Abstract
Suppressing
defects
at
the
interface
between
TiO
2
electron
transport
layer
(ETL)
and
perovskite
film
is
critical
for
high
efficiency
stable
solar
cells
(PSCs).
Herein,
a
siloxane
derivative
diethylphosphatoethylsilicic
acid
(PSiOH)
developed
to
modify
of
ETL/FA
0.83
Cs
0.17
PbI
3
perovskite.
Comprehensive
characteristics
reveal
that
silicon
hydroxyl
(SiOH)
in
PSiOH
can
reduce
surface
defects,
improve
electrical
properties
optimize
energy
band
structure
by
forming
SiOTi
bond,
while
phosphate
bond
(PO)
passivate
Pb‐related
on
bottom
surface.
Consequently,
PSiOH‐modified
PSCs
yield
remarkable
power
conversation
24.20%
improved
air,
thermal,
or
illumination
stabilities.
This
study
provides
insight
into
passivation
buried
efficient
PSCs.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(33)
Опубликована: Апрель 30, 2024
Abstract
Organic
self‐assembled
molecules
(OSAMs)
based
hole‐transporting
materials
play
a
pivotal
role
in
achieving
highly
efficient
and
stable
inverted
perovskite
solar
cells
(IPSCs).
However,
the
reported
carbazol‐based
OSAMs
have
serious
drawbacks,
such
as
poor
wettability
for
solution
spreading
due
to
nonpolar
surface,
worse
matched
energy
arrangement
with
perovskite,
limited
molecular
species,
which
greatly
limit
device
performance.
To
address
above
problems,
novel
OSAM
[4‐(3,6‐glycol
monomethyl
ether‐9H‐carbazol‐9‐yl)
butyl]phosphonic
acid
(GM‐4PACz)
was
synthesized
material
by
introducing
glycol
ether
(GM)
side
chains
at
carbazolyl
unit.
GM
groups
enhance
surface
of
Indium
Tin
Oxide
(ITO)/SAM
substrate
facilitate
nucleation
growth
up
film,
suppress
cation
defects,
release
residual
stress
SAM/perovskite
interface,
evaluate
level
matching
perovskite.
Consequently,
GM‐4PACz
IPSC
achieves
champion
PCE
25.52
%,
respectable
open‐circuit
voltage
(
V
OC
)
1.21
V,
high
stability,
possessing
93.29
%
91.75
their
initial
efficiency
after
aging
air
2000
h
or
tracking
maximum
power
point
1000
h,
respectively.
ACS Energy Letters,
Год журнала:
2024,
Номер
9(4), С. 1888 - 1894
Опубликована: Апрель 2, 2024
The
power
conversion
efficiency
(PCE)
of
spin-coated,
≪1
cm2,
perovskite
solar
cells
has
exceeded
25%.
PCEs
the
large-area
made
by
scalable
deposition
techniques,
however,
are
typically
lower.
One
frequent
element
to
improving
performance
in
perovskites
been
utilization
nonscalable
and
low
materials
utilization,
spin-based
passivation
treatments
reduce
traps
defects
thin
film
absorber
layers.
Herein,
we
report
a
more
sustainable
technique
for
films
via
subsequent
linear
slot-die
coating
benzylammonium
iodide
(BAI)
passivant
formulation
on
surface
previously
deposited
BAI-passivated
demonstrate
apparent
larger
grain
size,
higher
photoluminescence
(PL)
intensity,
reduced
recombination
rates
as
evidenced
longer
PL
lifetimes,
better
spatial
uniformity.
champion
cell
with
optimized
BAI
exhibited
an
improved
PCE
∼20.3%,
compared
18.7%
control
device.
Advanced Materials,
Год журнала:
2023,
Номер
36(17)
Опубликована: Сен. 15, 2023
Multiple
cation-composited
perovskites
are
demonstrated
as
a
promising
approach
to
improving
the
performance
and
stability
of
perovskite
solar
cells
(PSCs).
However,
recipes
developed
for
fabricating
high-performance
in
laboratories
always
not
transferable
large-scale
production,
crystallization
is
highly
sensitive
processing
conditions.
Here,
using
an
situ
optical
method,
ambient
temperature
effect
on
process
multiple
investigated.
It
found
that
typical
solvent-coordinated
intermediate
phase
methylammonium
lead
iodide
(MAPbI
Advanced Materials,
Год журнала:
2023,
Номер
35(19)
Опубликована: Фев. 17, 2023
The
bulk
and
surface
of
a
perovskite
light-harvesting
layer
are
two
pivotal
aspects
affecting
its
carrier
transport
long-term
stability.
In
this
work,
lead(II)
2-ethylhexanoate
(LDE)
is
introduced
via
an
antisolvent
process
into
films
to
change
the
reaction
kinetics
crystallization
process,
resulting
in
high-quality
film.
Meanwhile,
carboxyl
functional
group
with
long
alkyl
chain
coordinates
Pb
cation,
reducing
defect
density
related
unsaturated
atoms.
Moreover,
chains
form
protecting
at
film
prevent
chemical
attack
by
water
air,
prolonging
lifetime
devices.
Consequently,
assembled
device
demonstrates
power
conversion
efficiency
(PCE)
24.84%.
Both
thermal
operational
stability
significantly
improved
due
reduced
ion-migration
channels.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 29, 2024
Narrow-bandgap
(NBG)
mixed
tin-lead
(Sn-Pb)
perovskite
solar
cells
(PSCs)
serve
as
crucial
top
subcells
in
all-perovskite
tandem
(TSCs).
However,
the
prevalent
use
of
poly(3,4-ethylenedioxythiophene):
poly(styrenesulfonate)
(PEDOT:
PSS)
hole
transport
layers
(HTLs)
NBG
PSCs
compromises
device
efficiency
and
stability.
To
address
this,
study
proposes
a
revitalizing
strategy
for
buried
interface
Sn-Pb
perovskites
by
directly
immersing
acetylcholine
chloride
(ACh)
into
PEDOT:
PSS.
ACh
acts
proficient
"diver,"
not
only
modulating
bottom
PSS
HTLs
but
also
facilitating
reconstruction
significantly
enhancing
quality
layers.
This
intervention
with
prevents
Sn
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 3, 2025
Abstract
Rational
regulation
of
Me‐4PACz/perovskite
interface
has
emerged
as
a
significant
challenge
in
the
pursuit
highly
efficient
and
stable
perovskite
solar
cells
(PSCs).
Herein,
an
organometallic
molecule
aluminum
glycinate
(AG)
that
contained
amine
(‐NH
2
)
hydroxyl
(Al‐OH)
groups
is
developed
to
tailor
buried
minimize
interface‐driven
energy
losses.
The
Al‐OH
selectively
bonded
with
unanchored
O═P‐OH
bare
NiO‐OH
optimize
surface
morphology
levels,
while
‐NH
group
interacted
specifically
Pb
2+
retard
crystallization,
passivate
Pb‐related
defects,
release
residual
stress.
These
interactions
facilitate
carrier
extraction
reduce
losses,
thereby
realizing
balanced
charge
transport.
Consequently,
AG‐modified
narrow
bandgap
(1.55
eV)
PSC
demonstrates
efficiency
26.74%
(certified
26.21%)
fill
factor
86.65%;
wide
(1.785
realizes
20.71%
champion
excellent
repeatability.
PSCs
maintain
91.37%,
91.92%,
92.00%
their
initial
after
aging
air
atmosphere,
nitrogen‐filled
atmosphere
at
85
°C,
continuously
tracking
maximum
power‐point
under
one‐sun
illumination
(100
mW
cm
−2
for
1200
h,
respectively.
Advanced Functional Materials,
Год журнала:
2023,
Номер
34(10)
Опубликована: Ноя. 21, 2023
Abstract
To
simultaneously
stabilize
cesium
lead
triiodide
(CsPbI
3
)
precursor
solution
and
passivate
the
defects
in
CsPbI
film
is
greatly
significant
for
achieving
highly
stable
efficient
perovskite
solar
cells
(PSCs).
Herein,
an
effective
redox
4‐fluorobenzothiohydrazide
(FBTH)
developed
to
iodine/lead‐related
high‐quality
film.
The
comprehensive
research
confirms
that
1)
a
new
compound
FBTH‐I
obtained
from
interaction
between
FBTH
molecular
iodine
(I
2
solution,
which
can
effectively
impede
formation
of
I
molecule
restrain
−
migration
by
forming
N–H···I
bond;
2)
also
Pb‐related
via
S···Pb
interaction.
Consequently,
PSC
based
on
FBTH‐treated
exhibits
fascinating
power
conversion
efficiency
(PCE)
21.41%,
one
highest
PCE
values
among
reported
pure
PSCs
so
far,
outstanding
stability
against
harsh
conditions,
such
as
thermal
annealing
continuous
light‐illumination.
