Halide
perovskite
solar
cells
have
achieved
impressive
efficiencies
above
26%,
making
them
a
promising
technology
for
the
future
of
energy.
However,
current
fabrication
methods
rely
on
highly
toxic
solvents,
which
pose
significant
safety
and
environmental
hazards.
It
is
crucial
to
develop
greener
safer
alternatives
these
solvents
facilitate
commercialization
cells.
In
this
review,
hazard
evaluations
conventional
discuss
selection
criteria
that
affect
morphology,
nucleation,
crystallization,
performance
Furthermore,
recent
research
into
green
solvent
evaluated
their
properties
are
compared
those
commonly
used
solvents.
fundamental
insights
provided
progress
challenges
green‐solution
processing
cells,
will
be
essential
advancing
toward
commercialization.
The Journal of Physical Chemistry Letters,
Год журнала:
2025,
Номер
unknown, С. 1597 - 1603
Опубликована: Фев. 5, 2025
The
fabrication
of
perovskite
solar
cells
(PSCs)
in
ambient
air
can
accelerate
their
industrialization.
However,
moisture
causes
severe
decomposition
the
materials,
limiting
device
efficiency.
Here,
we
demonstrate
that,
compared
to
traditional
N,N-dimethylformamide-based
precursor
solutions,
ionic
liquid
methylammonium
acetate
(MAAc)
system
forms
a
protective
layer
on
surface
due
C═O···Pb
and
N-H···I
interactions
between
MAAc
PbI64-,
which
effectively
prevents
direct
contact
components
water.
Moreover,
show
that
certain
level
humidity
weakens
promoting
crystallization
process
resulting
films
with
fewer
defects.
PSCs
based
achieved
power
conversion
efficiency
20.73%
under
optimal
water
content
conditions,
unencapsulated
devices
maintained
>83%
initial
after
>1300
h
air.
Crystals,
Год журнала:
2025,
Номер
15(2), С. 176 - 176
Опубликована: Фев. 13, 2025
The
use
of
organic
halide
salts
to
passivate
metal
perovskite
(MHP)
surface
defects
has
been
studied
extensively.
Passivating
the
MHP
is
critical
importance
for
realizing
highly
efficient
and
stable
solar
cells
(PSCs).
Here,
successful
application
a
multifunctional
salt,
methyltriphenylphosphonium
iodide
(MTPPI),
used
as
passivation
additive
grain
boundary
molecular
sealing
layer
in
terms
stabilization,
stabilize
mixed
cation
RbCsMAFA-PbIBr.
To
assess
passivating
stabilizing
effects
MTPPI
on
RbCsMAFA-PbIBr
PSCs,
maximum
power
point
tracking
(MPPT)
was
applied
most
realistic
closest-to-application
condition
ageing
test.
were
aged
under
light
source
yielding
an
excitation
intensity
corresponding
one
sun
with
tracking,
which
interrupted
periodically
by
current–voltage
sweeps.
This
allowed
extraction
all
photovoltaic
parameters
necessary
proper
understanding
process.
can
donate
iodine
anions
vacancies
compensate
negative
excess
charge
interactions.
On
top
this,
large
bulky
(MTPP+)
may
block
both
escape
volatile
components
ingress
oxygen
water
vapour.
These
collective
roles
have
improved
efficiency
stability
compared
reference
without
additives.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 20, 2025
Abstract
Despite
the
great
potential
of
lead‐halide
perovskite
photodetectors
for
broadband
photodetection,
ion
migration
in
perovskites
and
parasitic
charge
injection
from
adjacent
layers
remain
major
challenges,
ultimately
leading
to
device
failure.
Here,
novel
use
an
ultra‐thin
layer
ferrocenyl‐bis‐phenyl‐2‐carboxylate
(FcPhc
2
)
is
demonstrated
as
a
hole‐blocking
layer.
It
shown
that
FcPhc
creates
energetic
barrier
between
electron
transport
layer,
significantly
reducing
hole
Ag
contact.
This
improvement
results
ultralow
noise
spectral
density
1.2
×
10
−14
A
Hz
−1/2
,
high
specific
detectivity
8.1
12
Jones
at
−0.5
V
740
nm.
In
addition,
effectively
inhibits
I
−
oxidation
induced
by
injected
holes
reduces
formed
on
surface,
enhancing
reverse
bias
stability.
The
increase
stability
does
not
compromise
response
speed
‐based
devices
operate
scale
150
ns
1.3
MHz
photo‐
electrical‐responses.
