Materials,
Journal Year:
2023,
Volume and Issue:
17(1), P. 129 - 129
Published: Dec. 26, 2023
The
high
power-conversion
efficiencies
of
hybrid
perovskite
solar
cells
encourage
many
researchers.
However,
their
limited
photostability
represents
a
serious
obstacle
to
the
commercialization
this
promising
technology.
Herein,
we
present
an
efficient
method
for
improving
intrinsic
series
commonly
used
material
formulations
such
as
MAPbI3,
FAPbI3,
Cs0.12FA0.88PbI3,
and
Cs0.10MA0.15FA0.75PbI3
through
modification
with
octenidine
dihydroiodide
(OctI2),
which
is
widely
antibacterial
drug
two
substituted
pyridyl
groups
cationic
centers
in
its
molecular
framework.
most
impressive
stabilizing
effects
were
observed
case
FAPbI3
Cs0.12FA0.88PbI3
absorbers
that
manifested
significant
suppression
or
even
blocking
undesirable
films’
recrystallization
other
decomposition
pathways
upon
continuous
110
mW/cm2
light
exposure.
achieved
photostability—within
9000
h
Oct(FA)n−1PbnI3n+1
(n
=
40–400)
20,000
Oct(Cs0.12FA0.88)n−1PbnI3n+1
(where
n
formulations—matches
highest
values
ever
reported
complex
lead
halides.
It
important
note
effect
maintained
when
OctI2
only
surface-modifying
agent.
Using
two-cation
composition
example,
showed
performances
based
on
developed
Oct(Cs0.12FA0.88)399Pb400I1201
absorber
are
comparable
reference
devices
unmodified
composition.
These
findings
indicate
great
potential
proposed
approach
design
new
highly
photostable
absorbers.
We
believe
results
study
will
also
help
establish
guidelines
rational
improve
operational
stability
cells.
Chemistry of Materials,
Journal Year:
2024,
Volume and Issue:
36(2), P. 675 - 681
Published: Jan. 10, 2024
We
fabricated
a
2D/3D
perovskite
film
by
adding
molecular
spacer,
S-benzyl-l-cysteine
(SBLC),
during
MAPbI3
formation
and
investigated
the
effect
of
SBLC
on
electronic
conduction
with
field-effect
transistor.
The
addition
resulted
in
larger
grain
size
top
surface
activated
modulated
gate
electric
field.
modulation
is
attributed
to
presence
2D
layer
induced
spacer
3D
bulk,
resulting
from
passivation
interfacial
localized
states
suppression
ion
migration
within
film.
Illumination
green
light
hole
transport,
ambipolar
transport
SBLC-induced
film,
explaining
that
treatment
reduced
trap
density
states.
maximized
field
effect-induced
charge
enabling
configuration
due
ionic
behavior
surface.
This
study
highlights
structural
effects
organic
electrical
properties
bulk
layer,
hinting
defect-induced
instability
can
be
overcome
interface.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 11, 2024
Abstract
Metal
halide
perovskites
(MHPs)
are
a
perfect
example
of
state‐of‐the‐art
photovoltaic
materials
whose
compositional
and
structural
diversity,
coupled
with
utilization
low‐temperature
processing,
can
undesirably
result
in
spatially
inhomogeneous
properties
that
locally
vary
within
the
material.
This
complexity
MHPs
requires
sensitive
imaging
characterization
methods
at
microscopic
level
to
gauge
impact
such
inhomogeneities
on
device
performance
formulate
mitigation
strategies.
review
consolidates
susceptible
local
variations
highlights
appropriate
techniques
be
employed
map
them.
Inhomogeneities
morphology,
emission,
electrical
response,
chemical
composition
MHP
thin
films
specifically
considered,
possible
for
their
visualization
reviewed.
For
each
type
microscopy,
short
discussion
about
spatial
resolution,
sample
requirements,
advantages,
limitations
is
provided,
thus
leaving
reader
guide
available
tools
evaluate
MHPs.
Emergent Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 15, 2024
Abstract
Perovskites
are
of
high
potential
in
the
ongoing
academic
research,
due
to
their
distinctive
electrical
properties
and
crystalline
structures.
Halide
perovskites
show
light
emissive
panchromatic
absorption
across
visible
spectrum.
The
exceptional
characteristics,
such
as
long
carrier
lifespan,
diffusion
length,
charge
mobility,
allow
electric
charges
be
transported
collected
effectively.
Furthermore,
by
tuning
cations
anions
composition,
perovskite’s
opto-electrical
can
altered.
Moreover,
dimension
reduction
affects
band
gap
intrinsic
features
induce
higher
structural
stability
but
at
cost
quantum
confinement
effect.
Owing
properties,
halide
being
researched
energy-related
semiconducting
applications,
hold
promise
future
looks
bright.
But
challenges
remain,
larger
question
is
what
needs
done
make
them
more
stable.
Materials,
Journal Year:
2023,
Volume and Issue:
17(1), P. 129 - 129
Published: Dec. 26, 2023
The
high
power-conversion
efficiencies
of
hybrid
perovskite
solar
cells
encourage
many
researchers.
However,
their
limited
photostability
represents
a
serious
obstacle
to
the
commercialization
this
promising
technology.
Herein,
we
present
an
efficient
method
for
improving
intrinsic
series
commonly
used
material
formulations
such
as
MAPbI3,
FAPbI3,
Cs0.12FA0.88PbI3,
and
Cs0.10MA0.15FA0.75PbI3
through
modification
with
octenidine
dihydroiodide
(OctI2),
which
is
widely
antibacterial
drug
two
substituted
pyridyl
groups
cationic
centers
in
its
molecular
framework.
most
impressive
stabilizing
effects
were
observed
case
FAPbI3
Cs0.12FA0.88PbI3
absorbers
that
manifested
significant
suppression
or
even
blocking
undesirable
films’
recrystallization
other
decomposition
pathways
upon
continuous
110
mW/cm2
light
exposure.
achieved
photostability—within
9000
h
Oct(FA)n−1PbnI3n+1
(n
=
40–400)
20,000
Oct(Cs0.12FA0.88)n−1PbnI3n+1
(where
n
formulations—matches
highest
values
ever
reported
complex
lead
halides.
It
important
note
effect
maintained
when
OctI2
only
surface-modifying
agent.
Using
two-cation
composition
example,
showed
performances
based
on
developed
Oct(Cs0.12FA0.88)399Pb400I1201
absorber
are
comparable
reference
devices
unmodified
composition.
These
findings
indicate
great
potential
proposed
approach
design
new
highly
photostable
absorbers.
We
believe
results
study
will
also
help
establish
guidelines
rational
improve
operational
stability
cells.
