Angewandte Chemie,
Год журнала:
2024,
Номер
136(51)
Опубликована: Авг. 16, 2024
Abstract
The
electron
extraction
from
perovskite/C
60
interface
plays
a
crucial
role
in
influencing
the
photovoltaic
performance
of
inverted
perovskite
solar
cells
(PSCs).
Here,
we
develop
one‐stone‐for‐three‐birds
strategy
via
employing
novel
fullerene
derivative
bearing
triple
methyl
acrylate
groups
(denoted
as
C
‐TMA)
multifunctional
interfacial
layer
to
optimize
at
interface.
It
is
found
that
‐TMA
not
only
passivates
surface
defects
coordination
interactions
between
C=O
and
Pb
2+
cations
but
also
bridge
transfer
.
Moreover,
it
effectively
induces
secondary
grain
growth
film
through
strong
bonding
effect,
this
phenomenon
has
never
been
observed
prior
art
reports
on
related
studies.
combination
above
three
upgrades
enables
improved
quality
with
increased
size
enhanced
crystallinity.
With
these
advantages,
treated
PSC
devices
exhibit
much
higher
power
conversion
efficiency
(PCE)
24.89
%
than
control
(23.66
%).
Besides,
benefits
thermal
stability
devices,
retaining
over
90
its
initial
after
aging
85
°C
for
1200
h,
primarily
due
reinforced
quality.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 9, 2025
Developing
strategies
to
manage
ion-migration-induced
phase
segregation
in
wide-bandgap
(WBG)
perovskites
is
crucial
for
achieving
high-performance
perovskite-silicon
tandem
solar
cells
(TSCs).
However,
maintaining
continuous
suppression
of
from
the
film
crystallization
process
device
operation
remains
a
significant
challenge.
The
present
study
demonstrates
an
efficient
strategy
activating
halogen
circulation
WBG
perovskite
by
using
agents
(HCA)
N-halosuccinimide
molecules
as
sustainable
stabilizers,
order
achieve
dynamic
equilibrium
within
precursor
solution
and
film,
which
blocks
migration
path
Br-/I-
ions
both
aging
perovskites.
Attempts
on
situ
monitoring
halide
visually
verified
enhanced
stability
activated
films
devices.
Consequently,
work
achieves
champion
efficiency
up
23.25%
with
low
Voc
loss
0.39
V
1.67-eV-bandgap
device,
HCA-based
devices
can
maintain
88%
93%
their
initial
efficiencies
over
1000
h
under
illumination
2500
at
85
°C
N2
atmosphere,
respectively.
As
proof
concept,
perovskite/silicon
monolithic
TSCs
are
fabricated
demonstrate
high
1.99
power
conversion
33.2%.
Energy & Environmental Science,
Год журнала:
2024,
Номер
17(19), С. 7271 - 7280
Опубликована: Янв. 1, 2024
p–i–n
inorganic
PSCs
with
ytterbium
cation
surface
treatment
achieve
an
efficiency
of
21.4%
enhanced
stability,
benefiting
from
improved
interfacial
band
energy
alignment,
reduced
defects
and
iodide
migration.
Mixed
halide
wide-bandgap
(WBG)
perovskites,
widely
used
as
a
top-cell
absorber
in
tandem
solar
cells,
exhibit
severe
photoinduced
phase
segregation.
A
feasible
solution
is
to
exploit
pure-iodide
WBG
essentially
increasing
Cs
content
instead
of
Br
achieve
bandgap
widening.
However,
the
efficiency
pure-iodine
perovskite
cells
(PSCs)
reported
so
far
has
been
inferior
that
typical
mixed
PSCs
due
complex
nucleation
and
transition
processes,
leading
poor
crystallization
quality
high
density
defect
states
perovskites.
Here,
by
combining
lead
thiocyanate
(Pb(SCN)2)
oleylamine
hydrochloride
(OAmCl)
with
Cs0.3DMA0.2MA0.5PbI3
precursor,
homogeneous
distribution
obtained,
resulting
enhanced
reduction
excess
source
defects.
With
this
approach,
film
improved
along
fewer
surface-bulk
defects
well
beneficial
surface
electronic
properties.
As
result,
deliver
21.55%,
an
extremely
fill
factor
86.03%,
superior
photostability.
The
target
fundamentally
free
segregation
under
continuous
light
for
12
h
(AM
1.5
G
illumination,
xenon
lamp,
1
sun).
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 7, 2025
Abstract
Tandem
solar
cells
(TSCs)
based
on
wide
bandgap
(WBG)
perovskites
have
gained
significant
attention
for
their
higher
power
conversion
efficiency
(PCE)
compared
to
single‐junction
cells.
The
role
of
WBG
perovskite
(PSCs)
as
the
sub‐cell
in
tandem
consists
absorbing
high‐energy
photons
and
producing
open‐circuit
voltages
(
V
OC
).
However,
PSCs
face
serious
phase
separation
issues,
resulting
poor
long‐term
stability
substantial
loss
TSCs.
In
response,
researchers
developed
a
range
strategies
mitigate
these
challenges,
showing
promising
progress,
comprehensive
review
is
expected.
this
review,
we
discuss
mechanism
organic–inorganic
hybrids
all‐inorganic
perovskites.
Additionally,
conduct
an
in‐depth
investigation
various
enhance
stability,
including
component
engineering,
additive
interface
dimension
control,
solvent
encapsulation.
Furthermore,
application
TSCs
summarized
detail.
Finally,
perspectives
are
provided
offer
guidance
development
efficient
stable
field
Abstract
Metal
halide
perovskite
solar
cells
(PSCs)
are
emerging
as
promising
candidates
for
next‐generation
photovoltaics
aimed
at
green
energy
production.
However,
during
solution‐processed
film
deposition,
the
distinct
rheological
behaviors
of
blade
coating,
compared
to
spin
result
in
less
controlled
crystallization,
leading
inferior
quality
and
limiting
power
conversion
efficiency
(PCE)
blade‐coated
photovoltaics.
In
this
work,
ethylene
glycol
(EG)
is
introduced
an
inert
co‐solvent
precursor
solutions
achieve
high‐quality
films
via
coating.
The
high
viscosity
EG
facilitates
deposition
thick
ranging
from
400
2000
nm,
while
its
low
vapor
pressure
effectively
suppresses
premature
nucleation
before
vacuum
flashing,
with
enhanced
morphology.
As
a
result,
PSCs
impressive
champion
PCE
24.10%
retain
89%
their
initial
after
600
h
continuous
operation.
Cesium
lead
triiodide
(CsPbI3)
perovskitesare
promising
candidates
for
top
cells
in
tandem
solar
owing
to
their
superior
thermal
and
photostability.
However,
practical
application
is
hindered
by
poor
phase
stability,
as
CsPbI3
readily
converts
from
the
perovskite
non-perovskite
phase.
To
improve
both
stability
efficiency
without
significantly
altering
bandgap,
some
fraction
of
formamidinium
(FA+)
introduced
into
CsPbI3.
This
study
demonstrates
that
a
quasi-2D
intermediate
effectively
modulates
crystallization
process
improves
film
quality
Cs-rich,
pure-iodide
wide-bandgap
perovskites,
leading
significant
enhancement
open-circuit
voltage
(VOC).
Propylphenylammonium
chloride
(PPACl)
facilitates
formation
PPA2(CsxFA1-x)n-1PbnI3n+1
phase,
which
acts
scaffold
promote
oriented
3D
perovskites.
can
mitigate
structural
distortion
lattice
alleviating
mismatch,
typically
associated
with
dimethylammonium
(DMAPbI3)
final
α-phase
transition.
Thus,
approach
enhances
crystallinity
morphology,
reducing
defect
density
VOC
loss
perovskite.
Consequently,
optimized
Cs0.7FA0.3PbI3
(PSCs)
achieve
power
conversion
21.42%,
marking
one
highest
efficiencies
reported
Cs-rich
PSCs
under
standard
AM
1.5
G
illumination.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 8, 2025
Abstract
The
development
of
high‐quality
wide‐bandgap
(WBG)
perovskite
films
is
essential
for
achieving
high‐efficiency
and
stable
tandem
solar
cells
(TSCs).
However,
WBG
perovskites
often
suffer
from
high
trap‐state
densities
significant
non‐radiative
recombination,
leading
to
substantial
voltage
losses.
To
address
these
challenges,
aspartame
(ASP),
a
food
sweetener,
designed
serve
as
multifunctional
additive
regulate
the
microstructure
precursor
solution
optimize
crystallization
dynamics,
enabling
fabrication
films.
resulting
exhibit
reduced
defect
density
enhanced
charge
extraction
properties.
Consequently,
single‐junction
(PSCs)
with
bandgap
1.67
eV
achieve
power
conversion
efficiency
(PCE)
23.20%,
while
perovskite/Si
TSCs
reach
PCE
30.68%.
Furthermore,
ASP‐treated
devices
photostability
operational
durability,
retaining
95%
their
initial
after
1900
h
in
ambient
conditions.
This
work
demonstrates
potential
molecular
engineering
through
zwitterionic
additives
optoelectronic
properties
stability
films,
paving
way
high‐performance
TSCs.
