Buried Interface Passivation with 3,4,5-Trifluorophenylboronic Acid Enables Efficient and Stable Inverted Perovskite Solar Cells
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 7, 2025
The
p-i-n
type
perovskite
solar
cells
with
a
nickel
oxide
(NiOx)
hole
transport
layer
in
combination
self-assembled
monolayers
(SAMs)
have
high
power
conversion
efficiency
(PCE)
of
over
26%.
surface
properties
the
SAM
significant
impact
on
growth
and
crystallization
film.
In
meanwhile,
defects
formed
during
thermal
annealing
at
interface
would
act
as
charge
recombination
centers,
decreasing
device
performance
stability.
To
address
these
issues,
this
work
introduces
3,4,5-trifluorophenylboronic
acid
(3,4,5-3FPBA)
interfacial
modification
to
improve
buried
that
enable
better
With
3,4,5-3FPBA
layer,
based
composition
Cs0.05(FA0.98MA0.02)0.95Pb(I0.95Br0.05)3,
increased
from
21.99%
24.02%.
A
similar
improvement
was
observed
for
Cs0.05FA0.82MA0.13Pb(I0.85Br0.15)3,
where
21.87%
22.76%.
universality
has
been
confirmed.
addition,
resulting
showed
improved
stability,
maintaining
75%
its
initial
after
500
h
continuous
heating
85
°C
unencapsulated
devices.
Язык: Английский
Peering into interfaces in perovskite solar cells: A first-principles perspective
Journal of Physics Condensed Matter,
Год журнала:
2025,
Номер
37(15), С. 151502 - 151502
Опубликована: Фев. 24, 2025
Over
the
past
decade,
perovskite
solar
cells
(PSCs)
have
experienced
a
rapid
development.
The
remarkable
increase
in
photoelectric
conversion
efficiency
demonstrates
great
promise
of
halide
perovskites
field
photovoltaics.
Despite
excellent
photovoltaic
performance,
further
efforts
are
needed
to
enhance
and
stability.
Interfacial
engineering
plays
crucial
role
enhancing
stability
PSCs,
enabling
champion
sustain
power
above
26%
for
over
1000
h.
As
powerful
theoretical
tool
characterizing
interfaces
first-principles
calculations
contributed
understanding
interfacial
properties
guiding
materials
design.
In
this
Perspective,
we
highlight
recent
progress
theoretically
profiling
between
other
materials,
focusing
on
effects
energy
band
alignment
electronic
structure
carrier
transport
at
interfaces.
These
help
reveal
atomic
interfaces,
provide
important
guidance
experimental
research
device
optimization.
We
also
analyze
potential
strategies
separation
discuss
challenges
accurate
modeling
which
will
understand
fundamental
physics
PSCs
guide
their
Язык: Английский
Additive strategy toward PbI2 film modifications for efficient perovskite solar cells fabricated in an air environment
Chemical Engineering Journal,
Год журнала:
2025,
Номер
unknown, С. 163006 - 163006
Опубликована: Апрель 1, 2025
Язык: Английский
Enhancing the Efficiency and Stability of CsFA‐Based Perovskite Solar Cells: Defect Passivation Using Indoline‐Based D–π–A Configured Molecule as Additive
Progress in Photovoltaics Research and Applications,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 25, 2025
ABSTRACT
The
employment
of
rationally
designed
functional
group‐bearing
molecules
as
additives
to
passivate
perovskite
defects
has
emerged
a
prevalent
trend.
Among
the
diverse
array
passivation
materials,
donor‐π‐acceptor
(D‐π‐A)
structured
have
attracted
widespread
attention
due
their
unique
ability
simultaneously
regulate
electron
donor
and
acceptor
units,
thereby
promoting
coordination
with
undercoordinated
ions
films.
In
this
work,
we
introduce
an
indoline‐based
D‐π‐A
molecule
(labeled
IHT)
efficient
passivator
for
solar
cells
(PSCs).
extraordinary
electron‐donating
capability
indoline
moiety
endows
electron‐withdrawing
cyanoacetic
acid
group
elevated
density,
which
is
in
favor
interaction
under‐coordinated
Pb
2+
lattice,
thus
reducing
density
defective
states
within
Experimental
outcomes
underscore
efficacy
IHT
additive
passivating
CsFA‐based
PSCs.
optimal
devices
demonstrate
remarkable
champion
photovoltaic
conversion
efficiency
21.25%,
notable
improvement
7.4%
compared
Cs‐FA‐PbI
3
devices.
stability
assessments
reveal
that
unencapsulated
IHT‐treated
retained
83%
initial
after
30
days
ambient
air,
whereas
untreated
exhibited
decline
54%
under
same
condition.
This
work
indicates
profound
significance
formation
dense
film
effect
well
enhancing
long‐term
Язык: Английский
Formamidinium In Situ Assistance for Buried Interfaces in Perovskite Solar Cells
Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 13, 2025
Abstract
Defects
at
the
buried
interface
and
interfacial
energy
misalignment
are
critical
challenges
in
perovskite
solar
cells
(PSCs),
causing
severe
carrier
nonradiative
recombination
introducing
degradation
centers
that
limit
device
performance.
In
particular,
issues
such
as
void
formation,
poor
adhesion,
defects
compromise
both
efficiency
durability
of
PSCs.
To
address
these
challenges,
a
formamidinium‐based
situ
coordination
(F‐ISS)
strategy
is
proposed
to
optimize
normal‐structure
By
incorporating
various
materials
(FAI,
FABr,
FACl),
F‐ISS
approach
effectively
reduces
defects,
mitigates
nanoparticle
aggregation,
enhances
electrical
morphological
uniformity
electron
transport
layer
(ETL),
improves
level
alignment.
The
F‐ISS‐incorporation
ETL
exhibits
improved
surface
smoothness,
reduced
trap
density,
stronger
leading
superior
quality
interface.
These
enhancements
result
performance,
with
achieving
an
25.61%,
surpassing
control
23.43%.
Additionally,
PCE
mini‐module
active
area
18.55
cm
2
achieved
21.72%,
19.76%.
Moreover,
significantly
boosts
stability,
retaining
over
80%
initial
after
1000
h
continuous
illumination
maximum
power
point
testing.
findings
establish
promising
solution
for
addressing
inherent
photovoltaics.
Язык: Английский
Effect of Guanidinium Salt for Stress‐Relaxation and Interfacial Engineering in Antisolvent Free Perovskite Solar Cells Fabricated Under Air Ambient
Small,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 13, 2024
Abstract
In
perovskite
solar
cells,
the
presence
of
stress
and
defects
at
interfaces
promotes
performance
degradation
poor
stability
devices.
The
formation
these
is
more
prominent
in
two‐step
antisolvent‐free
film
fabrication.
This
study
addresses
challenges
by
introducing
guanidine
sulfate
(Gua‐S)
tin
oxide/formamidinium
lead
iodide
interface,
fabricated
without
antisolvent
under
ambient
air.
Interfacial
Gua‐S
enhanced
morphology
forming
bonds
between
uncoordinated
Pb
2+
ions
I
−
vacancies
interface
showed
improvement
crystallinity
quality
film.
Microstructural
analysis
indicated
a
substantial
reduction
stress,
decreasing
from
50.6
to
20.72
MPa
with
application
Gua‐S.
Moreover,
treated
cells
significant
improvements
achieved
an
open
circuit
voltage
1.08
V
22.34%
efficiency.
Further,
electrochemical
impedance
spectroscopic
improved
built‐in
potential,
carrier
lifetime,
charge
recombination
lifetime
for
devices
retained
over
87%
initial
power
conversion
efficiency
after
2000
hours
operation.
comprehensive
fundamental
issues
interfacial
demonstrates
efficacy
salt
enhancing
both
structural
functional
aspects
device
fabrication
process.
Язык: Английский