models,
overlooked
issues
related
ionic-electronic
conductivity
perovskites,
creating
single-carrier
devices
investigated
drift-diffusion
simulations.
Finally,
guidelines
more
accurate
improved
provided.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 16, 2025
Abstract
The
brittle
buried
interface,
characterized
by
weak
adhesion
to
the
substrate,
numerous
imperfections,
and
unfavorable
strain,
poses
a
significant
challenge
that
impairs
overall
performance
long‐term
stability
of
perovskite
solar
cells
(PSCs).
Herein,
robust
molecular
zipper
is
constructed
through
in
situ
polymerization
self‐assembly
monomer
4‐vinylbenzoic
acid
(VA),
tightly
link
interface
substrate
n‐i‐p
PSCs
with
an
adhesive
strength
as
high
10.77
MPa.
modified
exhibits
improved
morphology,
suppressed
defects,
released
matched
energy
level
alignment.
resulting
deliver
absolute
gain
≥1.67%
champion
power
conversion
efficiency
based
on
both
one‐step
deposition
protocol
two‐step
one,
demonstrating
universality
this
strategy
across
different
film‐processing
scenarios.
unencapsulated
can
retain
94.2%
their
initial
after
550
h
linear
extrapolated
T
90
value
1230
h,
per
ISOS‐L‐2
protocol.
This
work
provides
facile
reinforce
PSCs.
ACS Applied Materials & Interfaces,
Journal Year:
2025,
Volume and Issue:
17(9), P. 14269 - 14277
Published: Feb. 24, 2025
Inverted
perovskite
solar
cells
(PSCs)
have
achieved
great
development,
contributed
by
the
advance
of
self-assembled
monolayer
(SAM)
hole-transporting
layers
(HTLs)
due
to
their
distinctive
molecular
designability.
However,
SAM
HTLs
still
present
challenges
achieving
a
compact
and
ordered
surface,
resulting
in
vacancies
defects
at
interface
as
well
adversely
affecting
growth
perovskites.
In
this
work,
we
propose
micromolecule
postdeposition
process
design
HTL
form
high-quality
perovskites
achieve
highly
efficient
inverted
PSCs.
We
introduce
etidronic
acid
(EA)
fill
reduce
improve
growing
The
EA
can
anchor
substrate
through
P-OH
anchors,
occupying
left
MeO-4PACz,
simultaneously
create
interaction
with
P═O
C-OH
functional
groups.
effectively
fills
reduces
interface,
passivates
perovskites,
facilitates
carrier
transport.
Consequently,
champion
PCE
24.42%
is
for
target
PSCs,
which
much
higher
than
efficiency
(20.08%)
control.
This
research
provides
guided
widely
applicable
strategy
development
further
advances
performance
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 10, 2024
Abstract
The
presence
of
various
defects
within
the
electron
transport
layer
(ETL),
perovskite
(PVK)
layer,
and
their
interfaces
significantly
affects
efficiency,
hysteresis,
stability
solar
cells
(PSCs)
in
n–i–p
structure.
Herein,
a
defect
passivation
strategy
employing
potassium
4‐methoxysalicylate
(MSAK)
is
utilized
to
efficiently
modulate
ETL,
PVK,
ETL/PVK
interface.
functional
groups
−COO−
−OH
MSAK
molecules,
along
with
K
+
cations,
effectively
reduce
tin
oxide
(SnO
2
)
improve
properties.
Importantly,
MSAK‐SnO
provides
favorable
substrate
for
growth
highly
crystallization
dense
layers.
molecules
also
passivate
bottom
interface
PVK
by
coordinating
under‐coordinated
Pb
2+
ions.
Furthermore,
cations
can
migrate
into
further
enhancing
improving
photovoltaic
performance
PSC
devices.
PSCs
fabricated
using
based
on
achieve
remarkable
power
conversion
efficiency
(PCE)
25.47%,
alongside
reduced
hysteresis
enhanced
stability.
After
being
stored
under
ambient
conditions
60
days,
device
maintains
nearly
90%
its
initial
PCE,
whereas
PCE
pristine
decreases
69.7%
after
aging.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 24, 2024
Abstract
Metal
halide
perovskite
with
high
Young's
modulus
is
prone
to
form
cracks
when
subjected
mechanical
stresses
such
as
bending,
twisting,
or
impacting,
ultimately
leading
a
permanent
decline
in
the
performance
of
their
photovoltaic
devices.
These
properties
pose
challenges
durability
long‐term
service
devices
and
production
flexible
To
address
this
issue,
poly
(lipoic
acid‐co‐Styrene)
elastomer
employed
modulate
films.
The
peak
force
quantitative
nanomechanical
atomic
microscopy
measurements
nanoindentation
tests
demonstrated
reduction
modulus,
lower
preventing
formation
defects
during
deformation.
Moreover,
approach
also
suppressed
non‐radiative
recombination
solar
cells
by
leveraging
interaction
between
functional
groups
defects.
Through
method,
rigid
inverted
attained
power
conversion
efficiency
24.42%
alongside
remarkable
stability.
Concurrently,
achieved
22.21%.
This
strategy
offers
promising
avenue
for
fabricating
enhancing
durability.
Solar RRL,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 17, 2025
To
commercialize
perovskite
solar
cells
(PSCs),
it
is
crucial
to
develop
cost‐effective,
dopant‐free
hole
transport
layers
(HTLs)
that
can
be
processed
at
low
temperatures.
Herein,
a
small
molecular
material
4,4′,4′‐Tris[2‐naphthyl(phenyl)amino]triphenylamine
(2TNATA)
was
utilized
in
inverted
PSCs
as
HTL.
The
position
of
the
highest
occupied
orbital
energy
2TNATA
properly
aligned
with
valence
band
maximum.
Moreover,
lower
temperatures
and
shows
excellent
thermal
stability.
lead
(Pb)
on
exhibited
superior
crystallinity
morphology
compared
poly(3,4‐ethylenedioxythiophene)
polystyrene
sulfonate
(PEDOT:PSS)
poly[bis(4‐phenyl)(2,4,6‐trimethylphenyl)amine]
(PTAA).
Furthermore,
carrier
kinetics
2TNATA‐based
PTAA
PEDOT:PSS‐based
PSCs.
Consequently,
an
outstanding
power
conversion
efficiency
(PCE)
20.58%
observed
from
HTL‐based
0.09
cm
2
PSCs,
while
PEDOT:PSS
HTLs‐based
showed
PCE
19.36%
14.35%,
respectively.
1.0
demonstrated
impressive
20.04%.
results
indicate
might
promising
HTL
for
inexpensive
efficient