Science,
Год журнала:
2024,
Номер
384(6697), С. 767 - 775
Опубликована: Май 16, 2024
The
efficiency
and
longevity
of
metal-halide
perovskite
solar
cells
are
typically
dictated
by
nonradiative
defect-mediated
charge
recombination.
In
this
work,
we
demonstrate
a
vapor-based
amino-silane
passivation
that
reduces
photovoltage
deficits
to
around
100
millivolts
(>90%
the
thermodynamic
limit)
in
bandgaps
between
1.6
1.8
electron
volts,
which
is
crucial
for
tandem
applications.
A
primary-,
secondary-,
or
tertiary-amino-silane
alone
negatively
barely
affected
crystallinity
transport,
but
amino-silanes
incorporate
primary
secondary
amines
yield
up
60-fold
increase
photoluminescence
quantum
preserve
long-range
conduction.
Amino-silane-treated
devices
retained
95%
power
conversion
more
than
1500
hours
under
full-spectrum
sunlight
at
85°C
open-circuit
conditions
ambient
air
with
relative
humidity
50
60%.
Advanced Materials,
Год журнала:
2023,
Номер
36(17)
Опубликована: Сен. 7, 2023
Wide-bandgap
(WBG)
perovskites
have
attracted
considerable
attention
due
to
their
adjustable
bandgap
properties,
making
them
ideal
candidates
for
top
subcells
in
tandem
solar
cells
(TSCs).
However,
WBG
often
face
challenges
such
as
inhomogeneous
crystallization
and
severe
nonradiative
recombination
loss,
leading
high
open-circuit
voltage
(V
Science,
Год журнала:
2024,
Номер
384(6700), С. 1126 - 1134
Опубликована: Июнь 6, 2024
The
light-emitting
diodes
(LEDs)
used
in
indoor
testing
of
perovskite
solar
cells
do
not
expose
them
to
the
levels
ultraviolet
(UV)
radiation
that
they
would
receive
actual
outdoor
use.
We
report
degradation
mechanisms
p-i-n-structured
under
unfiltered
sunlight
and
with
LEDs.
Weak
chemical
bonding
between
perovskites
polymer
hole-transporting
materials
(HTMs)
transparent
conducting
oxides
(TCOs)
dominate
accelerated
A-site
cation
migration,
rather
than
direct
HTMs.
An
aromatic
phosphonic
acid,
[2-(9-ethyl-9H-carbazol-3-yl)ethyl]phosphonic
acid
(EtCz3EPA),
enhanced
at
perovskite/HTM/TCO
region
a
group
bonded
TCOs
nitrogen
interacting
lead
perovskites.
A
hybrid
HTM
EtCz3EPA
strong
hole-extraction
polymers
retained
high
efficiency
improved
UV
stability
devices,
champion
minimodule-independently
measured
by
Perovskite
PV
Accelerator
for
Commercializing
Technologies
(PACT)
center-retained
operational
>16%
after
29
weeks
testing.
Advanced Materials,
Год журнала:
2023,
Номер
35(33)
Опубликована: Май 11, 2023
The
preparation
of
high-quality
perovskite
films
is
key
to
realize
efficient
and
stable
inverted
solar
cells.
trap-assisted
nonradiative
recombination
at
grain
boundary
(GB)
surface
poses
a
serious
challenge
for
fabricating
films.
Here,
synergistic
modulation
strategy
two-dimensional
(2D)
with
alternating
cations
in
the
interlayer
space
(ACI)
multisite
ligand
2-mercapto-1,3,4-thiadiazole
(MTD)
methylammonium-free
reported.
formation
ACI
2D
promotes
nucleation
three-dimensional
(3D)
perovskites,
suppresses
generation
yellow
phase,
black
leading
increased
size
crystallinity.
Due
effect
MTD,
defects
GBs
are
healed
simultaneously.
significantly
inhibited
enables
realization
high-efficiency
devices
fascinating
power
conversion
efficiency
(PCE)
24.58%,
which
one
highest
PCEs
reported
devices.
synergistically
modified
unsealed
device
demonstrates
an
excellent
long-term
ambient
stability,
retaining
90.5%
its
initial
PCE
after
3000
h
under
relative
humidity
30-40%.
This
work
provides
deep
insights
into
minimizing
losses
through
rational
engineering
GB
toward
Advanced Materials,
Год журнала:
2023,
Номер
36(12)
Опубликована: Апрель 19, 2023
Abstract
With
the
rapid
rise
in
device
performance
of
perovskite
solar
cells
(PSCs),
overcoming
instabilities
under
outdoor
operating
conditions
has
become
most
crucial
obstacle
toward
their
commercialization.
Among
stressors
such
as
light,
heat,
voltage
bias,
and
moisture,
latter
is
arguably
critical,
it
can
decompose
metal‐halide
(MHP)
photoactive
absorbers
instantly
through
its
hygroscopic
components
(organic
cations
metal
halides).
In
addition,
charge
transport
layers
(CTLs)
commonly
employed
PSCs
also
degrade
presence
water.
Furthermore,
photovoltaic
module
fabrication
encompasses
several
steps,
laser
processing,
subcell
interconnection,
encapsulation,
during
which
are
exposed
to
ambient
atmosphere.
Therefore,
a
first
step
long‐term
stable
photovoltaics,
vital
engineer
materials
maximizing
moisture
resilience,
be
accomplished
by
passivating
bulk
MHP
film,
introducing
passivation
interlayers
at
top
contact,
exploiting
hydrophobic
CTLs,
encapsulating
finished
devices
with
barrier
layers,
without
jeopardizing
performance.
Here,
existing
strategies
for
enhancing
stability
reviewed
pathways
moisture‐resilient
commercial
formulated.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(31)
Опубликована: Июнь 8, 2023
High-performance
perovskite
solar
cells
have
demonstrated
commercial
viability,
but
still
face
the
risk
of
contamination
from
lead
leakage
and
long-term
stability
problems
caused
by
defects.
Here,
an
organic
small
molecule
(octafluoro-1,6-hexanediol
diacrylate)
is
introduced
into
film
to
form
a
polymer
through
in
situ
thermal
crosslinking,
which
carbonyl
group
anchors
uncoordinated
Pb2+
reduces
lead,
along
with
-CF2
-
hydrophobic
protecting
water
invasion.
Additionally,
passivates
varieties
Pb-related
I-related
defects
coordination
hydrogen
bonding
interactions,
regulating
crystallization
reduced
trap
density,
releasing
lattice
strain,
promoting
carrier
transport
extraction.
The
optimal
efficiencies
polymer-incorporated
devices
are
24.76
%
(0.09
cm2
)
20.66
(14
).
More
importantly,
storage
stability,
operational
been
significantly
improved.
Advanced Materials,
Год журнала:
2024,
Номер
36(37)
Опубликована: Март 1, 2024
Abstract
Perovskite
solar
cells
(PSCs)
have
attracted
widespread
research
and
commercialization
attention
because
of
their
high
power
conversion
efficiency
(PCE)
low
fabrication
cost.
The
long‐term
stability
PSCs
should
satisfy
industrial
requirements
for
photovoltaic
devices.
Inverted
with
a
p‐i‐n
architecture
exhibit
considerable
advantages
excellent
competitive
efficiency.
continuously
broken‐through
PCE
inverted
shows
huge
application
potential.
This
review
summarizes
the
developments
outlines
characteristics
including
charge
transport
layers
(CTLs),
perovskite
compositions,
interfacial
regulation
strategies.
latest
effective
CTLs,
modification,
promotion
strategies
especially
under
light,
thermal,
bias
conditions
are
emphatically
analyzed.
Furthermore,
applications
structure
in
high‐efficiency
stable
tandem,
flexible
devices,
modules
main
obstacles
systematically
introduced.
Finally,
remaining
challenges
faced
by
devices
discussed,
several
directions
advancing
proposed
according
to
development
status
industrialization
requirements.
