Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
16(1)
Published: May 23, 2024
Perovskite
solar
cells
(PSCs)
offer
low
costs
and
high
power
conversion
efficiency.
However,
the
lack
of
long-term
stability,
primarily
stemming
from
interfacial
defects
susceptible
metal
electrodes,
hinders
their
practical
application.
In
past
few
years,
two-dimensional
(2D)
materials
(e.g.,
graphene
its
derivatives,
transitional
dichalcogenides,
MXenes,
black
phosphorus)
have
been
identified
as
a
promising
solution
to
solving
these
problems
because
dangling
bond-free
surfaces,
layer-dependent
electronic
band
structures,
tunable
functional
groups,
inherent
compactness.
Here,
recent
progress
2D
material
toward
efficient
stable
PSCs
is
summarized,
including
role
both
interface
electrodes.
We
discuss
beneficial
effects
on
perovskite
growth,
energy
level
alignment,
defect
passivation,
well
blocking
external
stimulus.
particular,
unique
properties
form
van
der
Waals
heterojunction
at
bottom
are
emphasized.
Finally,
perspectives
further
development
using
provided,
such
designing
high-quality
heterojunction,
enhancing
uniformity
coverage
nanosheets,
developing
new
materials-based
Science,
Journal Year:
2022,
Volume and Issue:
377(6613), P. 1425 - 1430
Published: Sept. 22, 2022
Realizing
solution-processed
heterostructures
is
a
long-enduring
challenge
in
halide
perovskites
because
of
solvent
incompatibilities
that
disrupt
the
underlying
layer.
By
leveraging
dielectric
constant
and
Gutmann
donor
number,
we
could
grow
phase-pure
two-dimensional
(2D)
perovskite
stacks
desired
composition,
thickness,
bandgap
onto
3D
without
dissolving
substrate.
Characterization
reveals
3D-2D
transition
region
20
nanometers
mainly
determined
by
roughness
bottom
Thickness
dependence
2D
layer
anticipated
trends
for
n-i-p
p-i-n
architectures,
which
consistent
with
band
alignment
carrier
transport
limits
perovskites.
We
measured
photovoltaic
efficiency
24.5%,
exceptional
stability
T99
(time
required
to
preserve
99%
initial
efficiency)
>2000
hours,
implying
3D/2D
bilayer
inherits
intrinsic
durability
compromising
efficiency.
Nature Energy,
Journal Year:
2023,
Volume and Issue:
8(5), P. 515 - 525
Published: April 17, 2023
Abstract
Perovskite
solar
cells
have
reached
a
power
conversion
efficiency
over
25%,
and
the
engineering
of
interface
between
perovskite
hole
transport
layer
(HTL)
has
been
crucial
to
achieve
high
performance.
Here
we
design
bifunctional
molecule
CBz-PAI
with
carbazole-triphenylamine
phenylammonium
iodide
units
passivate
defects
at
perovskite/HTL
interface.
Owing
favourable
energy
level
alignment
perovskite,
acts
as
shuttle
HTL.
This
minimizes
difference
quasi-Fermi
splitting
or
‘internal’
V
oc
,
external
device
thus
reducing
voltage
losses.
As
result,
incorporating
reach
stabilized
24.7%
maintain
92.3%
initial
after
1,000
h
under
damp
heat
test
(85
°C
85%
relative
humidity)
94.6%
1,100
maximum
point-tracking
conditions.
Communications Materials,
Journal Year:
2022,
Volume and Issue:
3(1)
Published: Sept. 6, 2022
Abstract
Different
2D
and
quasi-2D
perovskite
materials
have
demonstrated
significant
improvements
in
the
device
stability
compared
to
3D
perovskites
due
their
increased
hydrophobicity
suppressed
ion
migration.
However,
fundamental
investigations
of
these
been
scarce
consequently
detailed
understanding
processes
responsible
for
experimental
phenomena
are
often
lacking
despite
huge
interest
materials.
Even
more
importantly,
there
a
limited
number
structure-property
studies
different
material
compositions,
research
is
generally
by
trial
error
rather
than
design.
Here
we
discuss
issues
identify
questions
which
need
be
answered
design
with
further
improvements.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
34(6)
Published: Oct. 27, 2023
Abstract
Halide
perovskites,
in
the
form
of
thin
films
and
colloidal
nanocrystals,
have
recently
taken
semiconductor
optoelectronics
research
by
storm,
emerged
as
promising
candidates
for
high‐performance
solar
cells,
light‐emitting
diodes
(LEDs),
lasers,
photodetectors,
radiation
detectors.
The
impressive
optical
optoelectronic
properties,
along
with
rapid
increase
efficiencies
cells
LEDs,
greatly
attracted
researchers
across
many
disciplines.
However,
most
advances
made
so
far
terms
preparation
(colloidal
nanocrystals
films),
devices
highest
are
based
on
Pb‐based
halide
which
raised
concerns
over
their
commercialization
due
to
toxicity
Pb.
This
has
triggered
search
lower‐toxicity
Pb‐free
perovskites
led
significant
progress
last
few
years.
In
this
roadmap
review,
different
expertise
joined
together
summarize
latest
progress,
outstanding
challenges,
future
directions
perovskite
regarding
synthesis,
spectroscopy,
devices,
guide
currently
working
area
well
those
that
will
join
field
future.
Coatings,
Journal Year:
2022,
Volume and Issue:
12(8), P. 1089 - 1089
Published: July 31, 2022
Perovskite
solar
cells
(PSC)
have
been
identified
as
a
game-changer
in
the
world
of
photovoltaics.
This
is
owing
to
their
rapid
development
performance
efficiency,
increasing
from
3.5%
25.8%
decade.
Further
advantages
PSCs
include
low
fabrication
costs
and
high
tunability
compared
conventional
silicon-based
cells.
paper
reviews
existing
literature
discuss
structural
fundamental
features
that
resulted
significant
gains.
Key
electronic
optical
properties
electron
mobility
(800
cm2/Vs),
long
diffusion
wavelength
(>1
μm),
absorption
coefficient
(105
cm−1).
Synthesis
methods
are
considered,
with
solution-based
manufacturing
being
most
cost-effective
common
industrial
method.
Furthermore,
this
review
identifies
issues
impeding
large-scale
commercialisation
actions
needed
resolve
them.
The
main
issue
stability
particularly
vulnerable
moisture,
caused
by
inherently
weak
bonds
perovskite
structure.
Scalability
also
big
spin-coating
technique
used
for
laboratory-scale
tests
not
appropriate
production.
highlights
need
transition
techniques
compatible
roll-to-roll
processing
achieve
throughput.
Finally,
discusses
future
innovations,
more
environmentally
friendly
lead-free
high-efficiency
multi-junction
Overall,
provides
critical
evaluation
advances,
opportunities
challenges
PSCs.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
62(6)
Published: Dec. 8, 2022
Minimizing
surface
defect
is
vital
to
further
improve
power
conversion
efficiency
(PCE)
and
stability
of
inorganic
perovskite
solar
cells
(PSCs).
Herein,
we
designed
a
passivator
trifluoroacetamidine
(TFA)
suppress
CsPbI3-x
Brx
film
defects.
The
amidine
group
TFA
can
strongly
chelate
onto
the
iodide
vacancy,
strengthened
by
additional
hydrogen
bonds.
Moreover,
three
fluorine
atoms
allow
strong
intermolecular
connection
via
bonds,
thus
constructing
robust
shield
against
moisture.
TFA-treated
PSCs
exhibit
remarkably
suppressed
recombination,
yielding
record
PCEs
21.35
%
17.21
for
0.09
cm2
1.0
device
areas,
both
which
are
highest
all-inorganic
so
far.
also
achieves
PCE
39.78
under
indoor
illumination,
photovoltaic
devices.
Furthermore,
greatly
improves
ambient
preserving
93
initial
after
960
h.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(39)
Published: June 26, 2023
Perovskite
solar
cells
(PSCs)
have
demonstrated
over
25%
power
conversion
efficiency
(PCE)
via
efficient
surface
passivation.
Unfortunately,
state-of-the-art
perovskite
post-treatment
strategies
can
solely
heal
the
top
interface
defects.
Herein,
an
ion-diffusion
management
strategy
is
proposed
to
concurrently
modulate
interfaces,
buried
and
bulk
interfaces
(i.e.,
grain
boundaries)
of
film,
enabling
all-interface
defect
Specifically,
this
method
enabled
by
applying
double
interactive
salts
octylammonium
iodide
(OAI)
guanidinium
chloride
(GACl)
onto
3D
surface.
It
revealed
that
hydrogen-bonding
interaction
between
OA+
GA+
decelerates
diffusion
therefore
forms
a
dimensionally
broadened
2D
capping
layer.
Additionally,
Cl-
determines
composition
PSCs.
As
result,
n-inter-i-inter-p,
i.e.,
five-layer
structured
PSCs
be
obtained
with
champion
PCE
25.43%
(certified
24.4%).
This
approach
also
enables
substantially
improved
operational
stability
cells.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(52)
Published: April 17, 2023
Abstract
In
recent
years,
organic‐inorganic
halide
perovskites
are
now
emerging
as
the
most
attractive
alternatives
for
next‐generation
photovoltaic
devices,
due
to
their
excellent
optoelectronic
characteristics
and
low
manufacturing
cost.
However,
resultant
perovskite
solar
cells
(PVSCs)
intrinsically
unstable
owing
ion
migration,
which
severely
impedes
performance
enhancement,
even
with
device
encapsulation.
There
is
no
doubt
that
investigation
of
migration
summarization
advances
in
inhibition
strategies
necessary
develop
“state‐of‐the‐art”
PVSCs
high
intrinsic
stability
accelerated
commercialization.
This
review
systematically
elaborates
on
generation
fundamental
mechanisms
PVSCs,
impact
hysteresis,
phase
segregation,
operational
stability,
characterizations
PVSCs.
Then,
many
related
works
inhibiting
toward
highly
efficient
stable
summarized.
Finally,
perspectives
current
obstacles
prospective
boost
meet
all
requirements
commercialization
success
