Small Methods,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 21, 2024
Abstract
Perovskite
solar
cells
(PSC)
have
developed
rapidly
since
the
past
decade
with
aim
to
produce
highly
efficient
photovoltaic
technology
at
a
low
cost.
Recently,
physical
and
chemical
defects
buried
interface
of
PSC
including
vacancies,
impurities,
lattice
strain,
voids
are
identified
as
next
formidable
hurdle
further
advancement
performance
devices.
The
presence
these
has
unfavorably
impacted
many
optoelectronic
properties
in
PSC,
such
band
alignment,
charge
extraction/recombination
dynamics,
ion
migration
behavior,
hydrophobicity.
Herein,
broad
but
critical
discussion
on
various
essential
aspects
related
is
provided.
In
particular,
existing
surface
underlying
transporting
layer
(CTL)
bottom
perovskite
film
initially
elaborated.
situ
ex
characterization
approaches
adopted
unveil
hidden
elucidated
determine
their
influence
efficiency,
operational
stability,
photocurrent–voltage
hysteresis
PSC.
A
myriad
innovative
strategies
defect
management
CTL,
introduction
passivation
materials,
strain
engineering,
morphological
control
used
address
also
systematically
catalyze
development
more
efficient,
reliable,
commercially
viable
Small,
Journal Year:
2024,
Volume and Issue:
20(34)
Published: April 4, 2024
Abstract
The
anti‐solvent‐free
fabrication
of
high‐efficiency
perovskite
solar
cells
(PSCs)
holds
immense
significance
for
the
transition
from
laboratory‐scale
to
large‐scale
commercial
applications.
However,
device
performance
is
severely
hindered
by
increased
occurrence
surface
defects
resulting
lack
control
over
nucleation
and
crystallization
using
anti‐solvent
methods.
In
this
study,
2‐(naphthalen‐2‐yl)ethylamine
hydriodide
(NEAI)
employed
as
passivator
films
without
any
anti‐solvent.
Naphthalene
demonstrates
strong
π‐π
conjugation,
which
aids
in
efficient
extraction
charge
carriers.
Additionally,
naphthalene‐ring
moieties
form
a
tight
attachment
surface.
After
NEAI
treatment,
FA
I
vacancies
are
selectively
occupied
NEA
+
−
respectively,
thus
effectively
passivating
isolating
moisture.
Ultimately,
optimized
NEAI‐treated
achieves
promising
power
conversion
efficiency
(PCE)
24.19%
(with
certified
23.94%),
featuring
high
fill
factor
83.53%.
It
stands
out
one
reported
PCEs
achieved
PSCs
spin‐coating
technique
need
so
far.
Furthermore,
can
maintain
≈87%
its
initial
PCE
after
2000
h
ambient
air
with
relative
humidity
30%
±
5%.
ChemSusChem,
Journal Year:
2024,
Volume and Issue:
17(21)
Published: May 21, 2024
Abstract
Perovskite
solar
cells
(PSCs)
are
usually
modified
and
passivated
to
improve
their
performance
stability.
The
interface
modification
bulk
doping
the
two
basic
strategies.
Fluorine
(F)‐containing
materials
highly
favored
because
of
unique
hydrophobicity
coordination
ability.
This
review
discusses
characteristics
F,
principles
improving
photovoltaic
stability
PSC
devices
using
F‐containing
materials.
We
systematically
summarized
latest
progress
in
application
achieve
efficient
stable
PSCs
on
several
key
layers.
It
is
believed
that
this
work
will
afford
significant
understanding
inspirations
toward
future
directions
PSCs,
provide
profound
insights
for
development
PSCs.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 11, 2024
Abstract
The
properties
of
an
interface
at
the
hole
transport
layer
(HTL)/perovskite
are
crucial
for
performance
and
stability
perovskite
solar
cells
(PVSCs),
especially
buried
between
HTL
layer.
Here,
a
molecular
named
potassium
1‐trifluoroboratomethylpiperidine
(3FPIP)
assistant‐modified
bottom
strategy
is
proposed
to
improve
charge
transfer
capability
balances
energy
level
perovskite.
BF
3
−
in
3FPIP
molecule
interacts
with
undercoordinated
Pb
2+
passivate
iodine
vacancies
enhance
PVSCs
performance.
Furthermore,
infiltration
K
+
ions
into
molecules
enhances
crystallinity
Therefore,
treatment
exhibit
champion
24.6%.
More
importantly,
corresponding
devices
represent
outstanding
ambient
stability,
remaining
92%
initial
efficiency
after
1200
h.
This
work
provides
new
method
engineering
functional
group
synergy.
Small Methods,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 21, 2024
Abstract
Perovskite
solar
cells
(PSC)
have
developed
rapidly
since
the
past
decade
with
aim
to
produce
highly
efficient
photovoltaic
technology
at
a
low
cost.
Recently,
physical
and
chemical
defects
buried
interface
of
PSC
including
vacancies,
impurities,
lattice
strain,
voids
are
identified
as
next
formidable
hurdle
further
advancement
performance
devices.
The
presence
these
has
unfavorably
impacted
many
optoelectronic
properties
in
PSC,
such
band
alignment,
charge
extraction/recombination
dynamics,
ion
migration
behavior,
hydrophobicity.
Herein,
broad
but
critical
discussion
on
various
essential
aspects
related
is
provided.
In
particular,
existing
surface
underlying
transporting
layer
(CTL)
bottom
perovskite
film
initially
elaborated.
situ
ex
characterization
approaches
adopted
unveil
hidden
elucidated
determine
their
influence
efficiency,
operational
stability,
photocurrent–voltage
hysteresis
PSC.
A
myriad
innovative
strategies
defect
management
CTL,
introduction
passivation
materials,
strain
engineering,
morphological
control
used
address
also
systematically
catalyze
development
more
efficient,
reliable,
commercially
viable
