Enhancing
hole
extraction
and
transfer
of
the
transport
layer
(HTL)
is
urgently
needed
to
achieve
excellent
performance
perovskite
solar
cells.
Herein,
a
novel
phthalocyanine
(TQ)
has
been
introduced
into
Spiro-OMeTAD
finely
optimize
properties
HTL
for
achieving
better
performance.
It
demonstrated
that
TQ
incorporation
can
effectively
enhance
extraction/transfer
reduce
charge
recombination
in
device.
The
TQ-treated
device
yields
an
improved
power
conversion
efficiency
24.29%
from
21.91%.
Remarkably,
these
unencapsulated
devices
demonstrate
remarkable
moisture,
light,
thermal
stabilities.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(35)
Published: June 27, 2024
Abstract
Inverted
perovskite
solar
cells
(PSCs)
have
attracted
considerable
attention
due
to
their
distinct
advantages,
including
minimal
hysteresis,
cost‐effectiveness,
and
suitability
for
tandem
applications.
Nevertheless,
the
solution
processing
low
formation
energy
of
perovskites
inevitably
lead
numerous
defects
formed
at
both
bulk
interfaces
layer.
These
can
act
as
non‐radiative
recombination
centers,
significantly
impeding
carrier
transport
posing
a
substantial
obstacle
stability
further
enhancing
power
conversion
efficiency
(PCE).
This
review
delves
into
detailed
discussion
nature
origin
characterization
techniques
employed
defect
identification.
Furthermore,
it
systematically
summarizes
methods
detection
approaches
passivating
interface
within
film
in
inverted
PSCs.
Finally,
this
offers
perspective
on
employing
upscaling
passivation
engineering
modules.
It
is
hoped
provides
insights
PSCs
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: Jan. 11, 2025
Suppressing
deep-level
defects
at
the
perovskite
bulk
and
surface
is
indispensable
for
reducing
non-radiative
recombination
losses
improving
efficiency
stability
of
solar
cells
(PSCs).
In
this
study,
two
Lewis
bases
based
on
chalcogen-thiophene
(n-Bu4S)
selenophene
(n-Bu4Se)
having
tetra-pyridine
as
bridge
are
developed
to
passivate
in
film.
The
uncoordinated
Pb2+
iodine
vacancy
can
interact
with
chalcogen-concave
group
pyridine
through
formation
acid-base
adduct,
particularly
both
be
surrounded
by
concave
molecules,
resulting
effective
suppression
charge
recombination.
This
approach
enables
a
power
conversion
(PCE)
high
25.37%
(25.18%
certified)
n-i-p
PSCs
stable
operation
65
°C
1-sun
illumination
1300
hours
N2
(ISOS-L-2
protocol),
retaining
94%
initial
efficiency.
Our
work
provides
insight
into
bowl-shaped
base
passivation
coordinated
strategy
high-performance
photovoltaic
devices.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 30, 2024
Abstract
The
inherent
defects
(lead
iodide
inversion
and
iodine
vacancy)
in
perovskites
cause
non‐radiative
recombination
there
is
also
ion
migration,
decreasing
the
efficiency
stability
of
perovskite
devices.
Eliminating
these
critical
for
achieving
high‐efficiency
solar
cells.
Herein,
an
organic
molecule
with
multiple
active
sites
(4,7‐bromo‐5,6‐fluoro‐2,1,3‐phenylpropyl
thiadiazole,
M4)
introduced
to
modify
upper
interface
perovskites.
When
M4
interacts
surface,
bromine
(Br)
site
lead
(Pb)
at
surface
repair
atomic
vacancy
defects.
fluorine
(F)
Pb
correct
octahedral
crystal
lattice
distortions
eliminate
I
Additionally,
sulfur–iodine
(S–I)
interactions
reduce
I–I
dimerization
It
calculated
that
energy
level
aligns
band
gap,
promoting
charge
transfer.
As
a
result,
devices
achieve
25.1%,
stabilized
power
output
(SPO)
25.0%,
voltage
1.19
V,
fill
factor
85.2%.
device
retains
95%
its
initial
after
2000
h
ageing
nitrogen
atmosphere.
Thus,
multi‐point
cooperative
passivation
provides
effective
method
improve
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(52)
Published: Aug. 28, 2024
Abstract
[4‐(3,6‐dimethyl‐9H‐carbazol‐9yl)butyl]phosphonic
acid
(Me‐4PACz)
self‐assembly
material
has
been
recognized
as
a
highly
effective
approach
for
mitigating
nickel
oxide
(NiO
x
)
surface‐related
challenges
in
inverted
perovskite
solar
cells
(IPSCs).
However,
its
uneven
film
generation
and
failure
to
effectively
passivate
the
buried
interface
defects
limit
device‘s
performance
improvement
potential.
Herein,
p‐xylylenediphosphonic
(p‐XPA)
containing
bilateral
phosphate
groups
(−PO
3
H
2
is
introduced
an
layer
between
NiO
/Me‐4PACz
layer.
P‐XPA
can
flatten
surface
of
hole
transport
optimize
contact.
Meanwhile,
p‐XPA
achieves
better
energy
level
alignment
promotes
interfacial
transport.
In
addition,
−PO
chelate
with
Pb
2+
form
hydrogen
bond
FA
+
(formamidinium
cation),
thereby
suppressing
non‐radiative
recombination
loss.
Consequently,
IPSC
modification
champion
power
conversion
efficiency
25.87
%
(certified
at
25.45
%)
laboratory
scale
(0.0448
cm
).
The
encapsulated
target
device
exhibits
operational
stability.
Even
after
1100
hours
maximum
point
tracking
50
°C,
remains
impressive
82.7
initial
efficiency.
Molecules
featuring
passivation
contact
inhibit
recombination,
providing
enhancing
stability
devices.
ACS Energy Letters,
Journal Year:
2024,
Volume and Issue:
9(9), P. 4283 - 4292
Published: Aug. 7, 2024
There
is
a
significant
challenge
of
charge
recombination
at
the
perovskite/electron
transport
layer
(ETL),
coupled
with
need
optimized
interface
transfer
in
inverted
perovskite
solar
cells
(PSCs).
In
this
work,
an
organometallic
ferrocene-based
molecule,
ferrocenyl-bis-thieno[3,2-b]thiophene-2-carboxylate
(FcTTPc),
inherent
carboxylate
and
thiophene
functionalities
surrounding
central
ferrocene
motif,
meticulously
designed
synthesized
for
modification
perovskite/ETL
interface.
The
groups
FcTTPc
molecule
interact
strongly
components,
effectively
passivating
defects.
Furthermore,
group
can
engage
robust
π–π
interactions
ETL,
thereby
enhancing
transport.
Following
FcTTPc,
improved
alignment
energy
levels
achieved,
significantly
optimizing
carrier
Due
to
via
champion
PSC
achieves
PCE
25.39%.
FcTTPc-modified
devices
maintained
over
96%
their
initial
efficiency
under
40%
relative
humidity
conditions
1500
h.
Hybrid Advances,
Journal Year:
2024,
Volume and Issue:
6, P. 100252 - 100252
Published: July 24, 2024
Effects
of
substitution
halogen
anions
and
addition
alkali
metal
cations
for
guanidinium
(GA)-ethylammonium
(EA)
hybrid-doped
perovskite
solar
cells
were
investigated
by
fabricating
devices
comparing
their
photovoltaic
properties.
The
compositions
the
additives
found
to
contribute
improvement
preferred
orientations
crystals,
order
effectiveness
was
I,
Cl,
Br.
In
addition,
contributed
conversion
efficiencies,
3
%
cesium
at
CH3NH3
site
most
effective.
It
also
that
short-circuit
current
densities
fill
factors
depended
on
(100)
crystal
orientation
compounds.
Perovskite
solar
cells
(PSCs)
have
attracted
much
attention
in
the
global
photovoltaic
field
due
to
their
excellent
optoelectronic
properties.
However,
intrinsic
crystalline
properties
and
preparation
methods
of
perovskites
result
numerous
defects
residual
stress
perovskite
film.
To
address
this
issue,
additive
3-methylthio-1-propylammonium
bromide
(3MeSPABr)
was
added
precursor
solution,
PSCs
with
an
inverted
structure
via
a
low-pressure-assisted
solution
process
were
fabricated.
The
found
interact
through
strong
coordination
hydrogen
bonding,
passivate
defects,
alleviate
tensile
stress.
power
conversion
efficiency
(PCE)
as
high
21.99%
obtained.
Besides,
addition
3MeSPABr
also
increases
hydrophobicity
film
improves
stability
PSCs.
