Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(10)
Published: Jan. 7, 2024
Abstract
The
pursuit
of
commercializing
perovskite
photovoltaics
is
driving
the
development
various
scalable
crystallization
techniques.
Among
them,
gas
quenching
a
promising
approach
for
high‐throughput
deposition
films.
However,
films
prepared
by
gas‐quenching
assisted
blade
coating
are
susceptible
to
formation
pinholes
and
frequently
show
inferior
crystallinity
if
interplay
between
film
coating,
drying,
kinetics
not
fully
optimized.
That
arguably
requires
thorough
understanding
how
single
processing
steps
influence
printed
Here,
in
situ
optical
spectroscopies
integrated
into
doctor‐blading
setup
that
allows
real‐time
monitor
during
process.
It
found
essential
role
treatment
achieving
smooth
compact
controlling
nucleation
rate.
Moreover,
with
assistance
phase‐field
simulations,
excessive
methylammonium
iodide
revealed
increase
grain
size
accelerating
crystal
growth
These
results
tailored
control
rate
critical
optimal
quality,
leading
solar
cells
champion
power
conversion
efficiency
19.50%
mini
modules
15.28%
achieved.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(13)
Published: Feb. 16, 2024
Abstract
To
elevate
the
performance
and
durability
of
perovskite
solar
cells,
a
holistic
approach
to
mitigating
defects
throughout
device
is
essential.
While
advancements
in
refining
top
interfaces
have
been
significant,
potential
stabilizing
buried
grain
boundaries
has
not
fully
tapped.
The
research
underscores
transformative
impact
guanidine
phosphate
(GP),
chemical
agent
that
converts
surplus
PbI
2
into
low‐dimensional
perovskite,
thus
reinforcing
stability
both
boundaries.
Employing
GP
on
quantum
dot
tin
dioxide
(QD‐SnO
)
surfaces
revealed
an
exceptional
wrapping
effect
at
these
critical
junctures,
as
by
high‐resolution
transmission
electron
microscopy.
This
novel
enveloping
strategy
only
passivates
but
also
delays
cooling
hot
carriers,
thereby
diminishing
charge
carrier
recombination.
exhibits
enhanced
power
conversion
efficiency,
rising
from
23.16%
24.55%.
Moreover,
modified
sustains
over
90%
their
initial
efficiency
after
1000
h
maximum
point
tracking
under
one
sun
illumination
maintain
1400
moderate
humidity,
all
achieved
without
encapsulation.
breakthrough
points
robust
method
for
augmenting
cell,
promising
more
durable,
efficient
energy.
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(16)
Published: Feb. 19, 2024
Abstract
Formamidinium
lead
iodide
(FAPbI
3
)
represents
an
optimal
absorber
material
in
perovskite
solar
cells
(PSCs),
while
the
application
of
FAPbI
inverted‐structured
PSCs
has
yet
to
be
successful,
mainly
owing
its
inferior
film‐forming
on
hydrophobic
or
defective
hole‐transporting
substrates.
Herein,
we
report
a
substantial
improvement
‐based
inverted
PSCs,
which
is
realized
by
multifunctional
amphiphilic
molecular
hole‐transporter,
(2‐(4‐(10
H
‐phenothiazin‐10‐yl)phenyl)‐1‐cyanovinyl)phosphonic
acid
(PTZ−CPA).
The
phenothiazine
(PTZ)
based
PTZ−CPA,
carrying
cyanovinyl
phosphonic
(CPA)
group,
forms
superwetting
hole‐selective
underlayer
that
enables
facile
deposition
high‐quality
thin
films.
Compared
previously
established
carbazole‐based
(2‐(3,6‐dimethoxy‐9
‐carbazol‐9‐yl)ethyl)phosphonic
(MeO−2PACz),
crystallinity
enhanced
and
electronic
defects
are
passivated
PTZ−CPA
more
effectively,
resulting
remarkable
increases
photoluminescence
quantum
yield
(four‐fold)
Shockley‐Read‐Hall
lifetime
(eight‐fold).
Moreover,
shows
larger
dipole
moment
improved
energy
level
alignment
with
,
benefiting
interfacial
hole‐collection.
Consequently,
achieve
unprecedented
efficiency
25.35
%
under
simulated
air
mass
1.5
(AM1.5)
sunlight.
device
commendable
long‐term
stability,
maintaining
over
90
initial
after
continuous
operation
at
40
°C
for
2000
hours.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(17)
Published: March 4, 2024
Abstract
The
perovskite/silicon
tandem
solar
cell
(TSC)
has
attracted
tremendous
attention
due
to
its
potential
breakthrough
the
theoretical
efficiency
set
for
single‐junction
cells.
However,
perovskite
(PSC)
designed
as
top
component
suffers
from
severe
photo‐induced
halide
segregation
owing
mixed‐halide
strategy
achieving
desirable
wide‐bandgap
(1.68
eV).
Developing
pure‐iodide
perovskites
is
a
promising
route
fabricate
photostable
TSCs.
Here,
we
report
efficient
and
PSCs
made
an
anti‐solvent‐free
(ASF)
technique.
ASF
process
achieved
by
mixing
two
precursor
solutions,
both
of
which
are
capable
depositing
corresponding
films
without
involving
anti‐solvent.
mixed
solution
finally
forms
Cs
0.3
DMA
0.2
MA
0.5
PbI
3
film
with
bandgap
1.68
eV.
Furthermore,
methylammonium
chloride
additive
applied
enhance
crystallinity
reduce
trap
density
films.
As
result,
PSC
delivers
high
21.30
%
excellent
photostability,
highest
this
type
method
significantly
improves
device
reproducibility
compared
devices
other
anti‐solvent
methods.
Our
findings
provide
novel
recipe
prepare
PSCs.
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.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(10)
Published: Jan. 7, 2024
Abstract
The
pursuit
of
commercializing
perovskite
photovoltaics
is
driving
the
development
various
scalable
crystallization
techniques.
Among
them,
gas
quenching
a
promising
approach
for
high‐throughput
deposition
films.
However,
films
prepared
by
gas‐quenching
assisted
blade
coating
are
susceptible
to
formation
pinholes
and
frequently
show
inferior
crystallinity
if
interplay
between
film
coating,
drying,
kinetics
not
fully
optimized.
That
arguably
requires
thorough
understanding
how
single
processing
steps
influence
printed
Here,
in
situ
optical
spectroscopies
integrated
into
doctor‐blading
setup
that
allows
real‐time
monitor
during
process.
It
found
essential
role
treatment
achieving
smooth
compact
controlling
nucleation
rate.
Moreover,
with
assistance
phase‐field
simulations,
excessive
methylammonium
iodide
revealed
increase
grain
size
accelerating
crystal
growth
These
results
tailored
control
rate
critical
optimal
quality,
leading
solar
cells
champion
power
conversion
efficiency
19.50%
mini
modules
15.28%
achieved.
