Significance of Formamidinium Incorporation in Perovskite Composition and Its Impact on Solar Cell Efficiency: A Mini‐Review
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.
Язык: Английский
Room Temperature Crystallized Phase‐Pure α‐FAPbI3 Perovskite with In‐Situ Grain‐Boundary Passivation
Advanced Science,
Год журнала:
2024,
Номер
11(22)
Опубликована: Март 19, 2024
Abstract
Energy
loss
in
perovskite
grain
boundaries
(GBs)
is
a
primary
limitation
toward
high‐efficiency
solar
cells
(PSCs).
Two
critical
strategies
to
address
this
issue
are
high‐quality
crystallization
and
passivation
of
GBs.
However,
the
established
methods
generally
carried
out
discretely
due
complicated
mechanisms
growth
defect
formation.
In
study,
combined
method
proposed
by
introducing
3,4,5‐Trifluoroaniline
iodide
(TFAI)
into
precursor.
The
TFAI
triggers
union
nano‐sized
colloids
microclusters
facilitates
complete
phase
transition
α‐FAPbI
3
at
room
temperature.
controlled
chemical
reactivity
strong
steric
hindrance
effect
enable
fixed
location
suppress
defects
This
combination
well‐crystallized
grains
effectively
passivated
GBs
leads
an
improvement
open
circuit
voltage
(
V
oc
)
PSCs
from
1.08
1.17
V,
which
one
highest
recorded
without
interface
modification.
TFAI‐incorporated
device
achieved
champion
PCE
24.81%.
maintained
steady
power
output
near
its
maximum
point,
showing
almost
no
decay
over
280
h
testing
pre‐processing.
Язык: Английский
Tailoring the permittivity of passivated dyes to achieve stable and efficient perovskite solar cells with modulated defects
Materials Today Advances,
Год журнала:
2024,
Номер
22, С. 100501 - 100501
Опубликована: Май 21, 2024
Additive
engineering
has
been
demonstrated
to
effectively
mitigate
carrier
losses
associated
with
high
surface
defects
of
perovskite
at
grain
boundaries,
bulk,
and
interfaces.
Nevertheless,
there
are
persistent
challenges
in
enhancing
the
passivation
effects
interfaces
without
compromising
extraction
efficiency.
In
this
work,
a
feasible
strategy
incorporating
multiple
functional
groups
developed
simultaneously
passivate
boundaries/interfaces,
enhance
charge
transport
by
tuning
permittivity
(εr).
Two
novel
D-π-A
type
molecules,
(Z)-3-((4'-(bis(4-methoxyphenyl)amino)-[1,1′-biphenyl]-4-yl)methylene)-5-
fluoroindolin-2-one
(TBI)
(Z)-2-(5-((4'-(bis(4-methoxyphenyl)amino)-[1,1′-biphenyl]-4-yl)
methylene)-4-oxo-2-thioxothiazolidin-3-yl)acetic
acid
(TBR)
were
synthesized.
Due
introduction
rhodanine
acceptor,
εr
dye
molecules
is
significantly
increased
(εr
TBR
2.5,
TBI
1.9),
making
closer
that
spiro-OMeTAD
2.9),
which
helps
reduce
dielectric
mismatch
between
top
HTL.
Moreover,
strong
coordination
interactions
Pb2+/FA+
SnO2-layer
thioxothiazolidin-3-acetic
boundaries
The
PSC
fabricated
based
on
shows
improved
VOC,
JSC,
FF,
resulting
peak
PCE
23.74
%,
along
remarkable
stability
maintaining
above
86
%
initial
performance
after
1440
h
aging
air
60
relative
humidity.
This
work
sets
stage
for
further
improving
solar
cells.
Язык: Английский
Highly Oriented FAPbI3 via 2D Ruddlesden Popper Perovskite Template Growth
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(31)
Опубликована: Май 21, 2024
Abstract
2D
perovskites
are
demonstrated
as
the
growth
template
for
modulation
of
phase
transition
and
crystallization
formamidinium
lead
triiodide
(FAPbI
3
).
However,
it
is
challenging
to
obtain
highly
oriented
α‐FAPbI
regulate
at
bottom
FAPbI
film.
Here,
a
(BA)
2
PbI
4
layer
with
preferred
orientation
introduced
perform
quasi‐epitaxial
,
which
triggers
perovskite
formation.
Owing
assembly
[PbI
6
]
4−
octahedral
on
template,
(100)
from
top
attained.
At
optimum
concentration,
gradually
vanish
due
extrusion
BA
+
cation
guarantees
charge
transport
bottom.
Consequently,
strategy
effectively
promotes
film
quality
suppresses
non‐radiative
recombination.
The
efficiency
solar
cells
(PSCs)
promoted
23.06%
24.78%.
Язык: Английский
Interface passivation strategies for high-performance perovskite solar cells using two-dimensional perovskites
Materials Chemistry Frontiers,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 1, 2024
A
review
of
recent
advancements
in
interface
passivation
strategies,
with
a
particular
focus
on
the
implementation
2D/3D
perovskite
across
buried
interfaces,
grain
boundaries,
and
top
interfaces.
Язык: Английский
Why Perovskite Thermal Stress is Unaffected by Thin Contact Layers
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(33)
Опубликована: Июнь 5, 2024
Abstract
Metal
halide
perovskite
photovoltaics
have
emerged
as
a
high
efficiency,
low‐cost
alternative
that
can
potentially
rival
or
enhance
conventional
silicon
technology.
Despite
exceptional
initial
power
conversion
efficiencies,
achieving
compliance
with
international
standards
and
widespread
adoption
requires
further
enhancements
to
their
operational
stability.
Notably,
addressing
mechanical
strain
stress
in
brittle
perovskites
has
pivotal
approach
mitigate
chemical
degradation
improve
reliability
during
thermal
cycling.
In
this
study,
popularized
engineering
strategy
is
investigated
which
coefficient
of
expansion
(CTE)
hole
transport
layer
(i.e.,
PDCBT)
cast
onto
inorganic
(CsPbI
2
Br)
at
100
°C.
Contrary
previously
published
results,
the
X‐ray
diffraction
(XRD):Sin
ψ
substrate
curvature
measurement
techniques
show
no
discernible
impact
on
strain.
The
accuracy
XRD:Sin
method
for
measuring
highlighted
contrast
an
analysis
based
shifts
single
XRD
peaks
be
influenced
by
multiple
artifacts.
findings
study
are
accordance
mechanics
theory:
thin
layers
unable
induce
significant
changes
films
force
they
apply
negligible
compared
applied
thick
stiff
substrate.
Язык: Английский
Collaborative Fabrication of High-Quality Perovskite Films for Efficient Solar Modules through Solvent Engineering and Vacuum Flash System
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(29), С. 38017 - 38027
Опубликована: Июль 11, 2024
The
vacuum
flash
solution
method
has
gained
widespread
recognition
in
the
preparation
of
perovskite
thin
films,
laying
foundation
for
industrialization
solar
cells.
However,
low
volatility
dimethyl
sulfoxide
and
its
weak
interaction
with
formamidine-based
perovskites
significantly
hinder
cell
modules
further
improvement
photovoltaic
performance.
In
this
study,
we
describe
an
efficient
reproducible
preparing
large-scale,
highly
uniform
formamidinium
lead
triiodide
(FAPbI3)
films.
This
is
achieved
by
accelerating
rate
leveraging
complex
synergism.
Specifically,
designed
a
dual
pump
system
to
accelerate
depressurization
compared
quality
film
formed
at
different
rates.
Further,
overcome
limitations
posed
DMSO,
substituted
N-methylpyrrolidone
as
ligand
solvent,
creating
stable
intermediate
phase.
After
annealing,
it
can
be
transformed
into
pinhole-free
FAPbI3
film.
Due
superior
these
large
area
module
power
conversion
efficiency
22.7%
active
21.4
cm2.
Additionally,
obtained
official
certified
22.1%
aperture
22
cm2,
demonstrated
long-term
stability.
Язык: Английский
Crystallinity Control and Strain Release in Wide-Bandgap Perovskite Film via Seed-Induced Growth for Efficient Photovoltaics
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(32), С. 42566 - 42576
Опубликована: Авг. 1, 2024
The
seed
method
stands
out
as
a
straightforward
and
efficient
approach
for
fabricating
high-performance
perovskite
solar
cells
(PSCs).
In
this
study,
we
propose
the
utilization
of
an
antisolvent
additive
to
induce
crystal
seeding,
thereby
facilitating
growth
wide-bandgap
grains.
Specifically,
introduce
three
commonly
used
antisolvents─ethyl
acetate
(EA),
isopropanol
(IPA),
chlorobenzene
(CB)─directly
into
precursor
solution
generate
seeds,
which
serve
promote
subsequent
nucleation.
This
antisolvent–crystal
seeding
(ACSM)
results
in
increased
grain
sizes,
reduced
film
defects,
overall
improved
quality.
Consequently,
power
conversion
efficiencies
(PCEs)
1.647
eV
PSCs
with
EA,
IPA,
CB
additives
are
recorded
at
19.86%,
20.61%,
20.45%,
respectively,
surpassing
that
reference
device
PCE
18.83%.
Furthermore,
stability
prepared
through
ACSM
is
notably
enhanced.
Notably,
optimized
IPA
retain
75%
original
after
being
stored
ambient
air
conditions
(25
°C,
RH
∼
15%)
30
days,
better
than
CB-added
(64%)
EA-added
devices
(53%),
while
only
31%
initial
PCE.
Moreover,
even
continuous
thermal
annealing
50
°C
200
h,
IPA-assisted
demonstrate
best
stability,
followed
by
those
exhibiting
poorest
stability.
Язык: Английский
Post‐Treating Grain Boundaries and Surface Defects by Long‐Chain Polymer for Highly Efficient and Stable Perovskite Solar Cells
Small Methods,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 12, 2024
Abstract
Grain
boundaries
(GBs)
and
surface
defects
within
perovskite
films
are
inherent
challenges
that
affect
the
photovoltaic
performance
of
solar
cells
(PSCs.
In
this
work,
Nylon
11
(N11)
is
utilized,
a
long‐chain
polymer,
for
post‐treating
GBs
FAPbI
3
films.
The
multifunctional
groups
N11
exhibit
unique
passivation
abilities,
enabling
self‐regulation
selective
correction
reverse‐charged
defects.
Post‐treating
with
results
in
high‐quality
characterized
by
tight
low
defect
density.
Despite
fabrication
under
full
open‐air
conditions,
post‐treatment
significantly
enhances
power
conversion
efficiency
(PCE)
value
PSCs,
increasing
it
from
reference
21.89%
to
23.54%.
Importantly,
long
alkyl
chain
present
humidity
stability
PSCs.
Unencapsulated
PSCs
treated
maintain
89%
their
initial
PCE
after
exposure
air
30%
relative
(RH)
1000
h,
demonstrating
resilience
elevated
levels.
This
work
highlights
substantial
improvement
achieved
through
N11.
Язык: Английский