Angewandte Chemie,
Год журнала:
2024,
Номер
136(9)
Опубликована: Янв. 3, 2024
Abstract
Morphological
control
of
all‐polymer
blends
is
quintessential
yet
challenging
in
fabricating
high‐performance
organic
solar
cells.
Recently,
solid
additives
(SAs)
have
been
approved
to
be
capable
tuning
the
morphology
polymer:
small‐molecule
improving
performance
and
stability
devices.
Herein,
three
perhalogenated
thiophenes,
which
are
3,4‐dibromo‐2,5‐diiodothiophene
(SA‐T1),
2,5‐dibromo‐3,4‐diiodothiophene
(SA‐T2),
2,3‐dibromo‐4,5‐diiodothiophene
(SA‐T3),
were
adopted
as
SAs
optimize
cells
(APSCs).
For
blend
PM6
PY‐IT,
benefitting
from
intermolecular
interactions
between
thiophenes
polymers,
molecular
packing
properties
could
finely
regulated
after
introducing
these
SAs.
In
situ
UV/Vis
measurement
revealed
that
assist
morphological
character
evolution
blend,
leading
their
optimal
morphologies.
Compared
as‐cast
device
:
all
SA‐treated
binary
devices
displayed
enhanced
power
conversion
efficiencies
17.4–18.3
%
with
obviously
elevated
short‐circuit
current
densities
fill
factors.
To
our
knowledge,
PCE
18.3
for
SA‐T1‐treated
ranks
highest
among
APSCs
date.
Meanwhile,
universality
SA‐T1
other
demonstrated
unanimously
improved
performance.
This
work
provide
a
new
pathway
realizing
APSCs.
Chemical Society Reviews,
Год журнала:
2024,
Номер
53(5), С. 2350 - 2387
Опубликована: Янв. 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.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(46)
Опубликована: Июль 12, 2023
Abstract
Organic
solar
cells
(OSCs)
have
attracted
wide
research
attention
in
the
past
decades.
Very
recently,
oligomerized
fused‐ring
electron
acceptors
(OFREAs)
emerged
as
a
promising
alternative
to
small‐molecular/polymeric
acceptor‐based
OSCs
due
their
unique
advantages
such
well‐defined
structures,
batch
reproducibility,
good
film
formation,
low
diffusion
coefficient,
and
excellent
stability.
So
far,
rapid
advances
been
made
development
of
OFREAs
consisting
directly/rigidly/flexibly
linked
oligomers
fused
ones.
In
this
Minireview,
we
systematically
summarized
recent
progress
OFREAs,
including
structural
diversity,
synthesis
approach,
molecular
conformation
packing,
long‐term
Finally,
conclude
with
future
perspectives
on
challenges
be
addressed
potential
directions.
We
believe
that
Minireview
will
encourage
novel
for
OSC
applications.
Advanced Materials,
Год журнала:
2023,
Номер
35(44)
Опубликована: Авг. 22, 2023
High
power
conversion
efficiency
(PCE)
and
mechanical
robustness
are
key
requirements
for
wearable
applications
of
organic
solar
cells
(OSCs).
However,
almost
all
highly
efficient
photoactive
films
comprising
polymer
donors
(PD
)
small
molecule
acceptors
(SMAs)
mechanically
brittle.
In
this
study,
(PCE
=
17.91%)
robust
(crack-onset
strain
[COS]
11.7%)
flexible
OSCs
fabricated
by
incorporating
a
ductile
oligomeric
acceptor
(DOA)
into
the
PD
:SMA
system,
representing
most
to
date.
The
photophysical,
mechanical,
photovoltaic
properties
D18:N3
with
different
DOAs
characterized.
By
introducing
DOA
DOY-C4
longer
alkyl
linker
lower
polymerization,
D18:N3:DOY-C4-based
exhibit
significantly
higher
PCE
(17.91%)
50%
COS
(11.7%)
than
D18:N3-based
device
17.06%,
7.8%).
based
on
D18:N3:DOY-C4
retain
98%
initial
after
2000
consecutive
bending
cycles,
showing
greater
stability
reference
(maintaining
89%
PCE).
After
careful
investigation,
it
is
hypothesized
that
enhancement
in
mainly
due
formation
tie
chains
or
entanglement
ternary
blend
films.
These
results
demonstrate
have
great
potential
achieving
high-performance
OSCs.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
63(1)
Опубликована: Ноя. 21, 2023
A
pyrene-fused
dimerized
electron
acceptor
has
been
successfully
synthesized
and
subsequently
incorporated
as
the
third
component
in
ternary
organic
solar
cells
(OSCs).
Diverging
from
traditional
acceptors
with
a
linear
configuration,
this
novel
displays
distinctive
"butterfly-like"
structure,
comprising
two
Y-acceptors
wings
fused
pyrene-based
backbone.
The
extended
π-conjugated
backbone
electron-donating
nature
of
pyrene
enable
new
to
show
low
solubility,
elevated
glass
transition
temperature
(Tg
),
low-lying
frontier
energy
levels.
Consequently,
seamlessly
integrates
into
OSCs,
enhancing
transporting
properties,
reducing
non-radiative
voltage
loss,
elevating
open-circuit
voltage.
These
merits
have
enabled
OSCs
an
exceptional
efficiency
19.07%,
marked
improvement
compared
17.6%
attained
binary
OSCs.
More
importantly,
high
Tg
exhibited
by
helps
stabilize
morphology
photoactive
layer
thermal-treated
at
70
°C,
retaining
88.7%
over
600
hours.
For
comparison,
experience
decline
73.7%
after
same
duration.
results
indicate
that
design
incorporation
unit
is
promising
strategy
development
for
Accounts of Materials Research,
Год журнала:
2023,
Номер
4(9), С. 772 - 785
Опубликована: Авг. 2, 2023
ConspectusAs
one
of
the
most
important
indicators
for
evaluating
photovoltaic
devices,
power
conversion
efficiencies
(PCEs)
first-class
organic
solar
cells
(OSCs)
have
reached
level
∼20%,
but
they
still
lag
far
behind
that
over
25%
their
inorganic
counterparts.
With
similar
if
not
better
fill
factor
and
short-circuit
current,
this
wide
gap
PCEs
should
be
fundamentally
attributed
to
greatly
larger
nonradiative
energy
losses
in
OSCs,
which
are
usually
above
0.2
eV
OSCs
only
0.03–0.04
high-performance
cells.
Note
stubbornly
severe
recombination
is
associated
with
multiple
characteristics
light-harvesting
molecules,
such
as
intrinsically
large
exciton
binding
energies
small
relative
dielectric
constants,
defective
intermolecular
packing
networks,
or
more
crystal
defects
caused
by
flexibility
molecular
skeletons,
nonideal
nanoscale
film
morphologies,
so
on.
All
factors
require
rational
design
molecules
carried
out
at
single
molecule
also
aggregation
levels
further
dramatic
improvement
PCE
achieved
OSCs.In
Account,
we
will
first
expound
unique
merits
acceptor–donor–acceptor
(A–D–A)
type
materials
frontier
orbital
distribution,
tuning,
packings,
meanwhile
revealing
dominant
role
A–D–A
facilitating
charge
transfer/transport,
suppressing
loss,
improving
performance
eventually.
In
light
conspicuous
superiority
a
convincing
conclusion
can
made
exploration
novel
crucially
shrink
between
Second,
our
recent
studies
really
exciting
platform
(CH-series)
discussed
comprehensively,
involving
various
nonfullerene
acceptors
(NFAs)
molecular,
dimer-like,
polymerized
architectures.
distinctive
feature
CH-series
NFAs
two-dimensional
(2D)
conjugation
extension,
especially
central
units.
Therefore,
favorable
effects
2D
extension
these
on
fundamental
physicochemical
properties,
modes,
blended
parameters,
resulting
fully
discussed.
Abiding
unveiled
rules
NFAs,
highest
approaching
20%
has
been
based
molecules.
The
evolution
path
previous
traditional
PCBM,
ITIC,
Y6,
etc.
could
lesson;
very
likely
offer
great
capable
achieving
record-breaking
along
much
decreased
losses,
considering
structural
modification
possibilities.
Finally,
despite
rapidly
surging
there
several
insurmountable
hurdles
when
attempting
break
through
bottlenecks
existing
OSCs.
propose
some
perspectives
conducted
may
conquer
challenge
too
thus
boost
toward
commercial
applications
further.
Advanced Materials,
Год журнала:
2023,
Номер
36(2)
Опубликована: Сен. 18, 2023
The
development
of
high-efficiency
thickness-insensitive
organic
solar
cells
(OSCs)
is
crucially
important
for
the
mass
production
panels.
However,
increasing
active
layer
thickness
usually
induces
a
substantial
loss
in
efficiency.
Herein,
ternary
strategy
which
an
oligomer
DY-TF
incorporated
into
PM6:L8-BO
system
as
guest
component
adopted
to
break
this
dilemma.
S···F
intramolecular
noncovalent
interactions
backbone
endow
with
high
planarity.
Upon
addition
DY-TF,
crystallinity
blend
effectively
improved,
leading
increased
charge
carrier
mobility,
highly
desirable
fabrication
thick-film
devices.
As
result,
thin-film
PM6:L8-BO:DY-TF-based
device
(110
nm)
shows
power
conversion
efficiency
(PCE)
19.13%.
Impressively,
when
increases
300
nm,
18.23%
(certified
17.8%)
achieved,
representing
highest
reported
nm
thick
OSCs
thus
far.
Additionally,
blade-coated
(300
delivers
promising
PCE
17.38%.
This
work
brings
new
insights
construction
efficient
tolerance,
showing
great
potential
roll-to-roll
printing
large-area
cells.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(38)
Опубликована: Авг. 7, 2023
Abstract
To
exploit
the
potential
of
our
newly
developed
three‐dimensional
(3D)
dimerized
acceptors,
a
series
chlorinated
3D
acceptors
(namely
CH8‐3/4/5)
were
reported
by
precisely
tuning
position
chlorine
(Cl)
atom.
The
introduction
Cl
atom
in
central
unit
affects
molecular
conformation.
Whereas,
replacing
fluorinated
terminal
groups
(CH8‐3)
with
(CH8‐4
and
CH8‐5),
red‐shift
absorption
enhanced
crystallization
are
achieved.
Benefiting
from
these,
all
devices
received
promising
power
conversion
efficiencies
(PCEs)
over
16
%
as
well
decent
thermal/photo‐stabilities.
Among
them,
PM6:CH8‐4
based
device
yielded
best
PCE
17.58
%.
Besides,
merits
multi
alkyl
chains
enable
their
versatile
processability
during
preparation.
Impressive
PCEs
17.27
16.23
could
be
achieved
for
non‐halogen
solvent
processable
prepared
glovebox
ambient,
respectively.
2.88
cm
2
modules
also
obtained
13
via
spin‐coating
blade‐coating
methods,
These
results
among
performance
acceptors.
CH8‐4
on
small‐area
devices,
solvent‐processed
highlights
processing
capability
applications
future.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(8)
Опубликована: Янв. 2, 2024
Abstract
High
power
conversion
efficiency
(PCE),
long‐term
stability,
and
mechanical
robustness
are
prerequisites
for
the
commercial
applications
of
organic
solar
cells
(OSCs).
In
this
study,
a
new
star‐shaped
trimer
acceptor
(TYT‐S)
is
developed
high‐performance
OSCs
with
PCE
19.0%,
high
photo‐stability
(
t
80%
lifetime
=
2600
h
under
1‐sun
illumination),
crack‐onset
strain
(COS)
21.6%
achieved.
The
isotropic
molecular
structure
TYT‐S
affords
efficient
multi‐directional
charge
transport
electron
mobility.
Furthermore,
its
amorphous
prevents
formation
brittle
crystal‐to‐crystal
interfaces,
significantly
enhancing
properties
OSC.
As
result,
TYT‐S‐based
demonstrate
higher
(19.0%)
stretchability
(COS
21.6%)
than
linear‐shaped
(TYT‐L)‐based
(PCE
17.5%
COS
6.4%)
small‐molecule
(MYT)‐based
16.5%
1.3%).
addition,
increased
size
TYT‐S,
relative
to
that
MYT
dimer
(DYT),
suppresses
diffusion
kinetics
molecules,
substantially
improving
photostability
OSCs.
Finally,
effectively
potential
intrinsically
stretchable
(IS)‐OSCs
constructed.
IS‐OSCs
exhibit
device
(strain
at
31%)
14.4%.
Chemical Society Reviews,
Год журнала:
2024,
Номер
53(9), С. 4674 - 4706
Опубликована: Янв. 1, 2024
This
review
summarizes
the
recent
progress,
key
design
principles
and
prospects
of
dimer
multimer
acceptors
for
developing
polymer
solar
cells
(PSCs)
with
high
efficiency
long-term
stability.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(14)
Опубликована: Фев. 9, 2024
Abstract
Achieving
both
high
power
conversion
efficiency
(PCE)
and
device
stability
is
a
major
challenge
for
the
practical
development
of
organic
solar
cells
(OSCs).
Herein,
three
non‐fully
conjugated
dimerized
giant
acceptors
(named
2Y‐sites,
including
wing‐site‐linked
2Y‐wing,
core‐site‐linked
2Y‐core,
end‐site‐linked
2Y‐end)
are
developed.
They
share
similar
monomer
precursors
but
have
different
alkyl‐linked
sites,
offering
fine‐tuned
molecular
absorption,
packing,
glass
transition
temperature,
carrier
mobility.
Among
their
binary
active
layers,
D18/2Y‐wing
has
better
miscibility,
leading
to
optimized
morphology
more
efficient
charge
transfer
compared
D18/2Y‐core
D18/2Y‐end.
Therefore,
D18/2Y‐wing‐based
OSCs
achieve
superior
PCE
17.73
%,
attributed
enhanced
photocurrent
fill
factor.
Furthermore,
exhibit
balance
improved
stability,
distinguishing
them
within
2Y‐sites.
Building
on
success
2Y‐wing
in
systems,
we
extend
its
application
ternary
by
pairing
it
with
near‐infrared
absorbing
D18/BS3TSe‐4F
host.
Thanks
complementary
absorption
300–970
nm
further
morphology,
obtain
higher
19.13
setting
new
benchmark
dimer‐derived
OSCs.
This
approach
site
engineering
constructing
presents
promising
pathway
improve