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.
Solar RRL,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 6, 2025
Perovskite/silicon
tandem
solar
cells
hold
great
promise
for
achieving
high
power
conversion
efficiencies
(PCEs).
However,
n–
i
–p
devices
generally
underperform
compared
to
p–
–n
configurations,
largely
due
difficulties
in
depositing
high‐quality,
conformal
electron‐transport
layers
(ETLs)
on
rough,
pyramid‐structured
silicon
surfaces.
Atomic
layer
deposited
(ALD)‐SnO
x
is
well
suited
as
an
ETL
its
ability
uniformly
coat
textured
surfaces,
but
density
of
defects
significantly
limits
efficiency
conventional
solution‐processed
SnO
.
In
this
study,
ultrathin
evaporated
PbS
introduced
passivate
surface
ALD‐SnO
effectively
addresses
interfacial
at
the
/perovskite
interface,
such
oxygen
vacancies
and
uncoordinated
Pb
2+
Moreover,
improves
energy‐level
alignment
lattice
matching
enhancing
device
performance.
With
bridging
effect
PbS,
a
wide‐bandgap
(1.68
eV)
single‐junction
perovskite
cell
achieved
PCE
20.39%
open‐circuit
voltage
(
V
OC
)
1.22
V,
control
with
17.42%
1.16
V.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 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.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 27, 2025
Abstract
PEDOT:PSS
thin
film
is
commonly
used
as
a
hole
injection
layer
(HIL)
in
quantum‐dot
light‐emitting
diodes
(QLEDs).
However,
the
realization
of
QLEDs‐based
displays
remains
challenging
due
to
complex
effects
acidic
surfaces
on
device
performance.
Here,
it
demonstrated
that
operation
QLEDs,
metal
diffusion
from
electrodes
into
QD
films
can
result
exciton
quenching.
By
applying
an
organic
molecule
[4‐(3,6‐dibromo‐9H‐carbazol‐9‐yl)butyl]phosphonic
acid
(2BrCzPA),
treatment
ITO,
The
role
traditional
be
replaced.
formation
strong
dipoles
at
ITO/2BrCzPA
self‐assembled
molecules
(SAM)
interfaces
exhibits
excellent
abilities.
This
method
leads
more
efficient
generation
and
outstanding
operational
stability,
enabling
QLEDs
exhibit
superior
Specifically,
high
external
quantum
efficiencies
15.28%,
12.63%,
14.83%
are
achieved
brightness
34
250,
22
640,
9147
cd
m
−2
for
green,
blue,
red
respectively.
work
presents
high‐performance
ITO/SAM
QLED
eliminates
unstable
better
which
promote
practical
application
technology
solid‐state
lighting.
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.
