Nature Communications,
Год журнала:
2025,
Номер
16(1)
Опубликована: Янв. 17, 2025
Interfacial
trap-assisted
nonradiative
recombination
hampers
the
development
of
metal
halide
perovskite
solar
cells
(PSCs).
Herein,
we
report
a
rationally
designed
universal
passivator
to
realize
highly
efficient
and
stable
single
junction
tandem
PSCs.
Multiple
defects
are
simultaneously
passivated
by
synergistic
effect
anion
cation.
Moreover,
defect
healing
is
precisely
modulated
carefully
controlling
number
hydrogen
atoms
on
cations
steric
hindrance.
Due
minimized
interfacial
energy
loss,
L-valine
benzyl
ester
p-toluenesulfonate
(VBETS)
modified
inverted
PSCs
deliver
power
conversion
efficiency
(PCE)
26.28%
using
vacuum
flash
processing
technology.
suppressing
carrier
recombination,
large-area
modules
with
an
aperture
area
32.144
cm2
perovskite/Si
coupled
VBETS
passivation
PCE
21.00%
30.98%,
respectively.
This
work
highlights
critical
role
hindrance
in
designing
molecular
modulators
advance
stability
Angewandte Chemie International Edition,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 3, 2025
Abstract
The
advancement
of
tin‐based
perovskite
solar
cells
(TPSCs)
has
been
severely
hindered
by
the
poor
controllability
crystal
growth
and
energy
level
mismatch
between
fullerene‐based
electron
transport
layer
(ETL).
Here,
we
synthesized
three
cis‐configured
pyridyl‐substituted
fulleropyrrolidines
(PPF),
specifically
2‐pyridyl
(PPF2),
3‐pyridyl
(PPF3),
4‐pyridyl
(PPF4),
utilized
them
as
precursor
additives
to
regulate
crystallization
kinetics
during
film
formation.
spatial
distance
two
pyridine
groups
in
PPF2,
PPF3,
PPF4
increases
sequentially,
enabling
interact
with
more
colloidal
particles.
These
interactions
effectively
enlarge
colloid
size
decelerate
rate
perovskite,
resulting
high‐quality
PPF4‐based
films
reduced
defect
density
lower
exciton
binding
energy.
Additionally,
incorporated
a
well‐defined
fullerene
bis‐adduct,
C
60
BB,
an
interlayer
PCBM
layers
optimize
alignment.
Through
synergistic
effects
our
champion
device
achieved
efficiency
16.05
%
(certified:
15.86
%),
surpassing
16
bottleneck
setting
new
benchmark
for
TPSCs.
Moreover,
devices
exhibited
outstanding
stability,
retaining
99
their
initial
after
600
hours
maximum
power
point
tracking
under
1
sun
condition.
Science,
Год журнала:
2025,
Номер
387(6731), С. 284 - 290
Опубликована: Янв. 16, 2025
Formamidinium
lead
triiodide
(FAPbI
3
)
is
considered
the
most
promising
composition
for
high-performing
single-junction
solar
cells.
However,
nonalloyed
α-FAPbI
metastable
with
respect
to
photoinactive
δ-phase.
We
have
developed
a
kinetic
modulation
strategy
fabricate
high-quality
and
stable
films,
assisted
by
cogenetic
volatile
iodine
intercalation
decalation.
The
of
facilitated
formation
corner-sharing
Pb-I
framework
building
blocks
reduced
barrier
formation,
whereas
decalation
improved
final
perovskite
film
quality
in
terms
purity
overall
homogeneity.
Solar
cells
based
on
this
(free
other
extrinsic
ions)
achieved
power
conversion
efficiency
>24%.
devices
also
exhibited
excellent
durability,
retaining
99%
their
original
after
operating
more
than
1100
hours
at
85°
±
5°C
under
illumination.
Nature Communications,
Год журнала:
2025,
Номер
16(1)
Опубликована: Янв. 17, 2025
Interfacial
trap-assisted
nonradiative
recombination
hampers
the
development
of
metal
halide
perovskite
solar
cells
(PSCs).
Herein,
we
report
a
rationally
designed
universal
passivator
to
realize
highly
efficient
and
stable
single
junction
tandem
PSCs.
Multiple
defects
are
simultaneously
passivated
by
synergistic
effect
anion
cation.
Moreover,
defect
healing
is
precisely
modulated
carefully
controlling
number
hydrogen
atoms
on
cations
steric
hindrance.
Due
minimized
interfacial
energy
loss,
L-valine
benzyl
ester
p-toluenesulfonate
(VBETS)
modified
inverted
PSCs
deliver
power
conversion
efficiency
(PCE)
26.28%
using
vacuum
flash
processing
technology.
suppressing
carrier
recombination,
large-area
modules
with
an
aperture
area
32.144
cm2
perovskite/Si
coupled
VBETS
passivation
PCE
21.00%
30.98%,
respectively.
This
work
highlights
critical
role
hindrance
in
designing
molecular
modulators
advance
stability
