Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 14, 2024
Abstract
The
synthesis
of
multicomponent
metal
halide
perovskites
(MHPs)
by
cationic
and/or
alloying
allows
band
gap
tuning,
optimizing
performance
and
improving
stability.
However,
these
materials
often
suffer
from
compositional,
structural,
property
inhomogeneities,
leading
to
uneven
carrier
transport
significant
non‐radiative
recombination
losses
in
lead
perovskites.
While
many
researchers
have
focused
on
the
aggregation
perovskite
ions,
impact
surface
potential
has
received
relatively
less
attention.
In
this
study,
multifunctional
ionic
liquid
1‐allyl‐3‐methylimidazole
dicyanamide
(AMI)
is
introduced
into
precursor
effectively
regulate
layer.
This
approach
inhibits
recombination,
enhances
injection,
improves
device
performance.
Surface
homogenization
within
layer
leads
simultaneous
improvements
both
efficiency
stability
solar
cells.
For
wide‐bandgap
(1.81
eV),
optimal
power
conversion
(PCE)
reaches
20.44%,
with
an
open‐circuit
voltage
(
V
oc
)
1.339
V,
a
short‐circuit
current
density
J
sc
17.92
mA
cm
−2
,
high
fill
factor
(FF)
85%.
strategy
also
proved
effective
for
conventional
bandgap
cells
(PSCs)
(1.53
increase
performance,
PCE
increasing
23.22%
25.41%.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 6, 2025
Effective
modifications
for
the
buried
interface
between
self-assembled
monolayers
(SAMs)
and
perovskites
are
vital
development
of
efficient,
stable
inverted
perovskite
solar
cells
(PSCs)
their
tandem
photovoltaics.
Herein,
an
ionic-liquid-SAM
hybrid
strategy
is
developed
to
synergistically
optimize
uniformity
SAMs
crystallization
above.
Specifically,
ionic
liquid
1-butyl-3-methyl-1H-imidazol-3-iumbis((trifluoromethyl)sulfonyl)amide
(BMIMTFSI)
incorporated
into
SAM
solution,
enabling
reduced
surface
roughness,
improved
wettability,
a
more
evenly
distributed
potential
film.
Leveraging
this
optimized
substrate,
favorable
growth
high-quality
crystals
achieved.
Furthermore,
introduced
functional
ions
readily
bond
with
perovskites,
effectively
passivating
undesirable
cation
or
halide
vacancies
near
interface.
Remarkably,
high
power
conversion
efficiencies
(PCEs)
25.68%
22.53%
obtained
normal-bandgap
(≈1.55
eV)
wide-bandgap
(WBG)
(≈1.66
PSCs
along
operational
stability.
Additionally,
champion
PCE
19.50%
achieved
semitransparent
WBG
PSCs,
further
delivering
impressive
28.34%
integrated
four-terminal
photovoltaics
when
combined
CuInGaSe2
cells.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 3, 2025
Abstract
The
inverted
perovskite
solar
cells
based
on
hole‐selective
self‐assembled
molecules
(SAMs)
have
been
setting
new
efficiency
benchmarks.
However,
the
agglomeration
of
SAM
and
lack
defect
passivation
ability
are
two
critical
issues
that
need
to
be
addressed.
It
is
demonstrated
by
blending
co‐adsorbent
4‐phosphoricbutyl
ammonium
iodide
(4PBAI)
with
4‐(7H‐dibenzo[c,g]carbazole‐7‐yl)
phosphonic
acid
(4PADCB),
enhanced
homogeneity,
conductivity,
better
energy
levels
can
realized
for
co‐SAM
contact.
functional
group
4PBAI
also
effectively
passivate
defects
at
buried
interface
template
high‐quality
growth.
Assisted
synergistic
top
modification,
power
conversion
optimized
device
reaches
24.96%,
which
retain
95%
initial
after
1200
h
in
ambient
unencapsulated
device.
findings
suggest
a
well‐designed
address
limitations
further
enhance
performance
cutting‐edge
SAMs.
Advanced Optical Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 5, 2025
Abstract
Controlling
the
formation
of
hybrid
perovskite
thin
films
is
crucial
in
obtaining
high‐performance
optoelectronic
devices,
since
factors
like
morphology
and
film
thickness
have
a
profound
impact
on
film's
functionality.
For
light‐emitting
applications
grain
sizes
sub‐micrometer‐range
previously
shown
enhanced
brightness.
It
therefore
to
develop
simple,
yet
reliable
methods
produce
such
films.
Here,
solution‐based
synthesis
protocol
for
on‐substrate
MAPbBr
3
(MA
=
methylammonium)
nanostructures
by
adding
bifunctional
rac
‐3‐aminobutyric
acid
precursor
solution
reported.
This
route
improves
key
optical
properties
as
photoluminescence
quantum
yields
life
times
excited
states
inducing
controlled
slow‐down
suppressing
agglomeration
effects.
In
situ
spectroscopy
reveals
delayed
slowed
down
crystallization
process,
which
achieves
structures
with
much
reduced
defect
densities.
Further,
aggregation
can
be
amount
amino
added
adjusting
allows
cubic
crystallites
targeted
size
from
nanometer
micrometer
scales.
The
nanocrystalline
samples
show
amplified
spontaneous
emission
(ASE)
intensities,
ASE
thresholds
purer
signals,
compared
pristine
films,
even
under
intense
driving,
making
them
promising
lasing
applications.
Journal of Materials Chemistry C,
Год журнала:
2024,
Номер
12(29), С. 10837 - 10856
Опубликована: Янв. 1, 2024
While
perovskite
solar
cells
(PSCs)
have
achieved
remarkable
power
conversion
efficiencies
(PCEs)
exceeding
26.1%,
significant
challenges
remain
in
enhancing
their
efficiency
and
stability
for
commercial
viability.
Nano-Micro Letters,
Год журнала:
2025,
Номер
17(1)
Опубликована: Фев. 11, 2025
Abstract
Despite
significant
advancements
in
the
power
conversion
efficiency
(PCE)
of
perovskite/silicon
tandem
solar
cells,
improving
carrier
management
top
cells
remains
challenging
due
to
defective
dual
interfaces
wide-bandgap
perovskite,
particularly
on
textured
silicon
surfaces.
Herein,
a
series
halide
ions
(Cl
−
,
Br
I
)
substituted
piperazinium
salts
are
designed
and
synthesized
as
post-treatment
modifiers
for
perovskite
Notably,
chloride
induces
an
asymmetric
bidirectional
distribution
from
bottom
surface,
with
large
cations
concentrating
at
surface
small
anions
migrating
downward
accumulate
buried
interface.
This
results
effective
dual-interface
defect
passivation
energy
band
modulation,
enabling
(1.68
eV)
achieve
PCE
22.3%
record
product
open-circuit
voltage
×
fill
factor
(84.4%
relative
Shockley–Queisser
limit).
Furthermore,
device
retains
91.3%
its
initial
after
1200
h
maximum
point
tracking
without
encapsulation.
When
integrated
double-textured
heterojunction
remarkable
31.5%
is
achieved
1.04
cm
2
monolithic
cell,
exhibiting
excellent
long-term
operational
stability
(
T
80
=
755
h)
encapsulation
ambient
air.
work
provides
convenient
strategy
engineering
making
high-efficiency
stable
platforms.
