Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 9, 2024
Carbonyl-containing
materials
employed
in
state-of-the-art
hybrid
lead
halide
perovskite
solar
cells
(PSCs)
exhibit
a
strong
structure-dependent
electron
donor
effect
that
predominates
defect
passivation.
However,
the
impact
of
molecular
spatial
conformation
on
efficacy
carbonyl-containing
passivators
remains
ambiguous,
hindering
advancement
design
for
passivating
materials.
Herein,
we
show
altering
torsion
angle
aromatic
ketones
from
twisted
to
planar
configurations,
as
seen
benzophenone
(BP,
27.2°),
anthrone
(AR,
15.3°),
and
9-fluorenone
(FO,
0°),
leads
notable
increment
cloud
density
around
carbonyl
group,
thus
improving
passivation
ability
lead-based
defects.
Consequently,
PSC
performance
also
relies
ketones,
with
coplanar
FO-based
achieving
highest
power
conversion
efficiency
(PCE)
25.13%
retaining
92%
its
initial
after
1000
h
operation
at
maximum
point
under
continuous
1-sun
illumination
(ISOS-L-1I).
Moreover,
mini-module
(14.0
cm
Materials,
Journal Year:
2024,
Volume and Issue:
17(23), P. 5739 - 5739
Published: Nov. 23, 2024
Perovskite
solar
cells
are
among
the
most
promising
renewable
energy
devices,
and
enhancing
their
stability
is
crucial
for
commercialization.
This
research
presents
use
of
L-Ergothioneine
(L-EGT)
as
a
passivation
material
in
perovskite
cells,
strategically
placed
between
electron
transport
layer
absorber
to
mitigate
defect
states
at
heterojunction
interface.
Surface
analysis
reveals
that
introducing
L-EGT
significantly
improves
quality
film.
X-ray
diffraction
indicates
slows
down
film
degradation
successfully
suppresses
secondary
phase
formation.
photoelectron
spectroscopic
shows
oxygen
vacancies
lattice
decrease
from
29.21%
15.81%,
while
Ti
Physica Scripta,
Journal Year:
2024,
Volume and Issue:
99(9), P. 095962 - 095962
Published: Aug. 8, 2024
Abstract
Perovskite-based
solar
cells
(PSCs)
have
demonstrated
remarkable
high
power
conversion
efficiency
in
recent
years.
However,
the
use
of
mono-organic
cations
(such
as
Methylammonium
or
Formamidinium)
limits
potential
for
large-scale
development
due
to
degradation
under
environmental
conditions.
The
incorporation
multi-cations
has
emerged
a
strategy
enhance
both
performance
and
stability.
cesium
(Cs)
cation
represents
solid
alternative
partial
substitution
Formamidinium.
initial
concentration
precursors
solution
is
often
reported
without
establishing
final
present
thin
films.
Herein,
Cs
into
FAPbI
3
structure
produce
x
FA
(1-x)
PbI
perovskite
with
different
values
using
one-step
spin
coating
process
demonstrated.
Assessing
structural
optical
properties,
it
that
films
behave
according
Vegard’s
law
between
0
0.66.
In
particular,
,
an
0.33
exhibits
cubic
lattice
parameter
6.28
Å,
lower
than
but
higher
CsPbI
.
This
showed
stability
dark
phase
ambient
conditions
extended
periods.
addition,
this
material
bandgap
1.5
eV,
making
suitable
cells.
Inorganics,
Journal Year:
2024,
Volume and Issue:
12(8), P. 214 - 214
Published: Aug. 8, 2024
Perovskite
solar
cells
(PSCs)
have
demonstrated
remarkable
progress
in
performance
recent
years,
which
has
placed
perovskite
materials
as
the
leading
promising
for
future
renewable
energy
applications.
The
solvent
additive
technique
composition
is
a
simple
but
effective
process
used
to
improve
surface
quality
of
layers
and
charge
transport
processes
essential
functions
PSCs.
These
additives
can
considerable
effect
on
topography,
crystallinity,
properties
active
layer,
ultimately
influencing
stability
A
“two-step
spin
coating”
deposition
method
make
PSCs
ambient
air
laboratory
conditions
was
employed.
Acetonitrile
(ACN)
conventionally
utilized
chemical
enhance
In
this
study,
our
film
exhibited
that
incorporation
ACN
triple
cation
precursor
led
passivation
defects
noticeable
increase
size
crystal
grains
films,
enhanced
devices.
efficiency
achieved
prepared
with
10%
15.35%,
30%
higher
than
devices
without
ACN.
addition,
shown
lower
hysteresis
index
more
stable
behavior
compared
This
work
presents
an
easy,
low-cost
fabrication
high
under
conditions.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 9, 2024
Carbonyl-containing
materials
employed
in
state-of-the-art
hybrid
lead
halide
perovskite
solar
cells
(PSCs)
exhibit
a
strong
structure-dependent
electron
donor
effect
that
predominates
defect
passivation.
However,
the
impact
of
molecular
spatial
conformation
on
efficacy
carbonyl-containing
passivators
remains
ambiguous,
hindering
advancement
design
for
passivating
materials.
Herein,
we
show
altering
torsion
angle
aromatic
ketones
from
twisted
to
planar
configurations,
as
seen
benzophenone
(BP,
27.2°),
anthrone
(AR,
15.3°),
and
9-fluorenone
(FO,
0°),
leads
notable
increment
cloud
density
around
carbonyl
group,
thus
improving
passivation
ability
lead-based
defects.
Consequently,
PSC
performance
also
relies
ketones,
with
coplanar
FO-based
achieving
highest
power
conversion
efficiency
(PCE)
25.13%
retaining
92%
its
initial
after
1000
h
operation
at
maximum
point
under
continuous
1-sun
illumination
(ISOS-L-1I).
Moreover,
mini-module
(14.0
cm
