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
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(11), P. 7555 - 7564
Published: March 8, 2024
Constructing
low-dimensional/three-dimensional
(LD/3D)
perovskite
solar
cells
can
improve
efficiency
and
stability.
However,
the
design
selection
of
LD
capping
materials
are
incredibly
scarce
for
inverted
(PSCs)
because
layers
often
favor
hole
extraction
impede
electron
extraction.
Here,
we
develop
a
facile
effective
strategy
to
modify
surface
by
passivating
defects
modulating
electrical
properties
incorporating
morpholine
hydriodide
(MORI)
thiomorpholine
(SMORI)
on
surface.
Compared
with
PI
treatment
that
previously
developed,
one-dimensional
(1D)
layer
derived
from
is
transformed
into
two-dimensional
(2D)
(with
MORI
or
SMORI),
achieving
dimension
regulation.
It
shown
2D
SMORI
induces
more
robust
passivation
stronger
n–N
homotype
2D/3D
heterojunctions,
p–i–n
cell
an
24.55%,
which
retains
87.6%
its
initial
after
1500
h
operation
at
maximum
power
point
(MPP).
Furthermore,
5
×
cm2
mini-modules
presented,
active-area
22.28%.
In
addition,
quantum
well
structure
in
increases
moisture
resistance,
suppresses
ion
migration,
improves
PSCs'
structural
environmental
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(17), P. 22079 - 22088
Published: April 19, 2024
In
perovskite
solar
cells
(PSCs),
defects
in
the
interface
and
mismatched
energy
levels
can
damage
device
performance.
Improving
quality
is
an
effective
way
to
achieve
efficient
stable
PSCs.
this
work,
a
multifunctional
dye
molecule,
named
ThPCyAc,
was
designed
synthesized
be
introduced
perovskite/HTM
interface.
On
one
hand,
various
functional
groups
on
acceptor
unit
act
as
Lewis
base
reduce
defect
density
suppress
nonradiative
combinations.
other
stepwise
energy-level
alignment
caused
by
ThPCyAc
decreases
accumulation
of
carriers
for
facilitating
charge
extraction
transmission.
Therefore,
based
devices
exhibit
elevated
open-circuit
voltage
fill
factor,
resulting
best
power
conversion
efficiency
(PCE)
23.16%,
outperforming
control
sample
lacking
layer
(PCE
=
21.49%).
Excitingly,
when
attempting
apply
it
self-assembled
inverted
devices,
still
exhibits
attractive
behavior.
It
worth
noting
that
these
results
indicate
molecules
have
great
potential
developing
materials
obtain
higher-performance
ACS Energy Letters,
Journal Year:
2024,
Volume and Issue:
9(6), P. 2790 - 2799
Published: May 17, 2024
The
stability
of
perovskite
solar
cells
(PSCs)
has
been
considered
as
one
the
major
obstacles
toward
practical
application.
Defects
in
layer
and
ion
infiltration
from
hole
transport
(HTL)
can
trigger
degradation
n-i-p
PSCs.
Herein,
phenylhydrazine-4-sulfonic
acid
(PHPA)
was
employed
an
additive
to
modulate
crystallization
during
film
formation,
enlarging
crystal
grain
sizes
∼3
μm.
Density
functional
theory
(DFT)
calculations
revealed
that
PHPA
could
effectively
inhibit
formation
iodine
vacancies
(VI)
passivate
under-coordinated
Pb2+
ions.
Additionally,
perfluorooctanoic
(PFOA)
adopted
surface
located
dangling
defects,
improve
hydrophobicity,
Li+
migration
HTL
bottom
perovskite,
thus
enhancing
device's
environmental
operational
stability.
Consequently,
resulting
devices
delivered
a
champion
efficiency
25.1%
with
excellent
maximum-power-point
(MPP)
tracking
ACS Energy Letters,
Journal Year:
2023,
Volume and Issue:
8(11), P. 4563 - 4571
Published: Oct. 9, 2023
Despite
the
multifaceted
advantages,
perovskite
solar
cells
(PSCs)
still
suffer
from
low-stability
issues
under
oxygen
or
moisture,
which
are
largely
due
to
weak
bonding
and
surface
defects.
The
resulting
soft
nature
makes
interface
fragile
attack
ambient
water.
Here,
we
report
a
facial
disulfidation
process
via
compatible
organic
dithiolate
compound
inhibit
defects
on
immobilize
lead
ions.
It
is
confirmed
that
groups
can
form
strong
lead–sulfur
(Pb–S)
bonds
efficiently
reduce
nonradiative
recombination.
Additionally,
passivation
cause
downshift
in
energy
bond,
efficient
hole
extraction
at
interface.
As
result,
devices
with
dithiolate-passivated
films
exhibit
better
power
conversion
efficiency
than
control
devices,
mainly
enhanced
open-circuit
voltage.
Pb–S
bond
improves
device
stability
by
over
85%
of
its
initial
after
2000
h.
In
addition,
leakage
substantially
suppressed
passivation.
Journal of Materials Chemistry A,
Journal Year:
2024,
Volume and Issue:
12(7), P. 4067 - 4076
Published: Jan. 1, 2024
A
trifluoromethoxy
isomerization
strategy
to
modulate
intermolecular
interactions
is
proposed
balance
the
of
hole
transport
materials
and
their
interface
with
perovskites.
