Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(20)
Published: March 8, 2024
Abstract
In
a
methylammonium‐free
(MA‐free)
composition,
the
uncontrollable
crystallization
process
between
Cs
and
formamidine
(FA)
currently
hinders
its
efficiency
enhancement,
especially
in
inverted
perovskite
solar
cells
(PSCs).
Here,
dual‐interface
modification
of
films
is
proposed
by
simultaneously
introducing
additives
surface
passivators.
particular,
(aminomethyl)phosphonic
acid
(AMP)
introduced
into
precursor
solution
to
balance
inducing
preferential
FA
through
specific
formation
strong
hydrogen
bonds
with
FA.
addition,
AMP
spontaneously
sinks
anchors
buried
interface
fill
voids
self‐assembled
monolayer
(SAM)
via
covalent
formed
─PO
3
H
2
FTO.
Subsequently,
sequential
2‐(3‐fluorophenyl)ethylamine
iodide
(mF‐PEAI)
piperazine
diiodide
(PDI),
uniform
potential
achieved
recombination
losses
at
are
minimized.
Notably,
dual‐interface‐modified
MA‐free
PSCs
achieve
state‐of‐the‐art
power
conversion
(PCE)
25.35%
(certified:
24.87%)
satisfactory
V
oc
1.17
based
on
bandgap
1.52
eV.
Importantly,
unencapsulated
devices
maintain
92.8%
91.7%
initial
after
1000
h
maximum
output
(MPP)
tracking
>800
heating
85
°C,
respectively,
confirming
excellent
operational
thermal
stability.
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.
Chemical Reviews,
Journal Year:
2024,
Volume and Issue:
124(5), P. 2138 - 2204
Published: Feb. 29, 2024
Interfacial
engineering
has
long
been
a
vital
means
of
improving
thin-film
device
performance,
especially
for
organic
electronics,
perovskites,
and
hybrid
devices.
It
greatly
facilitates
the
fabrication
performance
solution-processed
devices,
including
field
effect
transistors
(OFETs),
solar
cells
(OSCs),
perovskite
(PVSCs),
light-emitting
diodes
(OLEDs).
However,
due
to
limitation
traditional
interfacial
materials,
further
progress
these
devices
is
hampered
particularly
in
terms
stability,
flexibility,
sensitivity.
The
deadlock
gradually
broken
through
development
self-assembled
monolayers
(SAMs),
which
possess
distinct
benefits
transparency,
diversity,
sensitivity,
selectivity,
surface
passivation
ability.
In
this
review,
we
first
showed
evolution
SAMs,
elucidating
their
working
mechanisms
structure–property
relationships
by
assessing
wide
range
SAM
materials
reported
date.
A
comprehensive
comparison
various
growth,
fabrication,
characterization
methods
was
presented
help
readers
interested
applying
works.
Moreover,
recent
design
applications
mainstream
electronic
OFETs,
OSCs,
PVSCs
OLEDs,
summarized.
Finally,
an
outlook
prospects
section
summarizes
major
challenges
SAMs
used
Science,
Journal Year:
2024,
Volume and Issue:
383(6688), P. 1236 - 1240
Published: March 14, 2024
Power
conversion
efficiencies
(PCEs)
of
inverted
perovskite
solar
cells
(PSCs)
have
been
improved
by
the
use
a
self-assembled
monolayer
(SAM)
hole
transport
layer.
Long-term
stability
PSCs
requires
keeping
SAM
compact
under
layer
during
operation.
We
found
that
strong
polar
solvents
in
precursor
desorb
if
it
is
anchored
on
substrates
hydrogen-bonded,
rather
than
covalently
bonded,
hydroxyl
groups.
used
atomic-layer
deposition
to
create
an
indium
tin
oxide
substrate
with
fully
covalent
hydroxyl-covered
surface
for
anchoring,
as
well
trimethoxysilane
group
exhibited
tridentate
anchoring
substrate.
The
resulting
achieved
PCEs
24.8
(certified
24.6)
and
23.2%
aperture
areas
0.08
1.01
square
centimeters,
respectively.
devices
retained
98.9
98.2%
initial
PCE
after
1000
hours
damp-heat
test
operation
maximum
power
point
tracking
at
85°C
1200
standard
illumination,
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(46)
Published: July 24, 2023
Self-assembled
monolayers
(SAMs)
are
widely
employed
as
effective
hole-selective
layers
(HSLs)
in
inverted
perovskite
solar
cells
(PSCs).
However,
most
SAM
molecules
amphiphilic
nature
and
tend
to
form
micelles
the
commonly
used
alcoholic
processing
solvents.
This
introduces
an
extra
energetic
barrier
disassemble
during
binding
of
on
substrate
surface,
limiting
formation
a
compact
SAM.
To
alleviate
this
problem
for
achieving
optimal
growth,
co-solvent
strategy
carbazole-based
solution
is
developed.
effectively
increases
critical
micelle
concentration
be
above
enhances
reactivity
phosphonic
acid
anchoring
group
allow
densely
packed
SAMs
formed
indium
tin
oxide.
Consequently,
PSCs
derived
from
using
MeO-2PACz,
2PACz,
CbzNaph
HSLs
show
universally
improved
performance,
with
SAM-derived
device
champion
efficiency
24.98%
stability.
Nano-Micro Letters,
Journal Year:
2023,
Volume and Issue:
15(1)
Published: March 21, 2023
Perovskite-based
tandem
solar
cells
have
attracted
increasing
interest
because
of
its
great
potential
to
surpass
the
Shockley-Queisser
limit
set
for
single-junction
cells.
In
architectures,
wide-bandgap
(WBG)
perovskites
act
as
front
absorber
offer
higher
open-circuit
voltage
(V
Materials Futures,
Journal Year:
2023,
Volume and Issue:
2(1), P. 012105 - 012105
Published: Feb. 13, 2023
Abstract
Charge-transporting
layers
(CTLs)
are
important
in
determining
the
performance
and
stability
of
perovskite
solar
cells
(PSCs).
Recently,
there
has
been
considerable
use
self-assembled
monolayers
(SAMs)
as
charge-selective
contacts,
especially
for
hole-selective
SAMs
inverted
PSCs
well
involving
tandem
cells.
The
SAM-based
contact
shows
many
advantages
over
traditional
thin-film
organic/inorganic
CTLs,
including
reduced
cost,
low
optical
electric
loss,
conformal
coating
on
a
rough
substrate,
simple
deposition
large-area
substrate
easy
modulation
energy
levels,
molecular
dipoles
surface
properties.
incorporation
various
resulted
high-efficiency
single
junction
This
topical
review
summarizes
both
challenges
discusses
potential
direction
future
studies.
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.