Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 3, 2024
Abstract
The
two‐step
sequential
deposition
method
is
considered
a
potential
way
for
the
large‐scale
manufacture
of
perovskite
solar
cells
(PSCs)
with
high
power
conversion
efficiency
and
reproducibility.
However,
dense
lead
iodide
(PbI
2
)
film
interferes
its
full
contact
organic
solutions,
resulting
in
an
inadequate
reaction
at
interface.
Herein,
kinds
metal‐organic
framework
(MOF)
are
introduced,
amorphous
Ni‐MOF‐74
(
am
Ni‐MOF‐74)
crystalline
Zn‐MOF‐74
cr
Zn‐MOF‐74),
into
PbI
regulating
crystallization.
Compared
to
Zn‐MOF‐74,
incorporation
exhibited
rapid
nucleation,
high‐quality
films
large
grain
size,
low
trap
density,
enhanced
charge
transfer
between
layers.
Meanwhile,
content
unstable
phase
left
due
insufficient
also
reduced.
modified
PSCs
champion
24.17%
good
humidity
thermal
stability.
unencapsulated
device
maintains
90%
initial
after
1000
h
storage
dark
ambient
conditions
≈30%
relative
humidity.
This
strategy
provides
effective
approach
promoting
crystallization
process
fabricating
efficient
stable
PSCs.
Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 26, 2025
Abstract
Tin
perovskite
solar
cells
(PSCs)
have
garnered
considerable
attention
as
promising
alternatives
to
lead
PSCs
due
their
lower
toxicity
and
outstanding
optoelectronic
properties.
However,
efficiency
stability,
particularly
in
2D/3D
tin
PSCs,
are
usually
hindered
by
high
defect
densities
inefficient
carrier
transport.
In
this
study,
a
small‐molecule
Lewis
base
with
multiple
functional
groups‐cyanoacetohydrazide
(CAH)
is
employed
mitigate
defects
enhance
charge
transport
PSCs.
It
revealed
that
the
carbonyl,
amine,
cyano
groups
CAH
form
strong
chemical
bonds
Sn
2+
ions,
resulting
synergetic
coordination
effects.
Moreover,
interaction
between
effectively
regulates
crystallization
process
of
film,
high‐quality
film
enhanced
crystallinity,
reduced
density,
modulated
phase
distribution.
As
result,
optimized
achieve
remarkable
power
conversion
15.06%,
marking
one
highest
values
for
Furthermore,
devices
exhibit
retaining
95%
initial
performance
after
2000
h
storage
nitrogen
atmosphere.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 13, 2025
Abstract
Currently,
there
are
17
billion
IoT
nodes,
mostly
powered
by
cables
or
batteries,
leading
to
high
maintenance
costs
and
increased
risk
of
data
loss
during
power
outages.
Although
a
self‐sustaining
node
holds
potential
tackle
this
issue,
it
faces
the
challenges
obtaining
stable,
uninterrupted
energy
sources
maintaining
adequate
efficiency.
This
study
introduces
fully
irradiated,
24‐h
flexible
(SSN)
that
is
highly
integrated
with
sensors,
storage,
wireless
transmission,
supply
units,
specifically
perovskite
solar
cell
module
(FPSM).
The
FPSM
enables
stable
across
diverse
indoor
outdoor
irradiance
conditions,
while
SSN
employs
smart
management
system
optimize
utilization
distribution.
Additionally,
transmission
achieved
low‐power
consumption
Zigbee
module,
enabling
dependable
environmental
monitoring
extensive
3D
collection
“indoor‐outdoor‐aerial”
environments.
Finally,
integration
feedback
control
systems
allows
FPSM‐SSN
serve
as
home
hub,
seamlessly
combining
sensing
actuation
functionalities
enhance
efficiency
functionality.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(48)
Опубликована: Авг. 5, 2024
Abstract
Mixed
tin‐lead
perovskite
solar
cells
can
reach
band
gaps
as
low
1.2
eV,
offering
high
theoretical
efficiency
and
serving
base
materials
for
all‐perovskite
tandem
cells.
However,
instability
defect
densities
at
the
interfaces,
particularly
buried
surface,
have
limited
performance
improvements.
In
this
work,
we
present
modification
of
bottom
interface
with
multifunctional
hydroxylamine
salts.
These
salts
effectively
coordinate
different
components,
having
critical
influences
in
regulating
crystallization
process
passivating
defects
varying
nature.
The
surface
reduced
traps
prevented
formation
excessive
lead
iodide,
enhancing
quality
films.
modified
devices
presented
fill
factors
reaching
81
%
efficiencies
up
to
23.8
%.
unencapsulated
maintained
over
95
their
initial
after
2000
h
shelf
storage.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 23, 2024
Abstract
Various
popular
large
organic
cations
have
been
extensively
used
as
the
essential
additives
in
perovskite
precursor
solution
due
to
their
satisfactory
passivation
effect
but
may
produce
low‐n
value
(n
≤
2)
2D
phases
with
undesired
distribution.
Meanwhile,
remaining
easy
oxidation
of
Sn
2+
and
p‐type
self‐doping
perovskites
are
also
detrimental
ultimate
photovoltaic
properties
stability
tin
(Sn)‐based
solar
cells
(PSCs).
Here,
3AMPYSnI
4
crystals
(3AMPY
=
3‐(aminomethyl)pyridinium))
designed
applied
adjust
crystallization
process
phase
distribution
Sn‐based
perovskite.
Consequently,
strong
coordination
interaction
between
3AMPY
3D
components
introduced
nucleation
sites
by
not
only
decreases
increases
phase,
inhibits
self‐p‐doping
perovskites,
resulting
lower
trap
density
non‐radiative
recombination
loss,
faster
carrier
extraction
transfer,
higher
for
2D‐3D
PSCs.
As
a
result,
optimized
devices
deliver
an
increased
power
conversion
efficiency
from
initial
10.91%
13.28%
retain
96.0%
original
performance
more
than
3000
h
nitrogen
(N
2
)
atmosphere.
Angewandte Chemie International Edition,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 5, 2025
Perovskite
solar
cells
(PSCs)
based
on
single
crystals
hold
potential
for
higher
efficiency
and
stability,
while
the
incomplete
interface
contact
hinders
hole
carrier
extraction
device
performance.
Herein,
we
report
strengthening
crystal/substrate
by
nucleation
engineering
in
situ
growth
strategy.
Through
modulating
transport
layer
(HTL)
to
induce
process
at
substrate
surface,
residual
solution,
voids,
small-sized
are
eliminated,
thus
ensuring
intimate
physically.
Combining
with
strong
interaction
between
perovskites
HTL,
balanced
electron/hole
suppressed
nonradiative
recombination
achieved.
As
a
result,
an
impressive
power
conversion
(PCE)
of
25.8
%
is
obtained,
setting
new
benchmark
single-crystal
PSCs.
Moreover,
thermal-induced
peeling-off
from
substrates
mitigated,
which
improves
thermal
stability
distinctly.
Angewandte Chemie,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 5, 2025
Abstract
Perovskite
solar
cells
(PSCs)
based
on
single
crystals
hold
potential
for
higher
efficiency
and
stability,
while
the
incomplete
interface
contact
hinders
hole
carrier
extraction
device
performance.
Herein,
we
report
strengthening
crystal/substrate
by
nucleation
engineering
in
situ
growth
strategy.
Through
modulating
transport
layer
(HTL)
to
induce
process
at
substrate
surface,
residual
solution,
voids,
small‐sized
are
eliminated,
thus
ensuring
intimate
physically.
Combining
with
strong
interaction
between
perovskites
HTL,
balanced
electron/hole
suppressed
nonradiative
recombination
achieved.
As
a
result,
an
impressive
power
conversion
(PCE)
of
25.8
%
is
obtained,
setting
new
benchmark
single‐crystal
PSCs.
Moreover,
thermal‐induced
peeling‐off
from
substrates
mitigated,
which
improves
thermal
stability
distinctly.
