Nano Convergence,
Journal Year:
2024,
Volume and Issue:
11(1)
Published: Nov. 30, 2024
Abstract
Lead
halide
perovskites
have
emerged
as
a
new
class
of
semiconductor
materials
with
exceptional
optoelectronic
properties,
sparking
significant
research
interest
in
photovoltaics
and
light-emitting
diodes.
However,
achieving
long-term
operational
stability
remains
critical
hurdle.
The
soft,
ionic
nature
the
perovskite
lattice
renders
them
vulnerable
to
various
instabilities.
These
instabilities
can
be
triggered
by
factors
such
photoexcitation,
electrical
bias,
surrounding
electrolyte/solvent
or
atmosphere
under
operating
conditions.
Spectroelectrochemistry
offers
powerful
approach
bridge
gap
between
electrochemistry
photochemistry
(or
spectroscopy),
providing
comprehensive
understanding
band
structure
excited-state
dynamics
perovskites.
This
review
summarizes
recent
advances
that
highlight
fundamental
principles,
electronic
materials,
photoelectrochemical
phenomena
observed
upon
photo-
electro-chemical
charge
injections.
Further,
we
discuss
instability,
encompassing
oxidation,
vacancy
formation,
ion
migration,
degradation,
sequential
expulsion
bias.
Spectroelectrochemical
studies
provide
deeper
interfacial
processes
mobility
pave
way
for
design
more
robust
perovskites,
accelerating
future
development
efforts.
Graphical
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(46)
Published: June 25, 2024
Abstract
Photoelectrochemical
cells
(PEC)
use
solar
energy
to
generate
green
hydrogen
by
water
splitting
and
have
an
integrated
device
structure.
Achieving
high
solar‐to‐hydrogen
conversion
(STH)
efficiency
along
with
a
long
operational
lifetime
in
these
is
crucial
for
the
production
of
low‐cost
as
viable
source.
Several
functional
components,
such
photo
absorber,
charge
transport,
catalyst
layers
are
interfaced
form
compact
monolithic
device.
In
this
review,
therefore,
engineering
design
individual
components
cells,
interplay
between
them,
their
interfaces
discussed
detail,
factors
determine
overall
performance
cells.
The
main
emphasis
on
halide
perovskite
(HP)
absorbers,
which
emerged
promising
materials
due
superior
optoelectronic
properties.
Recent
advances
development
efficient
stable
perovskite‐based
highlighted
reviewed.
catalysts
effect
pH
supporting
cations
also
examined.
Finally,
scientific
challenges
future
directions
designing
photoelectrochemical
discussed.
This
review
can
help
researchers
further
advance
technology
toward
commercial
hydrogen.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 21, 2025
Abstract
Metal
halide
perovskite
(MHP)‐based
photocatalysts
encounter
significant
stability
challenges
in
water‐containing
systems,
posing
a
major
obstacle
to
their
application
artificial
photosynthesis.
Herein,
an
innovative
and
universal
strategy
is
present
create
MHP‐based
ternary
heterojunctions
based
on
self‐templating
method.
A
series
of
composite
catalysts
featuring
sandwich
hollow
structures
are
constructed,
with
MHPs
such
as
CsPbBr
3
,
Cs
Bi
2
I
9
Sb
Br
AgBiBr
6
serving
the
intermediate
layers.
The
unique
structure
effectively
shields
from
direct
water
contact,
allowing
exhibit
exceptional
photocatalytic
environments
for
durations
exceeding
200
h.
Furthermore,
design
ensures
complete
contact
between
reaction
substrates
both
oxidation
reduction
functional
areas.
Compared
single
materials,
heterojunction
stronger
capability
improved
charge
separation
efficiency,
leading
substantial
enhancement
CO
performance.
Notably,
layer
achieves
electron
consumption
rate
up
1824
µmol
g
−1
h
reduction,
which
far
superior
other
reported
under
similar
conditions.
This
study
provides
potent
simultaneously
enhancing
activity
photocatalysts,
paving
way
potential
applications
Exploration,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 6, 2025
ABSTRACT
Perovskite
solar
cells
(PSCs)
have
attracted
considerable
attention
due
to
their
potential
for
high‐efficiency
conversion
and
cost‐effective
fabrication.
Although
the
fabrication
of
perovskite
films
in
ambient
air
offers
environmental
cost
advantages,
presence
water
vapor
oxygen
may
induce
instability
these
films,
thereby
affecting
device
performance.
This
review
aims
comprehensively
explore
recent
advancements
PSCs
air,
while
investigating
various
factors
contributing
degradation.
Addressing
challenges,
diverse
strategies
are
outlined,
encompassing
compositional,
additive,
solvent,
interface
engineering
enhance
performance
stability
fabricated
under
air.
To
facilitate
commercialization
PSCs,
this
paper
summarizes
several
widely
employed
methods
large‐scale
manufacturing
PSCs.
Through
review,
we
aim
offer
some
invaluable
insights
guidance
trajectory
as
well
pros
cons
widespread
applications
field
renewable
energy.
Materials Horizons,
Journal Year:
2024,
Volume and Issue:
11(22), P. 5499 - 5532
Published: Jan. 1, 2024
High-performance
perovskite
materials
with
excellent
physical,
electronic,
and
optical
properties
play
a
significant
role
in
artificial
neuromorphic
devices.
However,
the
development
of
perovskites
microelectronics
is
inevitably
hindered
by
their
intrinsic
non-ideal
properties,
such
as
high
defect
density,
environmental
sensitivity,
toxicity.
By
leveraging
engineering,
integrating
various
to
leverage
mutual
strengths
presents
great
potential
enhance
ion
migration,
energy
level
alignment,
photoresponsivity,
surface
passivation,
thereby
advancing
optoelectronic
device
development.
This
review
initially
provides
an
overview
across
different
dimensions,
highlighting
physical
detailing
applications
metrics
two-
three-terminal
Subsequently,
we
comprehensively
summarize
application
combination
other
materials,
including
organics,
nanomaterials,
oxides,
ferroelectrics,
crystalline
porous
(CPMs),
develop
advanced
devices
memristors,
transistors,
photodetectors,
sensors,
light-emitting
diodes
(LEDs),
systems.
Lastly,
outline
challenges
future
research
directions
synthesizing
composites
for
Through
analysis,
aim
broaden
utilization
research,
offering
new
insights
approaches
grasping
intricate
working
mechanisms
functionalities
perovskites.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(28), P. 36471 - 36478
Published: July 2, 2024
In
the
development
of
back
electrodes
for
perovskite
solar
cells
(PSCs),
major
challenges
are
stability
and
cost.
To
address
this,
we
present
an
innovative
approach:
Simultaneous
evaporation
two
independently
controlled
sources
metal
materials
was
performed
to
achieve
a
uniform
distribution
alloy
electrodes.
this
study,
Ag–Cu
alloys
(the
molar
ratio
Ag/Cu
is
7/3)
with
high-index
crystal
face
(111)
work
function
matching
were
prepared
using
codeposition
technique.
These
properties
mitigate
nonradiative
carrier
recombination
at
interface
reduce
energy
barrier
migration.
Consequently,
compared
Ag
based
PSCs
(22.77%),
implementation
(Ag/Cu
7/3)-based
resulted
in
power
conversion
efficiency
23.72%.
1500
h
tracking
test
ambient
air,
maintained
their
initial
86%.
This
can
be
attributed
almost
no
migration
elements
from
electrode
layer.
Our
presents
vital
strategy
improving
reducing
costs
associated
PSCs.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 12, 2024
Abstract
Perovskite
solar
cells
(PSCs)
have
made
significant
strides
in
efficiency,
but
their
long‐term
stability
remains
a
challenge.
While
external
encapsulation
mitigates
extrinsic
degradation
and
lead
leakage,
it
does
not
fully
address
performance
decline
due
to
ion
migration
within
the
perovskite
devices.
Therefore,
an
internal
layer
that
can
selectively
transport
charge
carriers
suppress
across
interface
is
of
great
significance
for
achieving
these
Here,
polytetrafluoroethylene
(PTFE)
serve
as
effective
between
film
electron
inverted
PSCs
demonstrated.
The
PTFE
electrons
diffusion,
resulting
higher
power
conversion
efficiency
(PCE)
25.49%
compared
24.74%
control
devices
much
better
stability.
Even
after
1500
h
air
exposure,
encapsulated
maintain
92.6%
original
PCE,
outperforming
at
80.4%.
This
approach
offers
novel
solution
addressing
migration‐induced
instability
An
ionic
liquid
(B4PBF₄)
was
synthesized
and
characterized
using
spectroscopic
techniques,
incorporating
it
in
different
proportions
(0.25,
0.5,
1.5%
w/w)
into
thin
perovskite
films.
The
results
show
that
1.5
%
concentration
significantly
improves
the
optical
properties
by
minimizing
trap
states
preventing
charge
recombination.
XPS
analysis
indicates
a
strong
interaction
between
lead
halides
at
this
proportion.
Additionally,
photovoltaic
devices
fabricated
with
percentage
achieved
higher
efficiency.
In
terms
of
stability,
also
prevented
water
absorption
on
surface,
delaying
film
degradation
up
to
500
h.
Ge-based
perovskite
solar
cells
(Ge-PSCs)
have
recently
garnered
significant
interest
due
to
their
low
toxicity
and
high
abundance.
Herein,
we
present
an
in-depth
analysis
of
FTO/TiO2/absorber
layer/Spiro-OMeTAD/Au
cell
structure
using
the
SCAPS-1D
software.
Four
types
Ge
perovskites,
namely,
RbGeI3,
CsGeI3,
CH3NH3GeI3,
CH5N2GeI3,
were
considered
as
absorber
layers.
The
primary
aim
this
research
is
compare
photovoltaic
performance
inorganic
organic
Ge-PSCs.
physical
characteristics
layers
such
thickness,
defect
density,
shallow
donor
acceptor
densities,
density
interfaces,
series
shunt
resistances,
operating
temperature
device
optimized
improve
performance.
generation
recombination
profiles
analyzed
investigate
losses
in
Current
densities
quantum
efficiencies
measured
for
various
hole
transport
(Spiro,
P3HT,
CuI,
CuSCN,
PEDOT:
PSS)
identify
most
effective
HTL.
Capacitance-voltage,
Mott-Schottky,
capacitance-frequency
analyses
conducted
determine
layer,
built-in
potential,
capacitance.
findings
indicated
that
Ge-PSCs
performed
better
than
counterparts
lower
band
gap
favorable
optoelectronic
properties.
Here,
RbGeI3
PSCs
achieved
highest
power
conversion
efficiency
(PCE)
26.83%
followed
by
CsGeI3~19.30%,
MAGeI3~12.35%,
FAGeI3~5.69%.
