The Journal of Physical Chemistry Letters,
Journal Year:
2024,
Volume and Issue:
15(42), P. 10686 - 10695
Published: Oct. 16, 2024
Completing
the
picture
of
underlying
physics
perovskite
solar
cell
interfaces
that
incorporate
self-assembled
molecular
layers
(SAMs)
will
accelerate
further
progress
in
p-i-n
devices.
In
this
work,
we
modified
Fermi
level
a
nickel
oxide–perovskite
interface
by
utilizing
SAM
with
range
dipole
strengths
to
establish
link
between
resulting
shift
built-in
potential
and
device
parameters.
To
achieve
this,
fabricated
series
high-efficiency
cells
no
hysteresis
characterized
them
through
stabilize
pulse
(SaP),
JV
curve,
time-resolved
photoluminescence
(TRPL)
measurements.
Our
results
unambiguously
show
drop
across
layer
(in
0.6–1
V)
exceeds
work
function
difference
at
device's
electrodes.
These
extracted
values
directly
correlate
differences
adjacent
transport
layers,
thus
demonstrating
their
entirely
drives
configuration.
Additionally,
find
selecting
deep
HOMO
can
result
charge
accumulation
interface,
leading
reduced
current
flow.
findings
provide
insights
into
cells,
highlighting
importance
interfacial
energetics
on
performance.
Small Methods,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 25, 2025
Self-assemble
monolayers
(SAMs)
have
become
state-of-the-art
hole-selective
contacts
for
high-efficiency
perovskite-based
solar
cells
due
to
their
easy
processing,
passivation
capability,
and
low
parasitic
absorption.
Nevertheless,
the
deposition
of
SAMs
with
a
monolayer
thickness
high
packing
density
on
metal
oxide
substrates,
critical
challenges
persist.
To
overcome
these,
study
focuses
impact
annealing
temperature
-
an
intrinsic
yet
so
far
unexplored
process
parameter
during
formation
SAMs.
By
performing
in
situ
angle-resolved
X-ray
photoelectron
spectroscopy
combined
advanced
data
analysis
routines,
it
is
revealed
that
increasing
reduces
formed
SAM
layer
from
multilayer
stack
≈5
nm
at
100
°C
(conventional
employed
literature)
150
°C.
Furthermore,
denser
adsorption
surface
promoted
temperatures,
which
enhances
interfacial
SAM/perovskite
quality.
With
this
strategy,
1.3%abs
power
conversion
efficiency
(PCE)
increment
obtained
fully-textured
perovskite/silicon
tandem
cells,
improved
reproducibility,
champion
device
approaching
30%
PCE.
This
advances
understanding
presents
promising
strategy
further
progress
cells.
Advanced Materials Technologies,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 20, 2025
Abstract
The
urgency
for
a
sustainable
mitigation
of
the
environmental
impacts
caused
by
climate
change
highlights
importance
renewable
energy
technologies
to
fight
this
challenge.
Perovskite
solar
cells
(PSCs)
emerge
as
promising
alternative
traditional
photovoltaic
(PV)
due
their
unprecedented
increase
in
efficiency
(currently
peaking
at
26.95%)
and
long‐term
stability
proven
successful
completion
industry
relevant
International
Electrotechnical
Commission
(IEC)
testing
standards.
Flexible
PSCs
(f‐PSCs)
offer
significant
advantages
such
lightweight
high
power‐per‐weight
ratio,
mechanical
flexibility,
throughput
roll‐to‐roll
(R2R)
manufacturing.
These
make
f‐PSCs
ideal
implementation
various
applications
areas,
wearable
electronics,
portable
devices,
space
PV,
building‐
or
automotive‐integrated
PVs,
more.
Notably,
efficiencies
over
23%
now
mark
milestone
f‐PSCs,
demonstrating
competitiveness
with
rigid
panels.
This
review
explores
breakthroughs
focusing
on
flexible
substrates,
electrode
materials,
perovskite
inks,
encapsulation
strategies.
It
also
covers
recent
advancements
studies
fabricated
scalable
deposition
methods
emphasizes
interfacial
engineering
enhancing
durability.
concludes
summary
key
findings,
remaining
challenges,
perspectives
market
uptake
f‐PSCs.
The
p-i-n
type
perovskite
solar
cells
with
a
nickel
oxide
(NiOx)
hole
transport
layer
in
combination
self-assembled
monolayers
(SAMs)
have
high
power
conversion
efficiency
(PCE)
of
over
26%.
surface
properties
the
SAM
significant
impact
on
growth
and
crystallization
film.
In
meanwhile,
defects
formed
during
thermal
annealing
at
interface
would
act
as
charge
recombination
centers,
decreasing
device
performance
stability.
To
address
these
issues,
this
work
introduces
3,4,5-trifluorophenylboronic
acid
(3,4,5-3FPBA)
interfacial
modification
to
improve
buried
that
enable
better
With
3,4,5-3FPBA
layer,
based
composition
Cs0.05(FA0.98MA0.02)0.95Pb(I0.95Br0.05)3,
increased
from
21.99%
24.02%.
A
similar
improvement
was
observed
for
Cs0.05FA0.82MA0.13Pb(I0.85Br0.15)3,
where
21.87%
22.76%.
universality
has
been
confirmed.
addition,
resulting
showed
improved
stability,
maintaining
75%
its
initial
after
500
h
continuous
heating
85
°C
unencapsulated
devices.
Advances in Materials Science and Engineering,
Journal Year:
2025,
Volume and Issue:
2025(1)
Published: Jan. 1, 2025
The
selection
of
appropriate
materials
for
each
layer
in
the
device
design
has
a
significant
impact
on
photovoltaic
(PV)
performance
perovskite
solar
cells
(PSCs).
In
particular,
hole
transport
(HTL)
is
responsible
extracting
holes
from
and
transferring
them
to
relevant
electrode.
this
work,
we
investigated
various
commercially
available
dispersions
metal
oxide
(MO
X
)
(HTMs)
including
nickel
(NiO),
iron
(Fe
3
O
4
),
tungsten
(WO
Spiro‐OMeTAD
(as
reference)
single
bilayer
architecture
PV
PSCs.
comparative
analysis
reveals
that
NiO/Spiro
combination
delivers
best
overall
performance,
achieving
power
conversion
efficiency
(PCE)
18.21%
under
optimized
conditions.
spite
offering
an
effective
charge
extraction,
optimal
configuration
revealed
very
low
hysteresis,
which
essential
long‐term
stability
reproducibility
MO
/Spiro
HTL‐based
devices
exhibited
higher
PCE,
better
stability,
reduced
interfacial
trap
densities,
extraction
rates
comparison
reference
(pristine
Spiro‐OMeTAD)
devices.
These
findings
suggest
incorporating
between
layers
significantly
enhances
provides
further
exploration
commercial
use.
Energies,
Journal Year:
2025,
Volume and Issue:
18(7), P. 1782 - 1782
Published: April 2, 2025
Self-assembled
monolayers
(SAMs)
have
gained
significant
attention
as
an
interfacial
engineering
strategy
for
perovskite
solar
cells
(PSCs)
due
to
their
efficient
charge
transport
ability
and
work
function
tunability.
While
solution-based
methods
such
dip-coating
spin-coating
are
widely
used
SAM
deposition,
challenges
non-uniform
coverage,
solvent
contamination,
limited
control
over
molecular
orientation
hinder
scalability
reproducibility.
In
contrast,
vacuum
deposition
techniques,
including
thermal
evaporation,
overcome
these
limitations
by
enabling
the
formation
of
highly
uniform
materials
with
precise
thickness
arrangement.
Importantly,
chemical
interactions
between
layers,
coordination
bonding
Pb2+
ions,
play
important
role
in
passivating
surface
defects,
modulating
energy
levels,
promoting
crystallization.
These
not
only
enhance
wettability
but
also
improve
overall
quality
stability
films.
This
review
highlights
advantages
vacuum-deposited
SAMs,
strong
layers
improving
properties
critical
scalable
applications.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 24, 2025
Abstract
Self‐assembled
monolayers
(SAMs)
have
achieved
remarkable
success
in
the
realm
of
inverted
perovskite
solar
cells
(PSCs).
The
integration
two
distinct
SAMs,
referred
to
as
co‐SAM,
significantly
broadens
diversity
within
SAM
family
and
propels
enhancement
PSC
performance.
In
this
study,
a
co‐SAM
consisting
[4‐(3,6‐dimethoxy‐9H‐carbazol‐9‐yl)butyl]
phosphonic
acid
(MeO‐4PACz)
[2‐(3,6‐dimethyl‐9H‐carbazol‐9‐yl)
ethyl]
(Me‐2PACz)
is
sequentially
deposited
achieve
precisely
controlled
nanostructure.
It
unveiled
that
initial
deposition
step
governs
surface
wettability,
whereas
subsequent
dictates
energy
level
alignment.
Leveraging
meticulously
regulated
blade‐coated
attains
an
impressive
efficiency
25.01%,
retains
95.4%
its
after
2500
h
under
illumination,
maintains
86.7%
≈2000
at
85
°C.
This
research
delineates
novel
pathway
facilitate
large‐scale
manufacturing
PSCs.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 29, 2025
Abstract
Perovskite
solar
cells
(PSCs)
have
rapidly
gained
prominence
as
a
leading
candidate
in
the
realm
of
solution‐processable
third‐generation
photovoltaic
(PV)
technologies.
In
high‐efficiency
inverted
PSCs,
self‐assembled
monolayers
(SAMs)
are
often
used
hole‐selective
layers
(HSLs)
due
to
advantages
high
transmittance,
energy
level
matching,
low
non‐radiative
recombination
loss,
and
tunable
surface
properties.
However,
SAMs
been
recognized
suffer
from
some
shortcomings,
such
incomplete
coverage,
weak
bonding
with
substrate
or
perovskite,
instability,
so
on.
The
combination
different
so‐called
co‐SAM
is
an
effective
strategy
overcome
this
challenge.
Perspective,
latest
achievements
molecule
design,
deposition
method,
working
principle,
application
discussed.
This
comprehensive
overview
milestones
advancing
research
field,
coupled
in‐depth
analysis
improved
interface
properties
using
approach,
aims
offer
valuable
insights
into
key
design
principles.
Furthermore,
lessons
learned
will
guide
future
development
SAM‐based
HSLs
perovskite‐based
optoelectronic
devices.
