Environmentally
friendly
antisolvents
are
key
to
achieving
efficient,
reproducible,
and
sustainable
perovskite
solar
cells
(PSCs).
Here,
a
comparison
was
made
between
the
traditional
highly
toxic
chlorobenzene
(CB)
antisolvent
green
ethyl
acetate
(EA)
dimethyl
carbonate
(DMC).
The
employment
of
DMC
shown
result
in
formation
films
with
enhanced
grain
size
superior
crystal
quality.
This
leads
an
optimal
energy
level
alignment
electron
transport
layer,
effectively
mitigating
nonradiative
recombination
caused
by
film
imperfections,
reducing
loss
organic
components
during
annealing
process,
suppressing
lead
iodide
phase.
Finally,
champion
device,
based
on
DMC,
exhibited
high
power
conversion
efficiency
(PCE)
25.18%,
which
is
one
PCEs
reported
for
this
device
structure.
Moreover,
maintains
92%
its
original
PCE
after
approximately
1000
h
under
environmental
conditions.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 3, 2025
Abstract
Halide
perovskites
hold
great
potential
in
developing
next‐generation
X‐ray
detectors.
However,
preparing
high‐quality
and
thick
perovskite
films
a
way
compatible
with
thin‐film
transistor
(TFT)‐integrated
flat‐panel
detectors
(XFPDs)
remains
challenging.
Here,
by
engineering
ink
effective
printability
shape
fidelity,
direct
writing
(DIW)
is
developed
as
new
approach
to
printing
unique
single‐crystal‐assembled
(SCAP)
film.
In
contrast
polycrystalline
grains
consisting
of
randomly
orientated
crystal
domains,
the
SCAP
made
tightly
packed
crystals
well‐defined
facets,
showing
3–4
orders
magnitude
lower
trap
density
(4.48
×
10
12
cm
−3
).
Consequently,
offers
state‐of‐the‐art
detection
performance
(sensitivity‐to‐dark
current
ratio:
1.26
11
µC
Gy
air
−1
A
),
low
limit
(114.2
nGy
s
negligible
baseline
drift
(0.27
fA
V
Furthermore,
XFPD
based
on
64
pixelated
TFT
array
realizes
high‐resolution
digital
radiography,
opening
avenue
for
further
development
Crystal Research and Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 8, 2025
Abstract
The
formamidinium
lead
iodide
(FAPbI
3
)
perovskite
has
emerged
as
a
promising
material
for
high‐efficiency
photovoltaic
applications.
Although
power
conversion
efficiency
of
more
than
26%
been
achieved,
stability
issues
have
hindered
its
commercial
application.
In
this
study,
the
FAPbI
under
adverse
conditions
such
humidity,
oxygen,
ultraviolet
light,
and
temperature
fluctuations
is
systematically
reviewed.
known
effective
strategies
improving
are
discussed.
Current
studies
shown
that
technologies
doping,
halide
alloying,
additive
manufacturing
engineering,
interface
modification
identified
in
mitigating
phase
transitions
enhancing
environmental
durability.
Encapsulation
technology
further
improves
moisture
heat
resistance.
Compared
with
other
stabilization
strategies,
doping
alloying
can
address
effects
narrowing
absorption
edge.
Interface
engineering
an
essential
understanding
mechanism,
which
will
greatly
improve
problem
practical
application
.
This
paper
also
looks
forward
to
future
research
directions
development
trends.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 7, 2025
Abstract
engineering
has
emerged
as
a
promising
approach
to
improve
the
stability
and
power
conversion
efficiency
of
perovskite
solar
cells
(PSCs)
by
regulating
crystallization
or
defects.
Conventional
methods
typically
focus
on
single
functional
group,
leading
deficiency
in
simultaneously
addressing
above
mentioned
two
aspects.
Here,
an
innovative
using
(methylsulfonyl)phenyl)prop‐2‐en‐1‐amine
hydroiodide
(MSPPAI)
is
presented
concurrently
effectively
modulate
defect
passivation.
The
unique
structure
MSPPAI,
combining
rigid
conjugated
with
multisite
anchoring
groups
(─NH
2
─SO
─),
enables
precise
regulation
through
strong
interaction
components.
This
promotes
preferred
(100)
orientation
crystals,
enhances
grain
size,
thus
improves
film
quality.
Meanwhile,
approximate
coplanarity
further
facilitate
ordered
directional
growth.
Furthermore,
preventing
volatile
loss
coordinating
residual
Pb
2+
,
MSPPAI
could
stabilize
boundaries
surfaces
reduce
defects
prevent
degradation.
Utilizing
these
mechanisms,
corresponding
based
devices
achieves
25.54%
exhibits
excellent
that
maintains
93%
its
initial
even
after
1600
h
under
humid
conditions.
molecular
design
strategy
presents
novel
for
improving
PSCs.
The Journal of Physical Chemistry Letters,
Год журнала:
2025,
Номер
unknown, С. 738 - 746
Опубликована: Янв. 12, 2025
The
photoelectric
conversion
efficiency
(PCE)
of
perovskites
remains
beneath
the
Shockley-Queisser
limit,
despite
its
significant
potential
for
solar
cell
applications.
present
focus
is
on
investigating
multicomponent
perovskite
candidates,
particularly
application
machine
learning
to
expedite
band
gap
screening.
To
efficiently
identify
high-performance
perovskites,
we
utilized
a
data
set
1346
hybrid
organic–inorganic
and
employed
11
models,
including
decision
trees,
convolutional
neural
networks
(CNNs),
graph
(GNNs).
Four
descriptors
were
high-throughput
screening:
sine
matrix,
Ewald
sum
atom-centered
symmetry
functions
(ACSF),
many-body
tensor
representation
(MBTR).
results
indicated
that
LightGBM
CatBoost
somewhat
surpassed
XGBoost
in
tree
but
random
forests
lagged.
Among
CNN
models
utilizing
same
four
descriptors,
CustomCNN
VGG16
Xception,
while
EfficientNetV2B0
exhibited
least
favorable
performance.
When
matrix
served
as
adjacency
matrices
GNN
GCSConv
considerable
improvement
over
GATConv
slight
advantage
GCNConv.
Significantly,
outperformed
other
when
with
matrix.
ideal
combination
algorithms
identified
was
MBTR
+
CustomCNN,
an
R2
0.94.
Subsequently,
three
exhibiting
appropriate
Heyd–Scuseria–Ernzerhof
(HSE06)
gaps
define
defects.
them,
CH3C(NH2)2SnI3
superior
performance
both
vacancy
substitutional
defects
compared
C3H8NSnI3
(CH3)2NH2SnI3.
This
screening
method
establishes
robust
foundation
selecting
materials
exceptional
properties.
Journal of Semiconductors,
Год журнала:
2025,
Номер
46(1), С. 011601 - 011601
Опубликована: Янв. 1, 2025
Abstract
Flexible
photodetectors
have
garnered
significant
attention
by
virtue
of
their
potential
applications
in
environmental
monitoring,
wearable
healthcare,
imaging
sensing,
and
portable
optical
communications.
Perovskites
stand
out
as
particularly
promising
materials
for
photodetectors,
offering
exceptional
optoelectronic
properties,
tunable
band
gaps,
low-temperature
solution
processing,
notable
mechanical
flexibility.
In
this
review,
we
explore
the
latest
progress
flexible
perovskite
emphasizing
strategies
developed
photoactive
device
structures
to
enhance
performance
stability.
Additionally,
discuss
typical
these
devices
offer
insights
into
future
directions
applications.
Narrow
bandgap
mixed
tin-lead
perovskite
solar
cells
(PSCs)
have
garnered
substantial
research
interest
owing
to
their
remarkable
optoelectronic
properties.
However,
non-radiative
recombination
and
carrier
transport
losses
at
the
interface
between
layer
charge
(C60)
significantly
reduce
overall
efficiency
of
PSCs.
To
address
this
challenge,
9-Fluorenylmethyl
carbazate
(9FC)
is
incorporated
C60.
The
hydrazide
group
present
in
9FC
effectively
mitigates
oxidation
Sn2+.
Furthermore,
can
engage
chemical
bonding
with
perovskite,
while
outward-facing
aromatic
rings
create
effective
π-π
interactions
C60,
thereby
promoting
enhanced
interfacial
transfer.
highest-performing
PSCs
achieve
a
power
conversion
(PCE)
23.97%,
accompanied
by
an
impressive
open-circuit
voltage
0.91
V.
Additionally,
these
facilitate
development
highly
efficient
two-terminal
four-terminal
all-perovskite
tandem
cells,
which
demonstrate
efficiencies
27.01%
28.07%,
respectively.
