Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 25, 2024
Abstract
Organic
solar
cells
(OSCs)
have
emerged
as
promising
candidates
for
renewable
energy
harvesting
due
to
their
lightweight,
flexible,
and
low‐cost
fabrication
potential.
The
efficiency
of
OSCs
is
largely
determined
by
the
choice
solvents,
which
significantly
affect
film
morphology
active
layers,
intermixed
donor‐acceptor
domains,
overall
device
performance.
Beginning
with
an
introduction
importance
solvent
selection,
screening
classification
emphasizing
characteristics
based
on
sustainability,
solubility,
other
additional
considerations
are
explored.
Various
non‐halogenated
highlighting
commonly
used
aromatic
biomass‐derived
water/alcohol‐based
solvents
state‐of‐the‐art
donor
acceptor
materials,
focusing
efficient
materials
such
PM6
D18,
high‐performing
Y‐series
acceptors
also
presented.
Strategies
developing
high‐performance
processed
using
examined,
including
engineering
additive
additive‐free
approaches,
ternary
strategies,
layer‐by‐layer
techniques.
large‐area
devices
addressed,
blade‐coating,
slot‐coating,
processing
Finally,
this
review
outlines
future
research
directions
in
OSCs,
need
continuous
innovation
overcome
existing
limitations
propel
OSC
technology
toward
commercial
viability.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(36)
Опубликована: Июль 18, 2023
Achieving
both
high
open-circuit
voltage
(Voc
)
and
short-circuit
current
density
(Jsc
to
boost
power-conversion
efficiency
(PCE)
is
a
major
challenge
for
organic
solar
cells
(OSCs),
wherein
energy
loss
(Eloss
inefficient
charge
transfer
usually
take
place.
Here,
three
new
Y-series
acceptors
of
mono-asymmetric
asy-YC11
dual-asymmetric
bi-asy-YC9
bi-asy-YC12
are
developed.
They
share
the
same
asymmetric
D1
AD2
(D1
=thieno[3,2-b]thiophene
D2
=selenopheno[3,2-b]thiophene)
fused-core
but
have
different
unidirectional
sidechain
on
side,
allowing
fine-tuned
molecular
properties,
such
as
intermolecular
interaction,
packing
pattern,
crystallinity.
Among
binary
blends,
PM6
:
one
has
better
morphology
with
appropriate
phase
separation
higher
order
than
asy-YC9
bi-asy-YC11
ones.
Therefore,
bi-asy-YC12-based
OSCs
offer
PCE
17.16
%
Voc
Jsc
,
due
reduced
Eloss
efficient
properties.
Inspired
by
strong
NIR-absorption,
introduced
into
L8-BO
construct
ternary
OSCs.
Thanks
broadened
absorption,
optimized
morphology,
furtherly
minimized
achieve
champion
19.23
%,
which
highest
efficiencies
among
these
annealing-free
devices.
Our
developed
engineering
constructing
bi-asymmetric
provides
an
approach
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(45)
Опубликована: Июнь 29, 2023
The
determination
of
molecular
conformations
oligomeric
acceptors
(OAs)
and
their
impact
on
packing
are
crucial
for
understanding
the
photovoltaic
performance
resulting
polymer
solar
cells
(PSCs)
but
have
not
been
well
studied
yet.
Herein,
we
synthesized
two
dimeric
acceptor
materials,
DIBP3F-Se
DIBP3F-S,
which
bridged
segments
Y6-derivatives
by
selenophene
thiophene,
respectively.
Theoretical
simulation
experimental
1D
2D
NMR
spectroscopic
studies
prove
that
both
dimers
exhibit
O-shaped
other
than
S-
or
U-shaped
counter-ones.
Notably,
this
conformation
is
likely
governed
a
distinctive
"conformational
lock"
mechanism,
arising
from
intensified
intramolecular
π-π
interactions
among
terminal
groups
within
dimers.
PSCs
based
deliver
maximum
efficiency
18.09
%,
outperforming
DIBP3F-S-based
(16.11
%)
ranking
highest
efficiencies
OA-based
PSCs.
This
work
demonstrates
facile
method
to
obtain
OA
highlights
potential
high-performance
Advanced Materials,
Год журнала:
2023,
Номер
36(4)
Опубликована: Ноя. 23, 2023
Abstract
Three
nonfused
ring
electron
acceptors
(NFREAs),
namely,
3TT‐C2‐F
,
3TT‐C2‐Cl
and
3TT‐C2
are
purposefully
designed
synthesized
with
the
concept
of
halogenation.
The
incorporation
F
or/and
Cl
atoms
into
molecular
structure
(
)
enhances
π–π
stacking,
improves
mobility,
regulates
nanofiber
morphology
blend
films,
thus
facilitating
exciton
dissociation
charge
transport.
In
particular,
films
based
on
D18:
demonstrate
a
high
an
extended
diffusion
distance,
well‐formed
network.
These
factors
contribute
to
devices
remarkable
power
conversion
efficiency
17.19%,
surpassing
that
(16.17%)
(15.42%).
To
best
knowledge,
this
represents
highest
achieved
in
NFREA‐based
up
now.
results
highlight
potential
halogenation
NFREAs
as
promising
approach
enhance
performance
organic
solar
cells.
Advanced Energy Materials,
Год журнала:
2023,
Номер
13(20)
Опубликована: Апрель 6, 2023
Abstract
Developing
efficient
and
stable
all‐polymer
solar
cells
(all‐PSCs)
has
received
increasing
attention
because
of
their
mechanical
robustness
for
flexible
devices.
Based
on
the
CH‐series
small
molecule
acceptors,
a
new
polymer
acceptor
(PZC24)
is
reported
obtains
decent
power
conversion
efficiency
(PCE)
16.82%
when
blended
with
PM6.
To
further
improve
performance,
an
oligomeric
(CH‐D1),
which
possesses
same
backbone
structure
as
PZC24,
proposed
synthesized
third
component
all‐PSC
system.
The
creative
strategy
improves
crystallinity
molecular
packing,
can
maintain
charge
transport
channels
all‐PSCs
binary
Therefore,
PM6:PZC24:CH‐D1
based
ternary
devices
exhibit
impressive
PCE
17.40%,
among
highest
value
all‐PSCs.
Compared
to
PM6:PZC24,
device
exhibits
enhanced
photosoaking
stability
thermal
stability,
simultaneously.
In
addition,
introduction
does
not
weaken
As
such,
display
excellent
15.35%.
Importantly,
this
shows
universality
in
PM6:PY‐IT
PM6:PY‐V‐γ
improved
PCEs
over
17%.
results
provide
feasible
simultaneously
photovoltaic
herald
bright
future
Advanced Functional Materials,
Год журнала:
2023,
Номер
33(31)
Опубликована: Апрель 17, 2023
Abstract
Peripheral
halogen
regulations
can
endow
non‐fullerene
acceptors
(NFAs)
with
enhanced
features
as
organic
semi‐conductors
and
further
boost
efficient
solar
cells
(OSCs).
Herein,
based
on
a
remarkable
molecular
platform
of
CH14
more
than
six
halogenation
positions,
preferred
NFA
CH23
is
constructed
by
synergetic
swapping
both
central
end
units,
rendering
the
overall
enlarged
dipole
moment,
packing
density
thus
relative
dielectric
constant.
Consequently,
CH23‐based
binary
OSC
reaches
an
excellent
efficiency
18.77%
due
to
its
improved
charge
transfer/transport
dynamics,
much
better
that
17.81%
for
control
CH14.
This
work
demonstrates
great
potential
achieving
state‐of‐the‐art
OSCs
delicately
regulating
formula
these
newly
explored
CH‐series
NFAs.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(18)
Опубликована: Март 9, 2024
The
hole-transporting
material
(HTM),
poly
(3,4-ethylene
dioxythiophene)
poly(styrene
sulfonate)
(PEDOT
:
PSS),
is
the
most
widely
used
in
realization
of
high-efficiency
organic
solar
cells
(OSCs).
However,
stability
PEDOT
PSS-based
OSCs
quite
poor,
arising
from
its
strong
acidity
and
hygroscopicity.
In
addition,
PSS
has
an
absorption
infrared
region
high
highest
occupied
molecular
orbital
(HOMO)
energy
level,
thus
limiting
enhancement
short-circuit
current
density
(J
Coatings,
Год журнала:
2023,
Номер
13(9), С. 1657 - 1657
Опубликована: Сен. 21, 2023
Inorganic
semiconductors
like
silicon
and
germanium
are
the
foundation
of
modern
electronic
devices.
However,
they
have
certain
limitations,
such
as
high
production
costs,
limited
flexibility,
heavy
weight.
Additionally,
depletion
natural
resources
required
for
inorganic
semiconductor
raises
concerns
about
sustainability.
Therefore,
exploration
development
organic
offer
a
promising
solution
to
overcome
these
challenges
pave
way
new
era
electronics.
New
applications
optoelectronic
devices
been
made
possible
by
recent
emergence
semiconductors.
Numerous
innovative
results
on
performance
charge
transport
discovered
with
growth
These
discoveries
opened
up
possibilities
devices,
solar
cells,
light-emitting
diodes,
field-effect
transistors.
The
use
materials
in
has
potential
revolutionise
electronics
industry
providing
low-cost,
flexible,
lightweight
alternatives
traditional
materials.
understanding
carrier
is
crucial
efficient
This
review
offers
thorough
overview
phenomenon
focus
underlying
physical
mechanisms
how
it
affects
device
performance.
processes
generation
recombination
given
special
attention.
Furthermore,
this
provides
valuable
insights
into
fundamental
principles
that
govern
behaviour
carriers
materials,
which
can
inform
design
optimisation
future
Abstract
In
this
study,
a
novel
wide‐bandgap
small
molecule
guest
material,
ITOA,
designed
and
synthesized
for
fabricating
efficient
ternary
organic
solar
cells
(OSCs)
ITOA
complements
the
absorbance
of
PM6:Y6
binary
system,
exhibiting
strong
crystallinity
modest
miscibility.
optimizes
morphology
by
promoting
intensive
molecular
packing,
reducing
domain
size,
establishing
preferred
vertical
phase
distribution.
These
features
contribute
to
improved
well‐balanced
charge
transport,
suppressed
carrier
recombination,
exciton
dissociation.
Consequently,
significantly
enhanced
efficiency
18.62%
device
is
achieved,
accompanied
increased
short‐circuit
current
density
(
J
SC
),
fill
factor
(FF),
open‐circuit
voltage
V
OC
).
Building
on
success,
replacing
Y6
with
BTP‐eC9
leads
an
outstanding
PCE
19.33%
OSCs.
Notably,
introduction
expedites
formation
optimized
morphology,
resulting
in
impressive
18.04%
without
any
postprocessing.
Moreover,
exhibits
operational
stability
under
maximum
power
point
(MPP)
tracking.
This
comprehensive
study
demonstrates
that
rationally
can
optimize
reduce
energy
loss,
streamline
fabrication
process,
essential
achieving
high
OSCs,
paving
way
practical
commercial
applications.