Cell Reports Physical Science,
Journal Year:
2024,
Volume and Issue:
5(6), P. 101996 - 101996
Published: May 22, 2024
Due
to
the
unique
characteristics
of
solution
preparation
and
rapid
crystal
growth,
perovskite
solar
cells
may
exhibit
various
kinds
defects
that
ultimately
impact
their
photovoltaic
performance
stability.
Here,
a
multifunctional
additive,
potassium
trifluoromethanesulfonate
(KTFS),
is
introduced
into
lead
iodide
precursor
solution.
anions,
positive
work
function
shift
(more
p
type)
observed,
which
benefits
extraction
holes.
The
cation
can
occupy
lattice
gaps
effectively
inhibit
ion
migration,
formation
energy
iodine
vacancy
are
increased
according
calculation
results.
As
result,
KTFS-modified
cell
devices
show
champion
efficiency
up
23.96%
as
well
over
1,000-h
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(14)
Published: Feb. 10, 2024
Abstract
The
main
obstacles
to
promoting
the
commercialization
of
perovskite
solar
cells
(PSCs)
include
their
record
power
conversion
efficiency
(PCE),
which
still
remains
below
Shockley–Queisser
limit,
and
poor
long‐term
stability,
attributable
crystallographic
defects
in
films
open‐circuit
voltage
(
V
oc
)
loss
devices.
In
this
study,
potassium
(4‐tert‐butoxycarbonylpiperazin‐1‐yl)
methyl
trifluoroborate
(PTFBK)
was
employed
as
a
multifunctional
additive
target
modulate
bulk
carrier
dynamics
PSCs.
Apart
from
simultaneously
passivating
anionic
cationic
defects,
PTFBK
could
also
optimize
energy‐level
alignment
devices
weaken
interaction
between
carriers
longitudinal
optical
phonons,
resulting
lifetime
greater
than
3
μs.
Furthermore,
it
inhibited
non‐radiative
recombination
improved
crystallization
capacity
film.
Hence,
rigid
flexible
p‐i‐n
PSCs
yielded
champion
PCEs
24.99
%
23.48
%,
respectively.
More
importantly,
due
hydrogen
bonding
formamidinium
fluorine,
exhibited
remarkable
thermal,
humidity,
operational
tracking
at
maximum
point
stabilities.
reduced
Young's
modulus
residual
stress
layer
provided
excellent
bending
stability
for
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(2), P. 2408 - 2416
Published: Jan. 3, 2024
Despite
the
fact
that
perovskite
solar
cells
(PSCs)
are
widely
popular
due
to
their
superb
power
conversion
efficiency
(PCE),
further
applications
still
restricted
by
low
stability
and
high-density
defects.
Especially,
weak
binding
ion–electron
properties
of
crystals
make
them
susceptible
moisture
attack
under
environmental
stress.
Herein,
we
report
an
overall
sulfidation
strategy
via
introduction
1-pentanethiol
(PT)
into
film
inhibit
bulk
defects
stabilize
Pb
ions.
It
has
been
confirmed
thiol
groups
in
PT
can
uncoordinated
ions
passivate
iodine
vacancy
forming
strong
Pb–S
bonds,
thus
reducing
nonradiative
recombination.
Moreover,
favorable
passivation
process
also
optimizes
energy-level
arrangement,
induces
better
crystallization,
enhances
charge
extraction
full
cells.
Consequently,
PT-modified
inverted
device
delivers
a
champion
PCE
22.46%,
which
is
superior
control
(20.21%).
More
importantly,
retains
91.5%
its
initial
after
storage
air
for
1600
h
over
85%
heating
at
85
°C
800
h.
This
work
provides
new
perspective
simultaneously
improve
performance
PSCs
satisfy
commercial
applications.
Energy & Environmental Science,
Journal Year:
2023,
Volume and Issue:
16(10), P. 4251 - 4279
Published: Jan. 1, 2023
This
paper
reviews
the
performance
modulation
of
perovskite
solar
cells
by
cross-linking
polymerization
with
different
molecular
structures
from
points
grain
boundaries,
lattice
interior,
and
charge
transport
layers.
Advanced Energy Materials,
Journal Year:
2023,
Volume and Issue:
14(4)
Published: Nov. 30, 2023
Abstract
Wide‐bandgap
(WBG)
perovskite
solar
cells
(PSCs)
have
drawn
great
attention
owing
to
their
promising
potential
for
constructing
efficient
tandem
cells.
However,
the
rapid
crystallization
results
in
poor
film
properties
and
easy
formation
of
defects,
thereby
greatly
restricting
acquisition
a
small
open‐circuit
voltage
(
V
OC
)
deficit
due
severe
nonradiative
recombination.
Herein,
it
introduced
triethanolamine
borate
(TB)
effectively
slow
down
preparing
highly
crystalline
uniform
WBG
films
with
reduced
defects.
The
strong
intermolecular
interaction
(e.g.,
coordination
hydrogen
bond)
between
TB
can
suppress
halide
vacancy
inhibit
phase
segregation
improving
long‐term
stability.
devices
based
on
1.65
eV
absorber
achieved
high
efficiency
21.55%
1.24
V,
demonstrating
is
as
low
0.41
which
one
lowest
reports.
By
combining
semitransparent
subcell
narrow‐bandgap
tin‐based
PSC,
four‐terminal
cell
delivers
26.48%.
ACS Energy Letters,
Journal Year:
2024,
Volume and Issue:
9(3), P. 1115 - 1124
Published: Feb. 22, 2024
Perovskite
solar
cells
(PSCs)
are
attractive
due
to
their
fast-increasing
device
efficiency,
yet
further
improvement
is
limited
by
suboptimal
morphology
and
intrinsic
defects.
To
assess
how
the
widely
used
additive
engineering
impacts
crystal
growth
defect
passivation,
we
herein
propose
a
simple
but
effective
strategy
disentangle
influence
of
molecular
coordinating
strength
on
above
factors,
respectively.
By
fine-tuning
single
halide
atom
molecule,
can
transform
functional
role
from
only
normal
passivator
into
plus
crystal-growth
modifier,
rendered
tailored
competition
between
precursor–solvent
precursor–additive
interactions.
Thus,
optimized
PSCs
leveraged
deliver
PCE
over
24%
with
improved
stability.
The
unified
passivation
under
impact
here
provides
new
insights
designing
molecules
interest
push
envelope
PSCs'
efficiency.
Journal of Materials Chemistry A,
Journal Year:
2024,
Volume and Issue:
12(10), P. 5980 - 5989
Published: Jan. 1, 2024
F/N-GQDs
were
used
to
synergistically
passivate
defects
of
perovskite
layers,
suppressing
nonradiative
recombination,
optimizing
energy
level
alignment,
and
improving
hole
extraction
ability,
greatly
enhancing
the
photoelectric
performance
C-PSCs.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(44)
Published: Aug. 6, 2024
Abstract
This
work
proposes
a
methodology
to
increase
the
open‐circuit
voltage
of
perovskite
solar
cells
via
modulating
buried
interface
using
π‐conjugated
molecules,
featuring
push‐pull
electronic
structure
configuration.
In
planar
tin
oxide
nanocrystal
as
an
electron
transport
layer,
2‐methyl‐1‐aminobenzene
derivatives
with
4‐(Heptafluoropropan)‐2‐methylaniline
notable
not
only
reduce
interfacial
energy
barrier
but
also
passivate
defects
at
interface.
modulation
enhances
open
circuit
Cs
0.05
(FA
0.85
MA
0.15
)
0.95
Pb(I
Br
3
(bandgap
≈1.60
eV)
cell
high
value
1.241
V
and
thus
power
conversion
efficiency
24.16%
under
standard
testing
condition.
An
even
higher
25.11%
can
be
achieved
when
employing
in
FA
0.9
PbI
≈1.54
cell.
The
(1.241
V)
is
among
highest
triple‐cation
which
reaches
95%
Shockley–Queisser
limit.
A
solar‐to‐CO
11.76%
fabricated
minimodule
driven
carbon
dioxide
electrolyzer.
demonstrates
potential
utilizing
for
CO
2
clean
green
environment.
