Science,
Journal Year:
2022,
Volume and Issue:
377(6603), P. 302 - 306
Published: June 23, 2022
The
performance
of
perovskite
solar
cells
with
inverted
polarity
(p-i-n)
is
still
limited
by
recombination
at
their
electron
extraction
interface,
which
also
lowers
the
power
conversion
efficiency
(PCE)
p-i-n
perovskite-silicon
tandem
cells.
A
MgF
x
interlayer
thickness
~1
nanometer
perovskite/C
60
interface
favorably
adjusts
surface
energy
layer
through
thermal
evaporation,
facilitates
efficient
and
displaces
C
from
to
mitigate
nonradiative
recombination.
These
effects
enable
a
champion
open-circuit
voltage
1.92
volts,
an
improved
fill
factor
80.7%,
independently
certified
stabilized
PCE
29.3%
for
monolithic
cell
square
centimeter
in
area.
retained
~95%
its
initial
after
damp-heat
testing
(85°C
85%
relative
humidity)
>1000
hours.
Science,
Journal Year:
2021,
Volume and Issue:
373(6557), P. 902 - 907
Published: Aug. 19, 2021
The
interfaces
of
perovskite
solar
cells
(PSCs)
are
important
in
determining
their
efficiency
and
stability,
but
the
morphology
stability
imbedded
perovskite-substrate
have
received
less
attention
than
top
interfaces.
We
found
that
dimethyl
sulfoxide
(DMSO),
which
is
a
liquid
additive
broadly
applied
to
enhance
film
morphology,
was
trapped
during
formation
led
voids
at
accelerated
degradation
under
illumination.
Partial
replacement
DMSO
with
solid-state
carbohydrazide
reduces
interfacial
voids.
A
maximum
stabilized
power
conversion
(PCE)
23.6%
realized
for
blade-coated
p-type/intrinsic/n-type
(p-i-n)
structure
PSCs
no
loss
after
550-hour
operational
tests
60°C.
mini-modules
showed
certified
PCEs
19.3
19.2%,
aperture
areas
18.1
50.0
square
centimeters,
respectively.
Science,
Journal Year:
2022,
Volume and Issue:
376(6588), P. 73 - 77
Published: March 31, 2022
If
perovskite
solar
cells
(PSCs)
with
high
power
conversion
efficiencies
(PCEs)
are
to
be
commercialized,
they
must
achieve
long-term
stability,
which
is
usually
assessed
accelerated
degradation
tests.
One
of
the
persistent
obstacles
for
PSCs
has
been
successfully
passing
damp-heat
test
(85°C
and
85%
relative
humidity),
standard
verifying
stability
commercial
photovoltaic
(PV)
modules.
We
fabricated
damp
heat-stable
by
tailoring
dimensional
fragments
two-dimensional
layers
formed
at
room
temperature
oleylammonium
iodide
molecules;
these
passivate
surface
electron-selective
contact.
The
resulting
inverted
deliver
a
24.3%
PCE
retain
>95%
their
initial
value
after
>1000
hours
conditions,
thereby
meeting
one
critical
industrial
standards
PV
Science,
Journal Year:
2023,
Volume and Issue:
380(6643), P. 404 - 409
Published: April 27, 2023
Controlling
the
perovskite
morphology
and
defects
at
buried
perovskite-substrate
interface
is
challenging
for
inverted
solar
cells.
In
this
work,
we
report
an
amphiphilic
molecular
hole
transporter,
(2-(4-(bis(4-methoxyphenyl)amino)phenyl)-1-cyanovinyl)phosphonic
acid,
that
features
a
multifunctional
cyanovinyl
phosphonic
acid
group
forms
superwetting
underlayer
deposition,
which
enables
high-quality
films
with
minimized
interface.
The
resulting
film
has
photoluminescence
quantum
yield
of
17%
Shockley-Read-Hall
lifetime
nearly
7
microseconds
achieved
certified
power
conversion
efficiency
(PCE)
25.4%
open-circuit
voltage
1.21
volts
fill
factor
84.7%.
addition,
1-square
centimeter
cells
10-square
minimodules
show
PCEs
23.4
22.0%,
respectively.
Encapsulated
modules
exhibited
high
stability
under
both
operational
damp
heat
test
conditions.
Science,
Journal Year:
2024,
Volume and Issue:
384(6692), P. 189 - 193
Published: April 11, 2024
Inverted
(pin)
perovskite
solar
cells
(PSCs)
afford
improved
operating
stability
in
comparison
to
their
nip
counterparts
but
have
lagged
power
conversion
efficiency
(PCE).
The
energetic
losses
responsible
for
this
PCE
deficit
pin
PSCs
occur
primarily
at
the
interfaces
between
and
charge-transport
layers.
Additive
surface
treatments
that
use
passivating
ligands
usually
bind
a
single
active
binding
site:
This
dense
packing
of
electrically
resistive
passivants
perpendicular
may
limit
fill
factor
PSCs.
We
identified
two
neighboring
lead(II)
ion
(Pb
Science,
Journal Year:
2023,
Volume and Issue:
379(6633), P. 683 - 690
Published: Feb. 16, 2023
Inserting
an
ultrathin
low-conductivity
interlayer
between
the
absorber
and
transport
layer
has
emerged
as
important
strategy
for
reducing
surface
recombination
in
best
perovskite
solar
cells.
However,
a
challenge
with
this
approach
is
trade-off
open-circuit
voltage
(Voc)
fill
factor
(FF).
Here,
we
overcame
by
introducing
thick
(about
100
nanometers)
insulator
random
nanoscale
openings.
We
performed
drift-diffusion
simulations
cells
porous
contact
(PIC)
realized
it
using
solution
process
controlling
growth
mode
of
alumina
nanoplates.
Leveraging
PIC
approximately
25%
reduced
area,
achieved
efficiency
up
to
25.5%
(certified
steady-state
24.7%)
p-i-n
devices.
The
product
Voc
×
FF
was
87.9%
Shockley-Queisser
limit.
velocity
at
p-type
from
64.2
9.2
centimeters
per
second.
bulk
lifetime
increased
1.2
6.0
microseconds
because
improvements
crystallinity.
improved
wettability
precursor
allowed
us
demonstrate
23.3%
efficient
1-square-centimeter
cell.
here
its
broad
applicability
different
contacts
compositions.
