The
suboptimal
interfacial
quality
between
the
perovskite
absorption
layer
and
electron‐transport
constrains
performance
of
solar
cells.
Introducing
an
interface
passivation
is
generally
recognized
as
effective
method
for
addressing
this
issue.
A
uniform
film
with
a
large
area
can
be
prepared
using
evaporation
technique.
In
study,
we
designed
fabricated
inorganic
CsPbCl
3
by
coevaporation
PbCl
2
CsCl.
evaporated
passivator
exhibited
excellent
effects
relatively
low
thickness
sensitivity
to
device
performance.
As
result,
open‐circuit
voltage
cells
1.68
eV
absorber
was
improved
nearly
100
mV,
efficiency
achieved
21.84%,
ranking
highest
based
on
hybrid
evaporation‐solution
method.
proposed
approach
has
potential
applications
in
large‐area
Advanced Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 22, 2025
Abstract
An
ultra‐high
moisture
barrier
compact
SiN
X
film
can
be
achieved
from
solution‐processed
perhydropolysilazane
(PHPS)
through
vacuum
ultraviolet
(VUV)
light
exposure.
This
study
investigates
the
photochemical
reactions
and
photo‐densification
of
PHPS‐based
films
under
varying
VUV
intensities,
focusing
on
their
effects
performance.
Photo‐dehydrogenation
PHPS,
involving
N─H
Si─H
bond
cleavage,
is
efficient
unaffected
by
intensity.
However,
shows
a
strong
dependence
intensity,
particularly
above
290
mW
cm
−2
.
Higher
intensities
enhance
Si─N
alter
dynamics,
reduce
free
volume
rearrangement,
facilitating
rapid
network
reconstruction
essential
for
properties.
High‐power
at
309
establishes
new
benchmark
via
solution
processing,
achieving
record‐low
average
water
vapor
transmission
rate
(WVTR)
1.6
×
10
−5
g
m
day
−1
Films
are
produced
in
s
per
layer,
maintaining
property
3.8
The
optimal
refractive
index
top
30
nm
layer
1.74–1.77,
controlling
WVTR
within
,
ensuring
superior
performance
flexible
electronic
devices,
such
as
perovskite
solar
cells
organic
photovoltaics.
Abstract
Six
novel
organic
small
molecules,
TPA‐Sp‐PA
(
1
),
TPA‐Sp‐PE
1E
TPA‐T‐PA
2
TPA‐T‐PE
2E
TPA‐P‐PA
3
)
and
TPA‐P‐PE
3E
are
developed
applied
to
NiOx
films
as
self‐assembled
monolayers
(SAMs)
for
tin
perovskite
solar
cells
(TPSCs).
The
linker
between
acceptor
(phosphonic
acid
(PA)
or
phosphonic
ester
(PE))
donor
(triphenylamine
(TPA))
plays
an
important
role
in
facilitating
the
growth
of
high‐quality
using
a
two‐step
method.
Three
different
types
linkers,
phenyl
ring
(P),
thiophene
(T),
selenophene
(Sp),
studied,
which
Sp‐based
SAMs
provide
best
device
performance
with
achieving
PCE
8.7%,
its
acidic
analog,
reaching
maximum
8.3%.
Single
crystal
structures
successfully
obtained,
expectation
that
uniform
SAM
would
form
on
NiOx/ITO
substrate.
research
introduces
approach
enhance
TPSC
by
integrating
HTMs,
offering
promising
avenue
future
progress
technology
through
fabrication
technique.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 10, 2025
Abstract
The
dipole
moment
of
hole
transport
materials
(HTMs)
plays
a
vital
role
in
improving
the
photovoltaic
performance
inverted
perovskite
solar
cells
(PSCs).
However,
manipulating
moments
polymer
HTMs,
which
have
great
operational
and
bias
stability,
remains
challenging.
In
this
work,
HTMs
with
varying
lengths
glycol
side
chains,
PTAC‐DEG
PTAC‐TEG,
are
developed.
Using
random‐walk
model
extended
from
chain
conformation,
(with
shorter
chains)
achieves
higher
cumulative
than
PTAC‐TEG.
This
finding
can
be
attributed
to
fact
that
smaller
angles
enable
better
alignment,
while
larger
PTAC‐TEG
promote
aggregation
reduces
integrated
moment.
Perovskite
films
on
show
enhanced
crystallinity
lower
trap
density
due
improved
interfacial
charge
transport,
stronger
built‐in
electric
field,
affinity
dipole.
devices
achieve
PCE
25.8%,
is
among
highest
for
PSCs
based
exhibit
outstanding
stability
under
ISOS‐L‐3
(t
95
=
1300
h)
ISOS‐D‐3
1200
conditions.
study
highlights
modulation
as
promising
strategy
designing
efficient,
stable
cells.
The
suboptimal
interfacial
quality
between
the
perovskite
absorption
layer
and
electron‐transport
constrains
performance
of
solar
cells.
Introducing
an
interface
passivation
is
generally
recognized
as
effective
method
for
addressing
this
issue.
A
uniform
film
with
a
large
area
can
be
prepared
using
evaporation
technique.
In
study,
we
designed
fabricated
inorganic
CsPbCl
3
by
coevaporation
PbCl
2
CsCl.
evaporated
passivator
exhibited
excellent
effects
relatively
low
thickness
sensitivity
to
device
performance.
As
result,
open‐circuit
voltage
cells
1.68
eV
absorber
was
improved
nearly
100
mV,
efficiency
achieved
21.84%,
ranking
highest
based
on
hybrid
evaporation‐solution
method.
proposed
approach
has
potential
applications
in
large‐area
