Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 4, 2025
Abstract
Self‐assembled
monolayers
(SAMs)
have
recently
emerged
as
promising
candidates
for
interfacial
materials
in
organic
photovoltaics
(OPVs).
However,
the
quality
and
integrity
of
SAM
growth
are
significantly
influenced
by
surface
morphology
indium
tin
oxide
(ITO)
substrates,
which
can
compromise
performance
reproducibility
OPVs.
To
achieve
controlled
high‐quality
SAMs
assembly,
this
study
presents
an
effective
strategy
to
eliminate
sensitivity
polycrystalline
ITO
depositing
amorphous
molybdenum
trioxide
(MoO
3
)
thin
layer
on
top.
The
application
MoO
homogenize
roughness
circumvent
issues
related
preferential
grain
orientation
distinct
boundaries
associated
with
ITO.
This
results
a
more
uniform
denser
coverage
compared
direct
bare
Consequently,
resulting
OPVs
based
PM6/BTP‐eC9
system
exhibit
outstanding
power
conversion
efficiency
19.9%
(certified
at
19.3%),
primarily
due
reduced
defects
optimized
active
morphology.
More
importantly,
introduction
between
enhances
long‐term
stability
devices
those
solely
SAMs.
progress
highlights
importance
refining
microstructure
facilitate
favorable
formation
subsequently
construct
high‐performance
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Сен. 1, 2024
Self-assembled
monolayers
(SAMs)
have
become
pivotal
in
achieving
high-performance
perovskite
solar
cells
(PSCs)
and
organic
(OSCs)
by
significantly
minimizing
interfacial
energy
losses.
In
this
study,
we
propose
a
co-adsorb
(CA)
strategy
employing
novel
small
molecule,
2-chloro-5-(trifluoromethyl)isonicotinic
acid
(PyCA-3F),
introducing
at
the
buried
interface
between
2PACz
perovskite/organic
layers.
This
approach
effectively
diminishes
2PACz's
aggregation,
enhancing
surface
smoothness
increasing
work
function
for
modified
SAM
layer,
thereby
providing
flattened
with
favorable
heterointerface
perovskite.
The
resultant
improvements
crystallinity,
minimized
trap
states,
augmented
hole
extraction
transfer
capabilities
propelled
power
conversion
efficiencies
(PCEs)
beyond
25%
PSCs
p-i-n
structure
(certified
24.68%).
OSCs
CA
achieve
remarkable
PCEs
of
19.51%
based
on
PM1:PTQ10:m-BTP-PhC6
photoactive
system.
Notably,
universal
also
been
achieved
other
two
popular
OSC
systems.
After
1000-hour
maximal
point
tracking,
encapsulated
retain
approximately
90%
80%
their
initial
PCEs,
respectively.
introduces
facile,
rational,
effective
method
to
enhance
performance
SAMs,
realizing
efficiency
breakthroughs
both
device
structure,
along
improved
operational
stability.
are
essential
high
Here,
authors
develop
molecule
provide
heterointerface,
devices.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 6, 2025
The
long
exciton
diffusion
length
(LD)
plays
an
important
role
in
promoting
dissociation,
suppressing
charge
recombination,
and
improving
the
transport
process,
thereby
performance
of
organic
solar
cells
(OSCs),
especially
thick-film
OSCs.
However,
limited
LD
hinders
further
improvement
device
as
film
thickness
increases.
Here,
organic-metal
platinum
complex,
namely
TTz-Pt,
is
synthesized
served
a
solid
additive
into
D18-Cl:L8-BO
system.
addition
TTz-Pt
enhanced
crystallinity
blends,
reduced
energy
disorder,
trap
density,
decreased
non-radiative
recombination
binding
energy,
which
conducive
to
prolonging
TTz-Pt-treated
film,
facilitating
dissociation
process
along
with
inhibiting
recombination.
Consequently,
D18:L8-BO:IDIC
(100
nm)
exhibits
champion
power
conversion
efficiency
(PCE)
20.12%
(certified
19.54%),
one
highest
PCEs
reported
for
OSCs
date.
Remarkably,
record-breaking
PCE
18.84%
yielded
active
layer
300
nm.
Furthermore,
superior
universality
This
work
provides
simple
universal
approach
extending
by
introducing
complex
achieve
highly
efficient
Heterojunction
interfaces
play
a
crucial
role
in
charge
carrier
transport,
influencing
the
overall
photovoltaic
performance
of
organic
solar
cells
(OSCs).
Despite
importance,
advancements
interfacial
engineering,
especially
optimizing
microstructure
and
nanomorphology,
have
not
kept
pace
with
research
on
photoactive
layers.
In
study,
strategy
is
explored
to
control
self-assembly
growth
alcohol-soluble
Me-4PACz
(4P)
used
as
hole
transport
layer
(HTL)
OSCs.
The
surface
architecture
modified
inorganic
Co
salts
via
Cu
doping
UV-ozone
treatments,
creating
smooth
top
an
increased
Co3+/Co2+
ratio
hydroxyl
groups.
This
meticulous
design
fine-tuned
assembly
behavior
self-assembled
molecules,
resulting
transition
from
spherical
aggregates
more
uniform
worm-like
morphology.
Additionally,
electrical
optical
properties
are
optimized
passivate
defects
enhance
wettability
solvents,
leading
improved
extraction
reduced
recombination
losses.
Consequently,
OSC
Cu-Co/4P
HTL
exhibited
highest
power
conversion
efficiency
20.42%
(certified
20.20%).
characteristic
universality
stability
make
potential
candidate
for
widespread
applications,
particularly
providing
rationalized
guidance
further
ACS Energy Letters,
Год журнала:
2024,
Номер
9(9), С. 4209 - 4217
Опубликована: Авг. 1, 2024
Improving
the
uniformity
and
density
of
self-assembled
monolayers
(SAMs)
is
crucial
to
elevate
photovoltaic
performance
organic
solar
cells
(OSCs).
Herein,
we
introduced
small
molecules
1-hydroxybenzotriazole
(HOBT)
modulate
distribution
electrical
properties
(4-(7H-dibenzo[c,g]carbazol-7-yl)butyl)phosphonic
acid
(4PADCB)
on
indium
tin
oxide
(ITO)
transparent
electrodes
in
an
innovative
manner.
The
hydroxyl
group
HOBT
interacts
with
phosphate
SAMs,
while
steric
repulsion
exerted
by
backbone
efficiently
regulates
SAMs.
This
led
a
more
uniform
dense
SAMs
ITO.
Furthermore,
HOBT-modified
have
improved
crystallization
vertical
phase
separation
upper
active
layer.
Consequently,
PM6:BTP-eC9
binary
OSCs
based
exhibit
impressive
PCE
19.66%.
Our
work
presents
effective
strategy
for
regulating
SAM
morphology
offers
promising
approach
advancing
OSCs.
Advanced Materials,
Год журнала:
2024,
Номер
36(47)
Опубликована: Окт. 9, 2024
Abstract
The
emerging
non‐fullerene
acceptors
with
low
voltage
losses
have
pushed
the
power
conversion
efficiency
of
organic
solar
cells
(OSCs)
to
≈20%
auxiliary
morphology
optimization.
Thermal
annealing
(TA),
as
most
widely
adopted
post‐treatment
method,
has
been
playing
an
essential
role
in
realizing
potential
various
material
systems.
However,
procedure
TA,
i.e.,
way
that
TA
is
performed,
almost
identical
among
thousands
OSC
papers
since
≈30
years
ago
other
than
changes
temperature
and
time.
Herein,
a
reverse
thermal
(RTA)
technique
developed,
which
can
enhance
dielectric
constant
active
layer
film,
thereby
producing
smaller
Coulomb
capture
radius
(14.93
nm),
meanwhile,
forming
moderate
nano‐scale
phase
aggregation
more
favorable
face‐on
molecular
stacking
orientation.
Thus,
this
method
reduce
decline
open
circuit
conventional
by
achieving
decreased
radiative
(0.334
eV)
non‐radiative
(0.215
recombination
loss.
RTA
PM6:L8‐BO‐X
device
increases
19.91%
(certified
19.42%)
compared
(18.98%).
It
shown
exhibits
superb
universality
4
systems,
revealing
its
dramatic
be
employed
wide
range
OSCs.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
64(1)
Опубликована: Авг. 24, 2024
Disordered
polymer
chain
entanglements
within
all-polymer
blends
limit
the
formation
of
optimal
donor-acceptor
phase
separation.
Therefore,
developing
effective
methods
to
regulate
morphology
evolution
is
crucial
for
achieving
morphological
features
in
organic
solar
cells
(APSCs).
In
this
study,
two
isomers,
4,5-difluorobenzo-c-1,2,5-thiadiazole
(SF-1)
and
5,6-difluorobenzo-c-1,2,5-thiadiazole
(SF-2),
were
designed
as
solid
additives
based
on
widely-used
electron-deficient
benzothiadiazole
unit
nonfullerene
acceptors.
The
incorporation
SF-1
or
SF-2
into
PM6
:
PY-DT
blend
induces
stronger
molecular
packing
via
interaction,
leading
continuous
interpenetrated
networks
with
suitable
phase-separation
vertical
distribution.
Furthermore,
after
treatment
SF-2,
exciton
diffusion
lengths
films
are
extended
over
40
nm,
favoring
charge
transport.
asymmetrical
characterized
by
an
enhanced
dipole
moment,
increases
power
conversion
efficiency
(PCE)
PY-DT-based
device
18.83
%
due
electrostatic
interactions.
Moreover,
a
ternary
strategy
boosts
PCE
SF-2-treated
APSC
19
%.
This
work
not
only
demonstrates
one
best
performances
APSCs
but
also
offers
approach
manipulate
using
rational-designed
additives.
Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 22, 2024
Abstract
The
cathode
interface
layers
(CILs)
play
a
crucial
role
in
enhancing
the
performance
of
organic
solar
cells
(OSCs).
However,
challenges
arise
due
to
high
work
function
CIL
and
inadequate
contact
with
active
layer,
leading
trap
recombination
poor
charge
extraction.
In
this
study,
novel
approach
is
proposed
improve
injection
extraction
CILs
by
incorporating
polyphenols,
trihydroxybenzoic
acid
(TBA).
Focusing
on
PDINN,
its
successfully
reduced
from
4.14
eV
3.80
obtained
collection
efficiency
91.23%
through
TBA
regulation.
These
enhancements
can
be
ascribed
improved
between
layer
CILs,
enhanced
formation
fine
fiber
phase
width
inhibited
recombination.
As
result,
power
conversion
(PCE)
binary
OSCs
comprising
PM6:
BTP‐ec9
exhibits
an
increase
18.2%
19.3%,
placing
it
among
one
highest
PCE
values.
Moreover,
demonstrated
notable
applicability
for
another
as
well
various
systems.
Overall,
research
underscores
importance
regulating
modifying
fully
exploit
their
potential
devices,
while
laying
groundwork
optimizing
stability.
Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 12, 2025
Abstract
Compared
to
conventional
organic
solar
cells
(OSCs)
with
acidic
PEDOT:PSS
as
the
hole
transport
layer
(HTL),
inverted
OSCs
(i‐OSCs)
zinc
oxide
(ZnO)
electron
(ETL)
display
significant
advantages
in
terms
of
high
stability.
However,
an
obvious
limitation
i‐OSCs
is
that
sol‐gel
processed
ZnO
layers
possess
detrimental
defects
at
interface,
which
hinders
improvement
its
photovoltaic
performance.
To
address
this
problem,
a
natural,
and
green
dextran
(Dex)
used
efficient
interfacial
passivator
modify
layer,
thereby
achieving
enhanced
device
performance
i‐OSCs.
The
introduction
Dex
efficiently
suppresses
recombination
loss,
resulting
higher
power
conversion
efficiencies
(PCEs).
Interestingly,
Dex‐passivated
exhibits
broad
applications
ETL
for
different
types
i‐OSCs,
including
fullerene,
non‐fullerene,
all‐polymer
OSCs,
D18:Y6
system
gives
highest
PCE
18.32%.
This
one
values
reported
binary
Moreover,
application
significantly
improves
stability,
T
80
lifetimes
based
on
PM6:Y6,
D18:Y6,
PM6:PY‐IT
exceed
1500
h.
These
results
imply
excellent
ZnO‐based
high‐efficiency
stable
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
17(9), С. 14269 - 14277
Опубликована: Фев. 24, 2025
Inverted
perovskite
solar
cells
(PSCs)
have
achieved
great
development,
contributed
by
the
advance
of
self-assembled
monolayer
(SAM)
hole-transporting
layers
(HTLs)
due
to
their
distinctive
molecular
designability.
However,
SAM
HTLs
still
present
challenges
achieving
a
compact
and
ordered
surface,
resulting
in
vacancies
defects
at
interface
as
well
adversely
affecting
growth
perovskites.
In
this
work,
we
propose
micromolecule
postdeposition
process
design
HTL
form
high-quality
perovskites
achieve
highly
efficient
inverted
PSCs.
We
introduce
etidronic
acid
(EA)
fill
reduce
improve
growing
The
EA
can
anchor
substrate
through
P-OH
anchors,
occupying
left
MeO-4PACz,
simultaneously
create
interaction
with
P═O
C-OH
functional
groups.
effectively
fills
reduces
interface,
passivates
perovskites,
facilitates
carrier
transport.
Consequently,
champion
PCE
24.42%
is
for
target
PSCs,
which
much
higher
than
efficiency
(20.08%)
control.
This
research
provides
guided
widely
applicable
strategy
development
further
advances
performance