Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 14, 2025
Abstract
The
nonradiative
recombination
losses
at
the
buried
interface,
arising
from
interfacial
defects,
unfavorable
energy
level
alignment,
and
residual
strain,
are
main
impediment
for
perovskite
solar
cells
(PSCs)
to
achieve
superior
efficiency
stability.
To
address
this
issue,
a
multifunctional
dipolar
molecular
bridge,
1,4‐phenylenebis(1‐cyanoethene‐2,1‐diyl)
bisphosphonic
acid
(CS‐103),
is
constructed
by
symmetric
dual
anchoring
strategy,
which
can
simultaneously
interact
with
both
sides
interface
of
n‐i‐p
PSCs.
surface
defects
SnO
2
synchronously
passivated,
while
alignment
also
well
optimized
due
high
potential
large
regional
dipole
moment
CS‐103.
Meanwhile,
crystallization
process
be
optimized,
thus
resulting
in
relatively
crystallinity,
few
grain
size,
smooth
surface.
Furthermore,
CS‐103
as
chemically
bonded
strain
effectively
released.
Accordingly,
suppressed
greatest
extent,
champion
power
conversion
(PCE)
24.77%.
unencapsulated
PSCs
maintain
91%
initial
PCE
more
than
1000
h
according
ISOS‐D‐1
protocol,
presenting
notable
long‐term
ACS Energy Letters,
Год журнала:
2024,
Номер
unknown, С. 5924 - 5934
Опубликована: Ноя. 20, 2024
Buried-interface
engineering
is
crucial
to
the
performance
of
perovskite
solar
cells.
Self-assembled
monolayers
and
buffer
layers
at
buried
interface
can
optimize
charge
transfer
reduce
recombination
losses.
However,
complex
mechanisms
difficulty
in
selecting
suitable
functional
groups
pose
great
challenges.
Machine
learning
(ML)
offers
a
powerful
tool
for
screening
identifying
effective
structures
modification.
Our
ML-driven
approach
led
preparation
two
promising
organic
molecules,
PAPzO
PAPz,
which
exhibit
synergistic
interactions
with
SnO2
perovskites.
These
molecules
decrease
trap
densities,
elongate
carrier
lifetimes,
retard
crystallization.
PAPzO,
stronger
binding
energy
better
aligned
levels,
enables
power
conversion
efficiency
(PCE)
26.04%
long-term
stability,
maintaining
91.24%
its
original
PCE
after
1,200
h
continuous
maximum
point
tracking.
This
ML-integrated
marks
significant
advancement
development
efficient
stable
photovoltaics.
Abstract
Pb‐related
imperfections
(surface
or
halide
vacancy
induced
uncoordinated
Pb
2+
,
Pb‐I
antisite,
and
defects)
of
the
ionic
crystal
perovskite
film
seriously
restrict
photovoltaic
performance
solar
cells
(PSCs).
Here,
an
aniline
derivative
N‐(4‐cyanophenyl)acetamide
(CAL)
is
rationally
designed,
incorporating
bilateral
functional
sites
cyano
acetyl
groups,
acting
as
Lewis
base
molecule
for
managing
in
surface
through
post‐treatment.
Theoretical
calculation
experimental
verification
together
proved
reduced
defect
density,
improved
crystallinity,
inhibited
ion
migration
CAL‐modified
perovskite.
Precisely,
a
side
group
another
can
both
coordinate
with
its
low
electrostatic
potential
energy.
Further,
core
π‐π
conjugate
structure
benzene
ring
ligand
tend
to
form
dimer
improve
mobility
carrier
transportation
collection.
The
strategy
demonstrates
champion
PCE
24.35%
air‐processed
PSCs
over
1200
hours
maximum
power
point
tracking
(MPPT)
stability.
This
study
presents
comprehensive
approach
overcoming
current
limitations
PSCs,
paving
way
their
integration
into
mainstream
technologies.
Angewandte Chemie,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 15, 2024
Abstract
The
regulation
of
interfaces
remains
a
critical
and
challenging
aspect
in
the
pursuit
highly
efficient
stable
perovskite
solar
cells
(PSCs).
Here,
2,2′‐bipyridyl‐4,4′‐dicarboxylic
acid
(
HBPDC
)
is
incorporated
as
an
interfacial
layer
between
SnO
2
layers
PSCs.
two
carboxylic
moieties
on
bind
to
through
esterification,
while
its
nitrogen
atoms,
possessing
lone
electron
pairs,
interact
with
uncoordinated
lead
(Pb
2+
atoms
Lewis
acid‐base
interactions.
This
dual
functionality
enables
simultaneous
passivation
surface
defects
both
buried
layers.
In
addition,
electron‐deficient
nature
enhances
energy
band
alignment
facilitates
transfer
from
.
Furthermore,
incorporation
strengthens
adhesion,
improving
mechanical
reliability.
As
result,
PSCs
exhibited
impressive
power
conversion
efficiency
(PCE)
25.41
%
under
standard
AM
1.5G
conditions,
along
remarkable
environmental
stability.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 17, 2025
Abstract
Molecular
bridges
with
one
end
absorbed
on
the
electron
transport
layer
(ETL)
and
other
bound
to
perovskite
can
effectively
repair
imperfections
at
ETL/perovskite
interface.
However,
single‐layered
usually
coexist
undesired
double‐layered
molecules,
leaving
a
Van
der
Waals
gap
between
them.
Charge
only
occur
via
tunneling
effect
travel
through
gap,
which
requires
forward
voltage
bias
leads
constrained
charge
efficiency.
Herein,
study
designs
synthesizes
an
imidazolium
derivative
ionic
salt
of
1,3‐dibenzyl‐2‐phenylimidazolium
chloride
(DPhImCl),
featuring
multiple
aromatic
side
chains,
form
bilayered
interfacial
molecular
mediated
by
π–π
stacking.
The
reveals
that
DPhIm
+
strongly
adsorbs
both
SnO
2
surfaces
ring,
while
two
layers
respectively
interact
stacking
benzene
ring
in
forming
bridge
/perovskite
This
interaction
promotes
orderly
creates
hopping
channels
for
transport,
thus
facilitating
transfer
As
result,
impressive
device
efficiency
25.90%
(certified
25.27%)
robust
T
90
operational
lifetime
1101
h
n‐i‐p
solar
cells
achieved.
ACS Nano,
Год журнала:
2024,
Номер
18(22), С. 14696 - 14707
Опубликована: Май 23, 2024
Surface
defect
passivation
and
carrier
injection
regulation
have
emerged
as
effective
strategies
for
enhancing
the
performance
of
perovskite
light-emitting
diodes
(Pero-LEDs).
It
usually
requires
two
functional
molecules
to
realize
separately.
In
other
words,
developing
one
single
molecule
possessing
these
capabilities
remains
challenging.
Herein,
we
utilized
π-conjugated
fluorene
derivatives
surface
treatment
materials,
9,9-Spirobi[fluorene]
(SBF),
9,9-Spirobifluoren-2-yl-diphenylphosphine
oxide
(SPPO1),
2,7-bis(diphenylphosphoryl)-9,9'-spirobifluorene
(SPPO13),
investigate
influence
their
chemical
structure
on
device
optoelectronic
performance,
especially
regulation.
Consequently,
capability
double-bonded
SPPO13
surpassed
single-bonded
SPPO1
nonbonded
SBF,
which
all
showed
excellent
electron
transport
properties,
injection.
The
maximum
external
quantum
efficiencies
(EQE)
Pero-LEDs
treated
with
SPPO1,
were
8.13,
17.48,
22.10%,
respectively,
exceeding
that
derivative-free
(6.55%).
Notably,
SPPO13-treated
devices
exhibited
exceptional
reproducibility,
yielding
an
average
EQE
20.00
±
1.10%
based
30
devices.
This
result
emphasizes
potential
tailored
Pero-LEDs.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 19, 2024
Abstract
The
commercialization
of
perovskite
solar
cells
(PSCs),
as
an
emerging
industry,
still
faces
competition
from
other
renewable
energy
technologies
in
the
market.
It
is
essential
to
ensure
that
PSCs
are
durable
and
stable
high‐temperature
environments
order
meet
varied
market
demands
hot
regions
or
seasons.
influence
high
temperatures
on
complex,
encompassing
factors
such
lattice
strain,
crystal
phase
changes,
creation
defects,
ion
movement.
Furthermore,
it
intensifies
vibrations
phonon
scattering,
which
turn
impacts
migration
rate
charge
carriers.
This
review
focuses
durability
organic–inorganic
hybrid
under
temperatures.
begins
by
analyzing
impact
external
temperature
variations
internal
dynamics
PSCs.
Subsequently,
outlines
various
mechanisms
provided
different
functional
molecules,
applied
interface
stabilization,
grain
boundary
passivation,
growth
control,
electrode
protection,
development
new
hole
transport
layers,
enhance
thermal
stability
Additionally,
machine
learning
(ML)
discussed
for
predicting
structure
stability,
operational
material
screening,
with
a
focus
potential
deep
explainable
artifical
intelligence
(AI)
techniques
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 15, 2024
Abstract
The
regulation
of
interfaces
remains
a
critical
and
challenging
aspect
in
the
pursuit
highly
efficient
stable
perovskite
solar
cells
(PSCs).
Here,
2,2′‐bipyridyl‐4,4′‐dicarboxylic
acid
(
HBPDC
)
is
incorporated
as
an
interfacial
layer
between
SnO
2
layers
PSCs.
two
carboxylic
moieties
on
bind
to
through
esterification,
while
its
nitrogen
atoms,
possessing
lone
electron
pairs,
interact
with
uncoordinated
lead
(Pb
2+
atoms
Lewis
acid‐base
interactions.
This
dual
functionality
enables
simultaneous
passivation
surface
defects
both
buried
layers.
In
addition,
electron‐deficient
nature
enhances
energy
band
alignment
facilitates
transfer
from
.
Furthermore,
incorporation
strengthens
adhesion,
improving
mechanical
reliability.
As
result,
PSCs
exhibited
impressive
power
conversion
efficiency
(PCE)
25.41
%
under
standard
AM
1.5G
conditions,
along
remarkable
environmental
stability.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 8, 2024
Abstract
The
buried
interface
of
wide‐bandgap
(WBG)
perovskite
solar
cells
(PSCs)
is
crucial
for
effective
charge
transfer
and
device
stability.
In
this
study,
2,4‐diamino‐6‐fluoropyrimidine
(DMFP)
incorporated
into
the
layer
to
form
a
molecular
bridge
at
between
MeO‐4PACZ.
DMFP
treatment
reduces
agglomeration
MeO‐4PACZ,
resulting
in
denser
more
uniform
self‐assembled
monolayers
(SAMs)
by
inducing
favorable
crystal
orientation.
addition,
strong
chemical
interaction
films
significantly
defect
state
density
promotes
growth
high‐quality
grains.
Moreover,
effectively
modulates
energy
levels
perovskites,
facilitating
interfacial
extraction.
As
result,
WBG
PSCs
treated
with
demonstrate
remarkable
power
conversion
efficiency
(PCE)
21.96%,
an
enhanced
short‐circuit
current
(J
SC
)
21.60
mA
cm
−2
high
open‐circuit
voltage
(V
OC
1.23
V.
prepared
retain
95.5%
their
initial
after
1500
h
aging
relative
humidity
≈30%
air,
indicating
excellent
This
study
contributes
deeper
understanding
proposes
collaborative
approach
developing
high‐performance
PSCs.