Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 18, 2024
Flexible
perovskite
solar
cells
(FPSCs)
have
great
promise
for
applications
in
wearable
technology
and
space
photovoltaics.
However,
the
unpredictable
crystallization
of
on
flexible
substrates
results
significantly
lower
efficiency
mechanical
durability
than
industry
standards.
A
strategy
is
investigated
employing
polymer
electrolyte
poly(allylamine
hydrochloride)
(PAH)
to
regulate
passivate
defect
states
films
substrates.
The
weakly
acidic
precursor
allows
PAH
undergo
partial
ionization,
leading
protonation
some
─NH
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 21, 2025
Abstract
Metal
halide
perovskite
solar
cells
(PSCs)
have
emerged
as
one
of
the
most
promising
candidates
for
next‐generation
photovoltaic
technologies.
However,
films
deposited
by
blade‐coating
usually
exhibit
inferior
film
morphology
compared
to
those
fabricated
spin‐coating,
which
hinders
power
conversion
efficiency
(PCE)
and
stability
scalable
modules
(PSMs).
Herein,
ellipsoidal
colloids
are
tailored
in
precursor
solution
incorporating
polymer
additives.
Compared
unregulated
spherical
colloids,
demonstrate
more
oriented
packing
during
process,
is
due
anisotropic
driven
force
from
fluidic
flow
meniscus.
As
a
result
improved
morphology,
regulated
PSCs
PSMs
achieve
superior
PCE
24.31%
21.67%
(21.37%
certified),
respectively,
aperture
areas
0.09
13.94
cm
2
,
89%
initial
after
600
h
continuous
operation.
Self-assembled
monolayers
(SAMs)
with
excellent
hole
conduction
capabilities
significantly
improve
the
performance
of
inverted
perovskite
solar
cells
(PSCs).
However,
amphiphilic
nature
SAMs
causes
spontaneous
formation
spherical
micelles
in
solution,
limiting
their
surface
coverage
and
uniformity
on
indium
tin
oxide
(ITO)
substrates.
Furthermore,
distribution
directly
affects
morphology
films
charges
transfer
properties
at
buried
interface.
This
study
employs
a
cosolvent
strategy
combining
n-butanol
dimethyl
sulfoxide
to
uniform
spreading
ITO.
The
synergistic
interaction
between
solvent
molecules
smooths
[2-(3,6-dimethoxy-9H-carbazol-9-yl)
ethyl]
phosphonic
acid
(MeO-2PACz)
enhances
its
coverage.
based
MeO-2PACz
has
characteristics
concentrated
potential
high
work
function,
exhibiting
enhanced
P-type
behavior.
Additionally,
cosolvent-treated
provide
nucleation
sites
for
crystallization
perovskite,
effectively
eliminating
void
defects
interface
improving
crystallinity
films.
Consequently,
optimized
device
achieves
power
conversion
efficiency
(PCE)
25.51%
fill
factor
84.38%.
ordered
stability
PSCs,
encapsulated
retaining
92.63%
initial
PCE
after
operating
1500
h
under
simulated
AM
1.5G
standard
irradiation
air
65
°C.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 13, 2025
Abstract
Inverted
perovskite
solar
cells
(PSCs)
have
become
a
current
research
hotspot
due
to
their
advantages
such
as
low‐temperature
preparation,
low
hysteresis,
and
compatibility
with
stacked
other
cells.
NiO
x
,
metal
oxide
hole
transport
layer
material,
is
widely
used
in
inverted
PSCs.
However,
challenges
high
defect
density,
intrinsic
conductivity,
unfavorable
valence
band
mismatch
at
the
/perovskite
interface
hinder
further
improvement
of
device
performance.
Therefore,
enhancing
buried
between
layers
crucial
for
optimizing
This
review
systematically
categorizes
materials
based
on
types,
including
organic
small
molecules,
self‐assembled
monolayers
(SAMs),
polymers,
salts.
Additionally,
it
incorporates
strategies,
introduction
low‐dimensional
materials,
doping,
advancements
deposition
technology.
By
reviewing
technologies
past
2
years,
this
article
aims
provide
insights
achieve
more
efficient
stable
‐based
Finally,
we
also
discuss
future
directions
challenges.
The
bottom
small
n
phases
in
quasi-two-dimensional
(Q-2D)
perovskite
films
significantly
hinder
their
photovoltaic
performance
development
due
to
severely
low
conductivity
and
nonideal
band
alignment
the
corresponding
solar
cells.
In
this
study,
we
successfully
suppressed
growth
of
Q-2D
Ruddlesden-Popper
(RP)
(BA2MA4Pb5I16,
⟨n⟩
=
5)
by
introducing
2,7-bis(diphenylphosphoryl)-9,9'-spirobifluorene
(SPPO13)
as
an
additive
into
precursor
solution.
It
is
interesting
find
that
hole
transport
layer
poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine]
(PTAA)
our
p-i-n
device
can
attract
SPPO13
π-π
stacking
effect.
As
a
result,
concentrates
at
bottom,
coordination
between
PbI2
leads
more
[PbI6]4-
octahedra
gathering
downside
film.
Thereby,
large
remain
unwanted
are
suppressed.
optimized
achieves
remarkable
power
conversion
efficiency
18.41%,
which,
according
knowledge,
highest
value
for
BA-MA-based
perovskite.
Moreover,
also
demonstrates
outstanding
stability,
maintaining
99.5%
95.3%
initial
after
being
stored
over
3500
h
under
maximum
point
tracking
operation
400
h,
respectively.
Unlike
conventional
methods
primarily
address
bulk
or
interface
properties,
approach
uniquely
combines
effects
defect
passivation
through
phosphine
oxide
groups,
leading
enhanced
crystallinity,
vertical
orientation,
nonradiative
recombination.
This
work
provides
new
regulate
n-phase
promote
behavior
Solar RRL,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 28, 2025
Perovskite
solar
cells
(PSCs)
have
gained
significant
attention
due
to
their
high
efficiency
and
potential
for
low‐cost
production.
The
upscaling
of
PSCs
is
key
its
final
large‐scale
commercial
deployment.
In
recent
several
years,
considerable
advancements
been
obtained
on
large‐area
perovskite
modules
(PSMs).
Several
deposition
methods
employed
fabricate
PSMs,
mainly
including
spin‐coating,
doctor‐blading,
slot‐die
coating,
meniscus
printing,
screen
vacuum
deposition.
Among
them,
coating
technique
plays
a
critical
role
in
preparing
high‐efficiency
which
most
widely
adopted
until
now.
this
review,
the
fundamentals
important
parameters
application
PSMs
are
first
introduced.
Then,
challenges
corresponding
solutions
discussed.
Finally,
some
development
directions
issues
presented
advance
photovoltaic
devices
toward
practical
application.
Small,
Journal Year:
2025,
Volume and Issue:
21(11)
Published: Feb. 14, 2025
Abstract
Obtaining
efficient
perovskite
solar
modules
(PSMs)
with
enhanced
UV
stability
is
essential
for
their
practical
applications,
yet
remains
a
significant
challenge.
In
this
work,
highly
organic–inorganic
copper
halide
downshifting
film
that
significantly
enhances
the
of
PSMs
demonstrated
by
converting
high‐energy
harmful
photons
into
beneficial
visible
light
contribute
to
photovoltaic
performance.
The
tetrapropylammonium
(TPA)
cation
selected
as
main
framework
synthesize
series
halides,
denoted
Br
x
I
y
.
A
near‐unity
photoluminescence
quantum
yield
(PLQY)
99.51%
can
be
achieved
precisely
controlling
Br/I
ratio
2:4,
2
4
,
which
one
highest
values
reported
date.
dual
self‐trapped
excitons
(STEs)
luminescence
mechanism
systematically
investigated
both
temperature‐dependent
and
pressure‐dependent
experiments.
This
dual‐STEs
enables
efficiently
absorb
re‐emit
photons,
thereby
mitigating
photodegradation
induced
light.
Finally,
effective
layer.
an
optimal
efficiency
22.24%,
maintaining
over
90%
initial
after
exposure
total
dose
66.07
kWh
m
−2
Small Methods,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 24, 2025
Abstract
Metal
halide
perovskite
solar
cells
(PSCs)
are
emerging
as
promising
candidates
for
next‐generation
photovoltaics
aimed
at
green
energy
production.
However,
during
solution‐processed
film
deposition,
the
distinct
rheological
behaviors
of
blade
coating,
compared
to
spin
result
in
less
controlled
crystallization,
leading
inferior
quality
and
limiting
power
conversion
efficiency
(PCE)
blade‐coated
photovoltaics.
In
this
work,
ethylene
glycol
(EG)
is
introduced
an
inert
co‐solvent
precursor
solutions
achieve
high‐quality
films
via
coating.
The
high
viscosity
EG
facilitates
deposition
thick
ranging
from
400
2000
nm,
while
its
low
vapor
pressure
effectively
suppresses
premature
nucleation
before
vacuum
flashing,
with
enhanced
morphology.
As
a
result,
PSCs
impressive
champion
PCE
24.10%
retain
89%
their
initial
after
600
h
continuous
operation.
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 4, 2025
Abstract
Metal
halide
perovskite‐based
devices
can
exhibit
exceptional
optoelectronic
performance
at
relatively
high
defect
densities,
a
phenomenon
commonly
referred
to
as
tolerance,
which
is
one
of
the
most
important
features
metal
perovskites
(MHPs).
Defect
tolerance
previously
thought
be
static
property,
determined
solely
by
composition
and
manufacturing
process.
However,
recent
studies
have
shown
that
MHPs
dynamic
vary
over
time.
For
example,
power
conversion
efficiency
MHPs‐based
solar
cells
has
been
found
improve
significantly
under
continuous
illumination.
Although
this
unique
self‐optimization
behavior
MHPs,
it
seriously
affect
stability
output
in
real‐world
operating
conditions.
In
view
this,
extensive
research
conducted,
but
physical
mechanism
photoinduced
(DDT)
remained
inconclusive,
both
mechanisms
experimental
phenomena
continue
subjects
controversy.
Therefore,
timely
summarization
on
related
DDT
urgently
needed.
review,
systematic
overview
first
provided
phenomena,
characteristics,
influencing
factors
DDT.
Following
that,
proposed
for
are
summarized,
with
focus
carrier‐defect
carrier‐lattice
interactions.
Finally,
current
challenges
faced
summarized
an
outlook
future
developments
provided.
This
review
aims
offer
comprehensive
understanding
enhance
cells,
thereby
facilitating
advancement
commercialization
these
technologies.
