Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(36)
Published: June 11, 2024
Abstract
Developing
large‐scale
monolithic
perovskite/silicon
tandem
devices
based
on
industrial
Czochralski
silicon
wafers
will
likely
have
to
adopt
double‐side
textured
architecture,
given
their
optical
benefits
and
low
manufacturing
costs.
However,
the
surface
engineering
strategies
that
are
widely
used
in
solution‐processed
perovskites
regulate
interface
properties
not
directly
applicable
micrometric
textures.
Here,
we
devise
a
passivation
strategy
by
dynamic
spray
coating
(DSC)
fluorinated
thiophenethylammonium
ligands,
combining
advantages
of
providing
conformal
coverage
suppressing
phase
conversion
surfaces.
From
viewpoint
molecular
engineering,
theoretical
calculation
experimental
results
demonstrate
introducing
trifluoromethyl
group
provide
more
effective
through
strong
interaction
energy
alignment
forming
dipole
layer.
Consequently,
DSC
treatment
this
bifunctional
molecule
enables
cells
achieve
certified
stabilized
power
efficiency
30.89
%.
In
addition,
encapsulated
display
excellent
operational
stability
retaining
over
97
%
initial
performance
after
600
h
continuous
illumination.
Energy Materials and Devices,
Journal Year:
2024,
Volume and Issue:
2(2), P. 9370038 - 9370038
Published: June 1, 2024
Self-assembled
monolayers
(SAMs)
have
recently
appeared
as
excellent
hole
transport
materials
in
inverted
perovskite
solar
cells
(PSCs)
since
they
can
significantly
minimize
parasitic
absorption,
easily
regulate
energy
level
alignment,
and
passivate
defects
within
perovskite.
Herein,
we
design
synthesize
a
novel
dimethyl
acridine-based
SAM,
[2-(9,
10-dihydro-9,
9-dimethylacridine-10-yl)ethyl]phosphonic
acid
(abbreviated
2PADmA),
employ
it
hole-transporting
layer
(HTL)
PSCs.
Experimental
results
show
that
the
2PADmA
SAM
modulate
crystallization,
facilitate
carrier
transport,
defects,
reduce
nonradiative
recombination.
As
result,
2PADmA-based
device
achieves
an
enhanced
power
conversion
efficiency
(PCE)
of
24.01%
along
with
improved
fill
factor
(FF)
83.92%
comparison
commonly
reported
2PACz-based
control
PCE
22.32%
FF
78.42%,
while
both
devices
present
comparable
open-circuit
voltage
(VOC)
short-circuit
current
density
(JSC).
In
addition,
exhibit
outstanding
ambient
thermal
stabilities:
unencapsulated
retain
respectively
about
98%
87%
their
initial
PCEs
after
storage
dark
conditions
for
1080
h
heating
at
85°C
around
400
h,
which
are
superior
to
device.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(22), P. 28905 - 28916
Published: May 22, 2024
The
two-step
sequential
deposition
strategy
has
been
widely
recognized
in
promoting
the
research
and
application
of
perovskite
solar
cells,
but
rapid
reaction
organic
salts
with
lead
iodide
inevitably
affects
growth
crystals,
accompanied
by
generation
more
defects.
In
this
study,
regulation
crystal
was
achieved
a
method
mixing
1-naphthylmethylammonium
bromide
(NMABr)
salts.
results
show
that
addition
NMABr
effectively
delays
aggregation
crystallization
behavior
salts;
thereby,
optimal
(001)
orientation
is
promoted.
Based
on
phenomenon
delaying
process
perovskite,
"slow-release
effect
assisted
crystallization"
defined.
Moreover,
incorporation
Br
element
expands
band
gap
mitigates
material
defects
as
nonradiative
recombination
centers.
Consequently,
power
conversion
efficiency
(PCE)
enhanced
cells
(PSCs)
reaches
20.20%.
It
noteworthy
hydrophobic
nature
naphthalene
moiety
can
enhance
humidity
resistance
PSCs,
phase
does
not
decompose
for
than
3000
h
(30–40%
RH),
enabling
it
to
retain
90%
its
initial
even
after
exposure
nitrogen
environment
1200
h.
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(36)
Published: June 11, 2024
Abstract
Developing
large‐scale
monolithic
perovskite/silicon
tandem
devices
based
on
industrial
Czochralski
silicon
wafers
will
likely
have
to
adopt
double‐side
textured
architecture,
given
their
optical
benefits
and
low
manufacturing
costs.
However,
the
surface
engineering
strategies
that
are
widely
used
in
solution‐processed
perovskites
regulate
interface
properties
not
directly
applicable
micrometric
textures.
Here,
we
devise
a
passivation
strategy
by
dynamic
spray
coating
(DSC)
fluorinated
thiophenethylammonium
ligands,
combining
advantages
of
providing
conformal
coverage
suppressing
phase
conversion
surfaces.
From
viewpoint
molecular
engineering,
theoretical
calculation
experimental
results
demonstrate
introducing
trifluoromethyl
group
provide
more
effective
through
strong
interaction
energy
alignment
forming
dipole
layer.
Consequently,
DSC
treatment
this
bifunctional
molecule
enables
cells
achieve
certified
stabilized
power
efficiency
30.89
%.
In
addition,
encapsulated
display
excellent
operational
stability
retaining
over
97
%
initial
performance
after
600
h
continuous
illumination.
