Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 3, 2025
Abstract
The
limitations
imposed
by
interfacial
voids
and
residual
stress
fundamentally
constrain
the
stability
performance
ceiling
of
perovskite
solar
cells
(PSCs).
Herein,
study
engineers
a
molecular
bridge
placement
ectoine
(Ec)
at
SnO
2
/perovskite
interface.
experimental
investigations
coupled
with
first‐principles
density
functional
theory
(DFT)
calculations
reveal
that
carboxyl
group
preferentially
passivates
uncoordinated
Sn
4+
defects
oxygen
vacancies
in
,
while
imine
establishes
robust
coordination
Pb
⁺
ions
to
passivate
2+
defects.
bi‐anchoring
bridging
mechanism
facilitates
release,
flattens
grain
boundary
grooves,
significantly
suppresses
nonradiative
recombination.
In
turn,
Ec‐modified
PSCs
achieve
power
conversion
efficiency
(PCE)
24.68%
(vs
22.56%
for
control).
Significantly,
unencapsulated
Ec
show
improved
UV
stability,
retaining
80.12%
initial
PCE
after
130
h
(equivalent
1412
irradiation)
under
365
nm
ultraviolet
irradiation
(50
mW
cm
−2
).
uncovers
role
as
optimize
buried
interface
effective
yet
stable
cell
fabrication.
The
stability
of
the
precursor
is
essential
for
producing
high-quality
perovskite
films
with
minimal
non-radiative
recombination.
In
this
study,
methionine
sulfoxide
(MTSO),
which
features
multiple
electron-donation
sites,
strategically
chosen
as
a
stabilizer
and
crystal
growth
mediator
inverted
solar
cells
(PSCs).
MTSO
stabilizes
by
inhibiting
oxidation
iodide
ions
passivates
charged
traps
through
coordination
hydrogen
bonding
interactions.
This
leads
to
enhanced
crystallinity,
reduced
recombination,
decreased
internal
residual
stress
in
film.
As
result,
remarkable
power
conversion
efficiencies
25.91%
(certified
25.76%)
voltage
deficit
0.36
V
0.09-cm
Abstract
Planar
perovskite
solar
cells
(PSCs)
show
huge
promise
as
an
efficient
photovoltaic
technology,
where
the
inefficient
carrier
transport
at
hetero‐interface
largely
limits
their
performance
advancement.
Herein,
bifacial
surface
potential
regulation
is
realized
in
a
monolithic
film
through
interface
doping,
leading
to
optimized
dual‐interfacial
energy
level
alignment.
In
n‐i‐p
planar
device,
up‐shift
of
Fermi
on
bottom
first
achieved
bottom‐up
diffusion
Li
+
.
Then,
vitamin
D2
incorporated
into
methoxy‐Phenethylammonium
iodide
(MeO‐PEAI)
passivator,
which
can
neutralize
top
induced
by
MeO‐PEAI
passivation
and
further
induce
its
down‐shift.
Both
experimental
measurements
theoretical
simulation
reveal
that
effectively
promotes
interfacial
reduces
recombination,
enhancing
adaptability
PSCs
different
charge
materials.
Impressively,
with
2,2′,7,7′‐Tetrakis
[N,
N‐di(4‐methoxyphenyl)
amino]‐9,9′‐spirobifluorene
(Spiro‐OMeTAD)
2,4,6‐Trimethyl‐N,
N‐diphenylaniline
(PTAA)
achieve
efficiencies
26.05%
(certificated
25.80%)
24.65%,
respectively.
Besides,
device
maintain
99%
highest
efficiency
after
aging
more
than
2200
h
ambient
air
relative
humidity
≈20%,
showing
excellent
stability.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 4, 2025
Abstract
Perovskite
solar
cells
(PSCs)
have
great
potential
as
a
third‐generation
emerging
photovoltaic
technology.
Nevertheless,
the
perovskite
films
prepared
by
conventional
solution
methods
are
plagued
large
number
of
defects,
which
not
only
serve
nonradiative
recombination
centers,
but
also
more
susceptible
to
influence
water/oxygen/light
in
environment,
further
degrading
film
quality.
To
address
this
challenge,
additive
engineering
has
been
widely
applied
PSCs.
This
review
summarizes
research
progress
low‐cost,
natural,
environmentally
friendly,
and
nontoxic
plant
extracts
improving
device
performance.
Specifically,
advantages
limitations
different
kinds
PSCs,
analysis
each
layer
adjacent
interface
Furthermore,
effects
applications
on
PSCs
discussed
from
four
aspects,
namely,
regulating
crystallinity
crystals,
stability,
adjusting
energy
levels,
innovative
applications.
Finally,
prospects
role
development
large‐scale
industrialization.
Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 3, 2025
Abstract
The
limitations
imposed
by
interfacial
voids
and
residual
stress
fundamentally
constrain
the
stability
performance
ceiling
of
perovskite
solar
cells
(PSCs).
Herein,
study
engineers
a
molecular
bridge
placement
ectoine
(Ec)
at
SnO
2
/perovskite
interface.
experimental
investigations
coupled
with
first‐principles
density
functional
theory
(DFT)
calculations
reveal
that
carboxyl
group
preferentially
passivates
uncoordinated
Sn
4+
defects
oxygen
vacancies
in
,
while
imine
establishes
robust
coordination
Pb
⁺
ions
to
passivate
2+
defects.
bi‐anchoring
bridging
mechanism
facilitates
release,
flattens
grain
boundary
grooves,
significantly
suppresses
nonradiative
recombination.
In
turn,
Ec‐modified
PSCs
achieve
power
conversion
efficiency
(PCE)
24.68%
(vs
22.56%
for
control).
Significantly,
unencapsulated
Ec
show
improved
UV
stability,
retaining
80.12%
initial
PCE
after
130
h
(equivalent
1412
irradiation)
under
365
nm
ultraviolet
irradiation
(50
mW
cm
−2
).
uncovers
role
as
optimize
buried
interface
effective
yet
stable
cell
fabrication.
