Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(20), P. 14287 - 14296
Published: May 8, 2024
PEDOT:PSS
has
been
widely
used
as
a
hole
extraction
layer
(HEL)
in
organic
solar
cells
(OSCs).
However,
their
acidic
nature
can
potentially
corrode
the
indium
tin
oxide
(ITO)
electrode
over
time,
leading
to
adverse
effects
on
longevity
of
OSCs.
Herein,
we
have
developed
class
biphosphonic
acid
molecules
with
tunable
dipole
moments
for
self-assembled
monolayers
(SAMs),
namely,
3-BPIC(i),
3-BPIC,
and
3-BPIC-F,
which
exhibit
an
increasing
moment
sequence.
Compared
centrosymmetric
axisymmetric
3-BPIC
3-BPIC-F
higher
adsorption
energies
(Eads)
ITO,
shorter
interface
spacing,
more
uniform
coverage
ITO
surface,
better
interfacial
compatibility
active
layer.
Thanks
incorporation
fluorine
atoms,
exhibits
deeper
highest
occupied
molecular
orbital
(HOMO)
energy
level
larger
compared
resulting
enlarged
work
function
(WF)
ITO/3-BPIC-F
substrate.
These
advantages
could
not
only
improve
within
device
but
also
lower
impedance
reduce
nonradiative
recombination
at
interface.
As
result,
OSCs
using
SAM
based
obtained
record
high
efficiency
19.71%,
is
than
that
achieved
from
3-BPIC(i)
(13.54%)
(19.34%).
Importantly,
3-BPIC-F-based
significantly
enhanced
stability
utilizing
HEL.
Our
offers
guidance
future
design
functional
SAMs
realize
even
performance
cells.
Science,
Journal Year:
2023,
Volume and Issue:
382(6668), P. 284 - 289
Published: Oct. 19, 2023
P-i-n
geometry
perovskite
solar
cells
(PSCs)
offer
simplified
fabrication,
greater
amenability
to
charge
extraction
layers,
and
low-temperature
processing
over
n-i-p
counterparts.
Self-assembled
monolayers
(SAMs)
can
enhance
the
performance
of
p-i-n
PSCs
but
ultrathin
SAMs
be
thermally
unstable.
We
report
a
robust
hole-selective
layer
comprised
nickel
oxide
(NiOx)
nanoparticle
film
with
surface-anchored
(4-(3,11-dimethoxy-7H-dibenzo[c,g]carbazol-7-yl)butyl)phosphonic
acid
(MeO-4PADBC)
SAM
that
improve
stabilize
NiOx/perovskite
interface.
The
energetic
alignment
favorable
contact
binding
between
NiOx/MeO-4PADBC
reduced
voltage
deficit
various
compositions
led
strong
interface
toughening
effects
under
thermal
stress.
resulting
1.53-electron-volt
devices
achieved
25.6%
certified
power
conversion
efficiency
maintained
>90%
their
initial
after
continuously
operating
at
65
degrees
Celsius
for
1200
hours
1-sun
illumination.
Science,
Journal Year:
2023,
Volume and Issue:
382(6672), P. 810 - 815
Published: Nov. 16, 2023
Compared
with
the
n-i-p
structure,
inverted
(p-i-n)
perovskite
solar
cells
(PSCs)
promise
increased
operating
stability,
but
these
photovoltaic
often
exhibit
lower
power
conversion
efficiencies
(PCEs)
because
of
nonradiative
recombination
losses,
particularly
at
perovskite/C60
interface.
We
passivated
surface
defects
and
enabled
reflection
minority
carriers
from
interface
into
bulk
using
two
types
functional
molecules.
used
sulfur-modified
methylthio
molecules
to
passivate
suppress
through
strong
coordination
hydrogen
bonding,
along
diammonium
repel
reduce
contact-induced
achieved
field-effect
passivation.
This
approach
led
a
fivefold
longer
carrier
lifetime
one-third
photoluminescence
quantum
yield
loss
certified
quasi-steady-state
PCE
25.1%
for
PSCs
stable
operation
65°C
>2000
hours
in
ambient
air.
also
fabricated
monolithic
all-perovskite
tandem
28.1%
PCE.
Chemical Society Reviews,
Journal Year:
2024,
Volume and Issue:
53(5), P. 2350 - 2387
Published: Jan. 1, 2024
Organic
solar
cells
(OSCs)
have
attracted
a
great
deal
of
attention
in
the
field
clean
energy
due
to
their
advantages
transparency,
flexibility,
low
cost
and
light
weight.
Introducing
them
market
enables
seamless
integration
into
buildings
windows,
while
also
supporting
wearable,
portable
electronics
internet-of-things
(IoT)
devices.
With
development
photovoltaic
materials
optimization
fabrication
technology,
power
conversion
efficiencies
(PCEs)
OSCs
rapidly
improved
now
exceed
20%.
However,
there
is
significant
lack
focus
on
material
stability
device
lifetime,
causing
severe
hindrance
commercial
applications.
In
this
review,
we
carefully
review
important
strategies
employed
improve
over
past
three
years
from
perspectives
design
engineering.
Furthermore,
analyze
discuss
current
progress
terms
air,
light,
thermal
mechanical
stability.
Finally,
propose
future
research
directions
overcome
challenges
achieving
highly
stable
OSCs.
We
expect
that
will
contribute
solving
problem
OSCs,
eventually
paving
way
for
applications
near
future.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(8)
Published: Jan. 2, 2024
Abstract
The
efficiency
loss
caused
by
area
scaling
is
one
of
the
key
factors
hindering
industrial
development
perovskite
solar
cells.
energy
and
contact
issues
in
buried
interface
are
main
reasons.
Here,
a
new
self‐assembled
monolayer
(SAM),
Ph‐4PACz,
with
large
dipole
moment
(2.32
D)
obtained
.
It
found
that
Ph‐4PACz
high
polarity
can
improve
band
alignment
minimize
,
resulting
an
open‐circuit
voltage
(
V
oc
)
as
1.2
for
1.55
eV
perovskite.
However,
when
applied
to
large‐area
devices,
fill
factor
(FF)
still
suffered
from
significant
attenuation.
Therefore,
alumina
nanoparticles
(Al
2
O
3
‐NPs)
introduced
between
rough
FTO
substrate
further
flatness
conformal
film
almost
no
voids
interface,
thus
promoting
low
exciton
binding
energy,
fast
hot‐carrier
extraction
non‐radiative
recombination.
final
devices
achieved
small‐area
power
conversion
(PCE)
25.60%
(1
cm
PCE
24.61%
(certified
at
24.48%),
which
represents
highest
single
device
≥
1
area.
Additionally,
mini‐modules
stability
testing
also
carried
out
demonstrate
feasibility
commercialization.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(37)
Published: March 1, 2024
Abstract
Perovskite
solar
cells
(PSCs)
have
attracted
widespread
research
and
commercialization
attention
because
of
their
high
power
conversion
efficiency
(PCE)
low
fabrication
cost.
The
long‐term
stability
PSCs
should
satisfy
industrial
requirements
for
photovoltaic
devices.
Inverted
with
a
p‐i‐n
architecture
exhibit
considerable
advantages
excellent
competitive
efficiency.
continuously
broken‐through
PCE
inverted
shows
huge
application
potential.
This
review
summarizes
the
developments
outlines
characteristics
including
charge
transport
layers
(CTLs),
perovskite
compositions,
interfacial
regulation
strategies.
latest
effective
CTLs,
modification,
promotion
strategies
especially
under
light,
thermal,
bias
conditions
are
emphatically
analyzed.
Furthermore,
applications
structure
in
high‐efficiency
stable
tandem,
flexible
devices,
modules
main
obstacles
systematically
introduced.
Finally,
remaining
challenges
faced
by
devices
discussed,
several
directions
advancing
proposed
according
to
development
status
industrialization
requirements.