Abstract
Over
the
last
decade,
perovskite
solar
cells
(PSCs)
have
drawn
extensive
attention
owing
to
their
high
power
conversion
efficiency
(single
junction:
26.1%,
perovskite/silicon
tandem:
33.9%)
and
low
fabrication
cost.
However,
short
lifespan
of
PSCs
with
initial
still
blocks
practical
applications.
This
operational
instability
may
originate
from
intrinsic
extrinsic
degradation
materials
or
devices.
Although
lifetime
has
been
prolonged
through
component,
crystal,
defect,
interface,
encapsulation
engineering,
so
on,
systematic
analysis
failure
regularity
for
perspective
devices
against
multiple
operating
stressors
is
indispensable.
In
this
review,
we
start
elaboration
predominant
pathways
mechanism
under
working
stressors.
Then
strategies
improving
long‐term
durability
respect
fundamental
materials,
interface
designs,
device
summarized.
Meanwhile,
key
results
discussed
understand
limitation
assessing
stability,
potential
applications
in
indoor
photovoltaics
wearable
electronics
are
demonstrated.
Finally,
promising
proposals,
encompassing
material
processing,
film
formation,
strengthening,
structure
designing,
encapsulation,
provided
improve
stability
promote
commercialization.
image
Abstract
Flexible
perovskite
solar
cells
(f‐PSCs)
as
a
promising
power
source
have
grabbed
surging
attention
from
academia
and
industry
specialists
by
integrating
with
different
wearable
portable
electronics.
With
the
development
of
low‐temperature
solution
preparation
technology
application
engineering
strategies,
conversion
efficiency
f‐PSCs
has
approached
24%.
Due
to
inherent
properties
scenarios
f‐PSCs,
study
strain
in
these
devices
is
recognized
one
key
factors
obtaining
ideal
promoting
commercialization.
The
strains
mainly
change
bond
lattice
volume
can
promote
phase
transformation,
induce
decomposition
film,
decrease
mechanical
stability,
etc.
However,
effect
on
performance
not
been
systematically
summarized
yet.
Herein,
sources
strain,
evaluation
methods,
impacts
strategies
modulate
are
summarized.
Furthermore,
problems
future
challenges
this
regard
raised,
solutions
outlooks
offered.
This
review
dedicated
summarizing
enhancing
research
into
provide
some
new
insights
that
further
improve
optoelectronic
stability
flexible
devices.
The
power
conversion
efficiency
(PCE)
of
organic–inorganic
halide
perovskite
solar
cells
(PSCs)
has
increased
rapidly
in
recent
years,
with
the
certified
best
single‐junction
photovoltaics
reaching
an
astounding
PCE
26%.
Formamidine
(FA)‐based
perovskites
possess
excellent
photovoltaic
properties
and
superior
thermal
stability,
establishing
them
as
one
most
promising
materials
for
light
absorption.
However,
issue
phase
instability
black‐phase
formamidinium
lead
iodide
(
α
‐FAPbI
3
)
seriously
impeded
its
commercialization
process,
strain
found
films
being
regarded
a
significant
factor
impacting
stability
PSCs.
This
article
begins
by
examining
sources
characterization
techniques
related
to
perovskites.
Subsequently,
it
outlines
effects
on
FA‐based
presents
strategies
modify
lattice
strain.
Finally,
potential
engineering
future
is
discussed.
review
aims
clarify
impact
perovskite,
determine
methods
enhance
device
performance,
ultimately
facilitate
these
materials.
DeCarbon,
Год журнала:
2023,
Номер
3, С. 100025 - 100025
Опубликована: Окт. 13, 2023
P-i-n
type
perovskite
solar
cells
(PSCs)
manifest
some
promising
advantages
in
terms
of
remarkable
operational
stability,
low-temperature
processability,
and
compatibility
for
multi-junction
devices,
whereas
relatively
low
efficiency
compared
to
n-i-p
PSCs
because
mismatched
energy
level
alignment
poor
interface
quality
at
both
n-
p-type
contacts.
Recently,
great
progress
has
been
achieved
the
p-i-n
PSCs,
efficiencies
exceeding
25%
have
reported
from
different
research
groups.
Herein,
state-of-the-art
strategies
deployment
high-performance
systematically
reviewed
including
engineering
top-surface
buried
films
with
eliminated
non-radiative
charge
recombination,
modulating
conduction
types
perovskites
well
aligned
facilitate
transport,
designing
effective
hole
transport
materials
lossless
extraction,
so
on,
based
on
which
perspectives
further
design
efficient,
stable
scalable
are
provided
aspects
design,
device
fabrication,
scalability
functionalization.
Advanced Energy and Sustainability Research,
Год журнала:
2024,
Номер
5(8)
Опубликована: Апрель 26, 2024
Perovskite
solar
cells
(PSCs)
have
gained
tremendous
research
interest
recently
owing
to
several
advantages,
including
low
material
cost,
facile
solution
processability,
bandgap
tunability,
and
alluring
device
efficiency.
The
organic
formamidinium
(FA)
cation‐based
perovskites
are
mainly
considered
as
one
of
the
potential
candidates
for
charge
carrier
generation
due
their
excellent
properties,
such
thermal
stability
than
traditional
perovskites.
However,
inevitable
unfavorable
polymorphism
(i.e.,
α
δ
)
at
room
temperature
still
forms
basis
numerous
works
allow
fabrication
a
high‐quality
absorber
enhances
PSCs
performance.
studies
resolve
contemporary
techniques
(e.g.,
passivation
strategy)
with
recent
novel
methods
presented
in
this
review
form
essence
improvements
PSCs.
morphology
also
influences
charge‐transfer
behavior
device's
lifetime.
Therefore,
understanding
these
properties
is
essential
improve
quality
avoid
many
defects.
This
focuses
on
structure
pure
mixed
FA
various
halides,
cation's
role
composition.
And
comprehensive
overview
double,
triple,
quadrupole
results
proper
scientific
explanations
understand
physics.
Angewandte Chemie,
Год журнала:
2024,
Номер
136(16)
Опубликована: Фев. 19, 2024
Abstract
Formamidinium
lead
iodide
(FAPbI
3
)
represents
an
optimal
absorber
material
in
perovskite
solar
cells
(PSCs),
while
the
application
of
FAPbI
inverted‐structured
PSCs
has
yet
to
be
successful,
mainly
owing
its
inferior
film‐forming
on
hydrophobic
or
defective
hole‐transporting
substrates.
Herein,
we
report
a
substantial
improvement
‐based
inverted
PSCs,
which
is
realized
by
multifunctional
amphiphilic
molecular
hole‐transporter,
(2‐(4‐(10
H
‐phenothiazin‐10‐yl)phenyl)‐1‐cyanovinyl)phosphonic
acid
(PTZ−CPA).
The
phenothiazine
(PTZ)
based
PTZ−CPA,
carrying
cyanovinyl
phosphonic
(CPA)
group,
forms
superwetting
hole‐selective
underlayer
that
enables
facile
deposition
high‐quality
thin
films.
Compared
previously
established
carbazole‐based
(2‐(3,6‐dimethoxy‐9
‐carbazol‐9‐yl)ethyl)phosphonic
(MeO−2PACz),
crystallinity
enhanced
and
electronic
defects
are
passivated
PTZ−CPA
more
effectively,
resulting
remarkable
increases
photoluminescence
quantum
yield
(four‐fold)
Shockley‐Read‐Hall
lifetime
(eight‐fold).
Moreover,
shows
larger
dipole
moment
improved
energy
level
alignment
with
,
benefiting
interfacial
hole‐collection.
Consequently,
achieve
unprecedented
efficiency
25.35
%
under
simulated
air
mass
1.5
(AM1.5)
sunlight.
device
commendable
long‐term
stability,
maintaining
over
90
initial
after
continuous
operation
at
40
°C
for
2000
hours.
Advanced Materials,
Год журнала:
2024,
Номер
36(49)
Опубликована: Сен. 23, 2024
Abstract
Perovskite/organic
tandem
solar
cells
(POTSCs)
have
garnered
significant
attention
due
to
their
potential
for
achieving
high
photovoltaic
(PV)
performance.
However,
the
reported
power
conversion
efficiencies
(PCEs)
and
fill
factors
(FFs)
are
still
subpar
challenges
associated
with
charge
extraction
in
organic
bulk‐heterojunction
(BHJ)
energy
losses
interconnecting
layers
(ICLs).
Here,
a
quaternary
BHJ
blend
is
developed
enhance
subcell,
contributing
an
increased
FF
of
≥78%
under
1
sun
illumination
even
more
lower
intensities.
Meanwhile,
ICLs
reduced
via
incorporation
self‐assembly
monolayer
(SAM),
(4‐(3,6‐Dimethyl‐9H‐carbazol‐9‐yl)butyl)phosphonic
acid
(Me‐4PACz),
form
MoO
x
/SAM
interface
thorough
control
thickness
suppress
parasitic
absorption.
The
resultant
POTSCs
achieve
remarkable
PCE
25.56%
(certified:
24.65%),
record
83.62%,
which
among
highest
PCEs
all
types
perovskite‐based
(TSCs)
till
now.
This
work
proves
optimization
effective
strategies
promote
performance
surpass
other
solution‐processed
TSCs
near
future.
