The Journal of Physical Chemistry C,
Год журнала:
2024,
Номер
128(14), С. 6080 - 6088
Опубликована: Март 27, 2024
Wide-band-gap
(WBG)
perovskite
solar
cells
have
gained
significant
attention
in
silicon/perovskite
tandem
due
to
their
suitable
band
gap
and
high
open
circuit
voltage
(Voc).
However,
the
phase
separation
film
defects
of
WBG
films
severely
hindered
larger
Voc
efficiency.
Herein,
we
demonstrate
a
simple
passivation
approach
with
potassium
thiocyanate
methylammonium
chloride
dual-passivation,
which
could
effectively
increase
grain
size
suppress
ion
migration
separation.
Consequently,
wide-band-gap
(1.69
eV)
dual-passivation
exhibit
relatively
power
conversion
efficiency
(PCE)
20.35%
1.20
V.
Meanwhile,
mini-module
an
area
12
cm2
obtains
impressive
PCE
17.4%.
The
optimized
state-of-the-art
favorable
storage
stability.
Chemical Reviews,
Год журнала:
2024,
Номер
124(7), С. 4079 - 4123
Опубликована: Март 25, 2024
All-perovskite
tandem
solar
cells
are
attracting
considerable
interest
in
photovoltaics
research,
owing
to
their
potential
surpass
the
theoretical
efficiency
limit
of
single-junction
cells,
a
cost-effective
sustainable
manner.
Thanks
bandgap-bowing
effect,
mixed
tin-lead
(Sn-Pb)
perovskites
possess
close
ideal
narrow
bandgap
for
constructing
matched
with
wide-bandgap
neat
lead-based
counterparts.
The
performance
all-perovskite
tandems,
however,
has
yet
reach
its
potential.
One
main
obstacles
that
need
be
overcome
is
the─oftentimes─low
quality
Sn-Pb
perovskite
films,
largely
caused
by
facile
oxidation
Sn(II)
Sn(IV),
as
well
difficult-to-control
film
crystallization
dynamics.
Additional
detrimental
imperfections
introduced
thin
film,
particularly
at
vulnerable
surfaces,
including
top
and
bottom
interfaces
grain
boundaries.
Due
these
issues,
resultant
device
distinctly
far
lower
than
theoretically
achievable
maximum
efficiency.
Robust
modifications
improvements
surfaces
films
therefore
critical
advancement
field.
This
Review
describes
origins
covers
efforts
made
so
toward
reaching
better
understanding
perovskites,
particular
respect
surface
improved
stability
cells.
In
addition,
we
also
outline
important
issues
integrating
subcells
achieving
reliable
efficient
double-
multi-junction
tandems.
Future
work
should
focus
on
characterization
visualization
specific
defects,
tracking
evolution
under
different
external
stimuli,
guiding
turn
processing
stable
cell
devices.
All-perovskite
tandem
solar
cells
(TSCs)
have
exhibited
higher
efficiencies
than
single-junction
perovskite
(PSCs)
but
still
suffer
from
the
unsatisfactory
performance
of
low-bandgap
(LBG)
tin-lead
(Sn-Pb)
subcells.
The
inherent
properties
PEDOT:PSS
are
crucial
to
high-performance
Sn-Pb
films
and
devices;
however,
underlying
mechanism
has
not
been
fully
explored
revealed.
Here,
we
report
a
facile
oxalic
acid
treatment
(OA-PEDOT:PSS)
precisely
regulate
its
work
function
surface
morphology.
OA-PEDOT:PSS
shows
larger
an
ordered
reorientation
fiber-shaped
film
morphology
with
efficient
hole
transport
pathways,
leading
formation
more
ideal
hole-selective
contact
for
suppressing
interfacial
nonradiative
recombination
losses.
Moreover,
induces
(100)
preferred
orientation
growth
higher-quality
films.
Last,
OA-PEDOT:PSS–tailored
LBG
PSC
yields
impressive
efficiency
up
22.56%
(certified
21.88%),
enabling
27.81%
all-perovskite
TSC
enhanced
operational
stability.
Advanced Materials,
Год журнала:
2024,
Номер
36(21)
Опубликована: Фев. 24, 2024
Light-induced
phase
segregation
is
one
of
the
main
issues
restricting
efficiency
and
stability
wide-bandgap
perovskite
solar
cells
(WBG
PSCs).
Small
organic
molecules
with
abundant
functional
groups
can
passivate
various
defects,
therefore
suppress
ionic
migration
channels
for
segregation.
Herein,
a
series
pyridine-derivative
isomers
containing
amino
carboxyl
are
applied
to
modify
surface.
The
amino,
carboxyl,
N-terminal
pyridine
in
all
these
interact
undercoordinated
Pb
Advanced Materials,
Год журнала:
2024,
Номер
36(24)
Опубликована: Март 13, 2024
Abstract
Modifying
perovskite
surface
using
various
organic
ammonium
halide
cations
has
proven
to
be
an
effective
approach
for
enhancing
the
overall
performance
of
solar
cells.
Nevertheless,
impact
structural
symmetry
these
on
interface
termination
remained
uncertain.
Here,
this
work
investigates
influence
devices,
molecules
based
symmetrical
bis(2‐chloroethyl)ammonium
cation
(B(CE)A
+
)
and
asymmetrical
2‐chloroethylammonium
(CEA
as
layers
between
hole
transport
layer.
These
results
reveal
that
B(CE)A
lead
a
more
homogeneous
potential
comprehensive
chelation
with
uncoordinated
Pb
2+
compared
cations,
resulting
in
favorable
energy
band
alignment
strengthened
defect
healing.
This
strategy,
leveraging
spatial
geometrical
promotes
carrier
extraction
functional
reduces
nonradiative
recombination
surface.
Consequently,
cells
processed
achieve
power
conversion
efficiency
(PCE)
25.60%
retain
≈91%
their
initial
PCE
after
500
h
maximum
point
operation.
highlights
significant
benefits
utilizing
structurally
promoting
stability
Materials Futures,
Год журнала:
2024,
Номер
3(2), С. 022102 - 022102
Опубликована: Апрель 24, 2024
Abstract
Perovskite
(PVK)
solar
cells
(PSCs)
have
garnered
considerable
research
interest
owing
to
their
cost-effectiveness
and
high
efficiency.
A
systematic
annual
review
of
the
on
PSCs
is
essential
for
gaining
a
comprehensive
understanding
current
trends.
Herein,
analysis
papers
reporting
key
findings
in
2023
was
conducted.
Based
results,
were
categorized
into
six
classifications,
including
regular
n–i–p
PSCs,
inverted
p–i–n
PVK-based
tandem
cells,
PVK
modules,
device
stability,
lead
toxicity
green
solvents.
Subsequently,
detailed
overview
summary
advancements
within
each
classification
presented.
Overall,
this
serves
as
valuable
resource
guiding
future
endeavors
field
PSCs.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Май 25, 2024
Abstract
Wide‐bandgap
(WBG)
perovskite
solar
cells
(PSCs)
are
recognized
as
promising
candidates
for
diversified
photovoltaics
(PVs),
such
tandem
devices,
indoor
PVs,
and
semitransparent
building‐integrated
PVs.
However,
these
WBG
perovskites
made
from
a
mixed‐halides
strategy
suffer
severe
phase
segregation
under
continuous
illumination,
leading
to
exacerbated
non‐radiative
recombination,
consequently
decreased
open‐circuit
voltage
efficiency.
In
this
review,
the
generation
reversal
processes
of
in
meticulously
introduced.
Additionally,
major
characterization
techniques
presented.
A
detailed
summary
recent
progress
enhancing
photostability
PSCs
through
various
strategies
is
provided.
These
primarily
concentrate
on
composition
regulation,
crystallization
modulation,
inhibition
ion
migration,
strain
regulation.
Finally,
perspectives
potential
directions
carefully
discussed
promote
further
development
high‐efficiency
photostable
PSCs.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 7, 2025
Wide-bandgap
perovskite
solar
cells
(WBG
PSCs)
have
promising
applications
in
tandem
devices
yet
suffer
from
low
open-circuit
voltages
(VOCs)
and
less
stability.
To
address
these
issues,
the
study
introduces
multifunctional
nicotinamide
derivatives
into
WBG
PSCs,
leveraging
regulation
on
photovoltaically
preferential
orientation
optoelectronic
properties
via
diverse
functional
groups,
e.g.,
carbonyl,
amino.
Isonicotinamide
(IA)
molecule
emerges
as
most
effective
agent,
enhancing
crystallization
kinetics
defect
passivation
due
to
its
unique
planar
spatial
configuration.
Incorporating
IA
perovskites
improves
(100)
preferred
crystal
orientation,
reduces
trap
density,
enables
well-matched
energy
band
alignment.
High-performance
1.77
eV
PSCs
are
achieved
with
a
champion
power
conversion
efficiency
of
19.34%
VOC
1.342
V,
leading
fabrication
best-performing
all-perovskite
cell
PCE
28.53%
(certified
28.27%)
excellent
operational
stability,
maintaining
over
90%
initial
under
1
sun
illumination
for
600
h.
