Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 22, 2025
Abstract
Porous
lead
iodide
(PbI
2
)
film
is
crucial
for
the
complete
reaction
between
PbI
and
ammonium
salts
in
sequential‐deposition
technology
so
as
to
achieve
high
crystallinity
perovskite
film.
Herein,
it
found
that
tensile
stress
tin
(IV)
oxide
(SnO
electron
transport
layer
(ETL)
a
key
factor
influencing
morphology
crystallization
of
films.
Focusing
on
this,
lithium
trifluoromethanesulfonate
(LiOTf)
used
an
interfacial
modifier
SnO
/PbI
interface
decrease
reduce
necessary
critical
Gibbs
free
energy
nuclei
formation.
The
relaxed
facilitates
more
porous
generation
with
larger
particles
higher
roughness,
resulting
superior‐quality
Besides,
this
strategy
effectively
passivates
inherent
traps
smooths
levels,
boosting
charge
extraction
transfer.
As
result,
champion
power
conversion
efficiency
(PCE)
25.33%
(25.10%
stabilized
600
s)
achieved.
Furthermore,
device
demonstrates
exceptional
stability,
retaining
90%
its
initial
PCE
at
maximum
point
tracking
measurement
(under
100
mW
cm
−2
white
light
illumination
≈55
°C
temperature,
N
atmosphere)
after
h.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(45)
Published: May 29, 2024
Abstract
The
sol–gel
method
is
efficient
and
cost‐effective
for
synthesizing
SnO
2
sol,
wherein
nanocrystallites
(NCs)
are
stabilized
by
electric
double‐layer
of
solvated
ions
tightly
bound
to
their
surface.
However,
this
strong
binding
makes
the
removal
residues
from
electron
transport
layer
(ETL)
be
difficult
at
low
temperatures.
This
hinders
both
close
contact
subsequent
growth
among
adjacent
NCs,
leading
severe
carriers
scattering
grain
boundary,
adversely
affecting
electrical
properties
ETL.
Herein,
sol
synthesized
via
an
ethanol‐based
aqueous
ammonia
(NH
3
·H
O)
introduced
effectively
clean
stubborn
within
ETL
a
temperature
(80
°C).
Removing
reduces
gap
NCs
promotes
further
reconstructed
through
oriented
attachment
(OA),
thereby
reducing
number
boundaries.
Hence,
energy
barriers
decrease
Furthermore,
MHP
prepared
on
treated
has
fine‐tuned
level
alignment,
improving
extraction
capacity.
Consequently,
flexible
perovskite
solar
cells
(f‐PSCs)
incorporating
achieved
notable
increase
in
power
conversion
efficiency,
rising
19.16%
23.71%,
as
well
superior
mechanical
stability.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 18, 2024
Abstract
Tin
oxide
(SnO
2
)
with
high
conductivity
and
excellent
photostability
has
been
considered
as
one
of
the
most
promising
materials
for
efficient
electron
transport
layer
(ETL)
in
perovskite
solar
cells
(PSCs).
Among
them,
SnO
nanoparticles
(NPs)
dispersions
have
extensively
utilized
due
to
their
facile
film
formation.
However,
inherent
defects
agglomeration
issues
NPs,
well
limited
tunability
instability
post‐treatment
process
surface/interface
engineering
strategy,
still
hinder
its
further
applications.
Herein,
a
ligand‐management
strategy
implemented
during
situ
synthesis
NPs
that
can
effectively
achieve
uniform
modification
is
proposed.
During
grafting
reaction
between
diethyl
2‐chloromalonate
(DCMA)
surface
completed.
Compared
process,
this
intrinsic
DCMA‐passivated
(DCMA‐SnO
reduces
trap
state
density
at
interface
ETL
while
enhancing
chemical
stability.
Consequently,
PSCs
based
on
DCMA‐SnO
champion
PCE
25.39%
small
(active
area
0.0655
cm
20.61%
modules
23.25
),
demonstrating
shelf‐life/light
soaking
stability
(advanced
level
ISOS
protocols).
This
exhibits
significant
application
potential
preparing
high‐efficiency
large‐area
PSCs.
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 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.
ACS Energy Letters,
Journal Year:
2024,
Volume and Issue:
unknown, P. 5924 - 5934
Published: Nov. 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.
Micromachines,
Journal Year:
2024,
Volume and Issue:
15(7), P. 859 - 859
Published: June 30, 2024
Perovskite
solar
cells
(PSCs),
which
are
constructed
using
organic-inorganic
combination
resources,
represent
an
upcoming
technology
that
offers
a
competitor
to
silicon-based
cells.
Electron
transport
materials
(ETMs),
essential
PSCs,
attracting
lot
of
interest.
In
this
section,
we
begin
by
discussing
the
development
PSC
framework,
would
form
foundation
for
requirements
ETM.
Because
their
exceptional
electronic
characteristics
and
low
manufacturing
costs,
perovskite
(PSCs)
have
emerged
as
promising
proposal
future
generations
thin-film
energy.
However,
PSCs
with
compact
layer
(CL)
exhibit
subpar
long-term
reliability
efficacy.
The
quality
substrate
beneath
has
major
impact
on
how
quickly
it
grows.
Therefore,
there
been
interest
in
modification
electron
transfer
layers
create
very
stable
efficient
PSCs.
This
paper
examines
systemic
alteration
(ETLs)
based
employed
Also
covered
functions
ETLs
creation
reliable
Achieving
larger-sized
particles,
greater
crystallization,
more
homogenous
morphology
within
films,
all
correlated
performance,
will
be
guided
review
when
they
developed
further.
To
increase
PSCs'
sustainability
enable
them
produce
clean
energy
at
levels
previously
unheard
of,
difficulties
potential
paths
research
also
discussed.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 2, 2025
Abstract
Interface
engineering
has
emerged
as
an
effective
strategy
for
optimizing
the
charge
carrier
dynamics
in
perovskite
solar
cells,
and
design
of
modulators
plays
a
crucial
role
improving
interface
effects.
Here,
halogenated
ethylamine
hydrochloride
(XEA),
such
2‐fluoroethylamine
(FEA),
2‐chloroethylamine
(CEA),
or
(EA),
is
incorporated
into
buried
between
layer
(PVK)
SnO
2
electron
transport
(ETL)
to
assist
crystal
growth,
tune
energy
level
passivate
defects.
Pre‐embedded
XEA
interacts
with
PbI
form
2D
mesophase.
The
mesophase
assists
growth
orientation
epitaxial
perovskite,
resulting
uniform
films
larger
grains
higher
densification,
effectively
reducing
defects
caused
by
excess
at
interface.
NH
3
+
cation
X
−
anion
ions
on
fill
coordinate
vacancies,
passivating
perovskite.
Meanwhile,
introduction
adjusts
match
PVK/ETL,
compensating
loss
Consequently,
FEA‐modified
devices
exhibited
power
conversion
efficiency
24.7%,
featuring
exceptionally
high
open‐circuit
voltage
1.19
V
remarkable
stability.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 10, 2025
Stability
testing
protocols
from
the
International
Summit
on
Organic
and
Hybrid
Solar
Cell
(ISOS)
are
essential
for
standardizing
studies
photothermally
operational
stability
of
perovskite
solar
cells
(PSCs).
Under
photothermal
conditions,
migration
oxygen
SnO2
layer
induces
cationic
dehydrogenation
at
A-site
perovskite,
accelerating
degradation
to
PbI2.
This
leads
formation
photoinduced
I2
Pb0
defects,
significantly
compromising
long-term
stability.
In
this
study,
ordonezite
(ZnSb2O6-x)
as
a
multifunctional
electron
transport
(ETL)
that
captures
migrating
atoms
SnO2/perovskite
interface
is
introduced,
effectively
preventing
buried
interface.
Additionally,
lattice
match
between
ZnSb2O6-x
facilitates
well-ordered
film
growth.
As
result,
PSCs
featuring
ETLs
achieved
high
power
conversion
efficiency
25.02%
retained
90.62%
their
initial
performance
after
1000
h
under
ISOS-D-2
protocol.
Furthermore,
devices
demonstrated
remarkable
thermal
stability,
maintaining
83.69%
original
800
maximum
point
tracking
85
°C,
meeting
stringent
ISOS-L-2
protocol
requirements.
