Coatings,
Год журнала:
2024,
Номер
15(1), С. 15 - 15
Опубликована: Дек. 27, 2024
Flexible
perovskite
solar
cells
(F-PSCs)
hold
great
potential
for
lightweight
photovoltaic
applications
due
to
their
flexibility,
bending
compatibility,
and
low
manufacturing
cost.
However,
tin
oxide
(SnO2),
as
a
common
electron
transport
layer
(ETL)
used
in
F-PSCs,
typically
suffers
from
high-density
surface
defects
that
hinder
the
charge
extraction
efficiency
deteriorate
crystallization
quality
of
upper
film.
Additionally,
poor
buried
interface
intensifies
lattice
extrusion
strain
residue
across
films,
further
aggravating
mechanical
brittleness
devices.
To
address
issues,
we
developed
molecular
bridging
strategy
by
introducing
2,2′-oxybis(ethylenediamine)
dihydrochloride
(DO)
at
perovskite/SnO2
interface.
The
diammonium
groups
spacer
ligands
can
achieve
bidentate
anchoring
on
SnO2
cooperating
with
oxygen
atom
alkyl
chain
passivate
charged
tailored
properties
also
endow
optimized
films
significantly
alleviate
tensile
strengthen
perovskite’s
pliability.
As
result,
F-PSCs
achieved
champion
23.50%,
outperforming
value
21.87%
control
device.
Furthermore,
devices
exhibited
excellent
robustness,
maintaining
90%
initial
PCE
after
6000
cycles
radius
4
mm.
This
work
presents
reliable
synergistic
optimization
contact
interface,
contributing
development
efficient
stable
F-PSCs.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 8, 2025
Abstract
SnO₂
is
a
widely
used
electron
transport
layer
(ETL)
material
in
perovskite
solar
cells
(PSCs),
and
its
design
optimization
are
essential
for
achieving
efficient
stable
PSCs.
In
this
study,
the
situ
formation
of
chain
entanglement
gel
polymer
electrolyte
reported
an
aqueous
phase,
integrated
with
as
ETL.
Based
on
self‐polymerization
3‐[[2‐(methacryloyloxy)ethyl]dimethylammonium]propane‐1‐sulfonic
acid
(DAES)
environment,
combining
catalytic
effect
LiCl
(as
Lewis
acid)
salting‐out
effect,
introduction
polyvinylpyrrolidone
(PVP)
other
chain,
gelled
SnO
2
(G‐SnO
)
structure
successfully
constructed
wide
range
functions.
The
PDEAS‐PVP
achieves
passivation
Pb
⁺
capture
through
chemical
chelation
mechanisms
explored.
results
demonstrated
that
all‐in‐air
prepared
PSC
based
G‐SnO
exhibited
excellent
power
conversion
efficiency
(PCE)
24.77%
retained
83.3%
their
initial
after
2100
h
air
exposure.
Additionally,
exposes
more
C═O
S═O
active
sites,
significantly
enhanced
lead
absorption
capability
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 16, 2025
Abstract
Perovskite
technologies
has
taken
giant
steps
on
its
advances
in
only
a
decade
time,
from
fundamental
science
to
device
engineering.
The
possibility
exploit
this
technology
thin
flexible
substrate
gives
an
unbeatable
power
weight
ratio
compares
similar
photovoltaic
systems,
opening
new
possibilities
and
integration
concepts,
going
building
integrated
applied
photovoltaics
(BIPV,
BAPV)
internet
of
things
(IoT).
In
perspective,
the
recent
progress
perovskite
solar
substrates
are
summarized,
focusing
challenges
that
researchers
face
upon
using
substrates.
A
dig
into
material
is
necessary
understand
what
kind
mechanisms
limiting
efficiency
compare
rigid
substrates,
which
physical
mechanism
limits
upscaling
substrate.
Furthermore,
overview
stability
test
modules
will
be
described,
suggesting
common
standard
procedure
guidelines
follow,
showing
additional
issues
bending,
how
prevent
degradation
providing
ad‐hoc
encapsulation.
Finally,
devices
market
shown,
giving
outline
exploited
still
missing
need
stakeholders’
attention.
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 8, 2025
The
addition
of
organic
cationic
iodides
to
form
low-dimensional
perovskite
is
an
essential
strategy
for
defect
passivation
in
solar
cells
(PSCs).
Specially,
the
2D/3D
structure
can
combine
stability
2D
and
high
charge
transport
performance
3D
perovskite.
Here,
we
introduced
phenylammonium
hydroiodide
salts
with
different
alkyl
chain
lengths
into
PSCs
precursor
solution
research
influence
on
formation
thin
films
photovoltaic
PSCs.
As
a
result,
champion
power
conversion
efficiency
(PCE)
was
increased
22.68%
by
incorporation
cation
phenylpropyl
ammonium
iodide
(PPAI)
best
length.
We
further
fabricated
modules
(PSMs)
aperture
area
21
cm2,
achieving
impressive
21.65%
excellent
that
maintaining
89%
its
initial
after
1000
h
maximum
point
tracking.
Flexible
perovskite
solar
cells
(FPSCs)
have
advanced
significantly
because
of
their
excellent
power-per-weight
performance
and
affordable
manufacturing
costs.
The
unsatisfactory
efficiency
mechanical
stability
FPSCs
are
bottleneck
challenges
that
limit
application.
Here,
we
explore
the
use
octylammonium
acetate
(OAAc)
with
a
long,
intrinsic,
flexible
molecular
chain
on
films
for
surface
adhesion
releasing.
results
showed
OAAc
high
structural
flexibility
strong
interactions
can
act
as
release
layer
in
releasing
residual
tensile
stress,
confirmed
by
film
device
characterizations
well
finite-element
simulation.
Moreover,
passivation
could
increase
formation
energy
defects
including
I
vacancy,
Pb
Pb-I
antisite.
experimental
trap
states
perovskites
were
suppressed
after
modification,
which
is
beneficial
to
construction
high-quality
films.
With
open-circuit
voltage
1.196
V,
OAAc-treated
devices
increased
from
23.14%
25.47%
rigid
substrate
(23.12%
substrate),
yielding
superior
long-term
durability.
corresponding
retains
74%
initial
value
even
8000
bending
cycles
at
radius
5
mm.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 10, 2025
Abstract
Slot‐die
coating
has
become
essential
for
the
large‐scale
production
of
perovskite
solar
cells
(pero‐SCs)
and
modules
(pero‐SMs).
However,
power
conversion
efficiencies
(PCEs)
pero‐SCs
pero‐SMs
produced
by
slot‐die
still
significantly
lag
behind
those
spin‐coated
devices
owing
to
uncontrollable
crystallization
kinetics
complex
phase
evolution
perovskites
during
film
formation.
In
this
study,
a
precursor
solution
is
engineered
adding
volatile
2‐methoxyethanol
(2‐ME)
combining
it
with
DMF
as
main
solvent.
Its
high
vapor
pressure
Kamlet−Taft
β
value
enabled
rapid
nucleation
hydrogen
bonding
formamidinium
iodide,
promoting
formation
high‐density
nuclei
that
template
uniform
growth
directly
trigger
α
‐phase
Consequently,
high‐quality,
large‐area
(25
cm
2
)
film,
uniform,
pinhole‐free,
phase‐pure
characteristics,
successfully
deposited
using
method.
Ultimately,
(0.062
(15.64
fabricated
achieved
impressive
PCEs
24.20%
21.84%,
respectively.
Notably,
unencapsulated
demonstrated
superior
operational
stability,
T
90
>
1150
h.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 20, 2025
Abstract
Diammonium
derivatives
with
electron‐withdrawing
cores
of
cyclohexyl
or
phenyl
have
demonstrated
enormous
potential
in
achieving
high‐performance
perovskite
solar
cells.
Nevertheless,
the
critical
role
these
diammonium
passivation
on
device
performance
is
yet
to
be
elucidated.
Herein,
two
kinds
ligands
1,
4‐cyclohexyldimethylammonium
diiodide
(CyDMADI)
and
4‐phenyldimethylammonium
(PhDMADI)
are
introduced
into
precursor
for
bulk
passivation.
The
PhDMADI
system
exhibits
a
stronger
unit
comparison
CyDMADI
core,
thus
resulting
enhanced
electrostatic
interaction
between
uncoordinated
Pb
2+
groups
hydrogen
bonds
I─Pb
skeleton.
Such
strengthened
interactions
effectively
inhibit
generation
trap
states
therefore
significantly
decrease
non‐radiative
recombination.
PhDMADI‐passivated
film
demonstrates
mitigated
microstrain
decreased
grain
boundary
grooves
（GBGs）
compared
CyDMADI‐based
counterpart.
Simultaneously,
treatment
can
efficiently
slow
down
hot‐carriers
cooling
dynamics
process,
benefiting
transfer
hot‐carriers.
Consequently,
achieves
an
impressive
efficiency
26.04%,
along
excellent
operating
stability
which
retains
90%
its
initial
after
1100
h
tracking
at
maximum
power
point
under
continuous
one
sun
illumination.
