Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 7, 2024
The
solution
aggregation
structure
of
conjugated
polymers
is
crucial
to
the
morphology
and
resultant
optoelectronic
properties
organic
electronics
considerable
interest
in
field.
Precise
characterizations
structures
photovoltaic
(OPV)
blends
their
temperature-dependent
variations
remain
challenging.
In
this
work,
three
representative
high-efficiency
OPV
using
small-angle
X-ray/neutron
scattering
are
systematically
probed.
Three
cases
processing
resiliency
elucidated
state-of-the-art
blends.
exceptional
PBQx-TF
can
be
attributed
minimal
changes
multiscale
at
elevated
temperatures.
Importantly,
a
new
parameter,
percentage
acceptors
distributed
within
polymer
aggregates
(Ф),
for
first
time
blend
solution,
establishes
direct
correlation
between
Ф
performance
quantified.
device
well
correlated
with
Kuhn
length
cylinder
related
L
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
63(1)
Published: Nov. 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
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(19)
Published: Jan. 14, 2024
Abstract
As
simple
and
versatile
tools,
additives
have
been
widely
used
to
refine
active
layer
morphology
played
a
crucial
role
in
boosting
the
power
conversion
efficiency
(PCE)
of
organic
solar
cells
(OSCs).
Herein,
three
novel
solvent
named
Th‐FSi,
Th‐ClSi,
Th‐BrSi
with
same
backbone
2,5‐bis(trimethylsilyl)thiophene
are
designed
synthesized
by
substituting
different
halogens
fluorine,
chlorine,
bromine,
respectively.
Notably,
Th‐ClSi
exhibits
more
significant
dipole
moment
engages
non‐covalent
interactions
small‐molecule
acceptor
(SMA)
L8‐BO,
which
slight
adjustments
intermolecular
interaction,
crystallinity,
molecular
packing
PM6:L8‐BO
layer.
Consequently,
OSCs
incorporating
outperform
their
Th‐FSi
counterparts
photo‐capturing,
reduced
energy
loss,
superior
exciton
dissociation,
charge
transfer
properties,
out‐coming
yields
an
enhanced
PCE
18.29%.
Moreover,
integrating
near‐infrared
absorbing
SMA
(BTP‐eC9)
guest
into
matrix,
absorption
spectrum
span
880–930
nm,
resultant
ternary
achieve
commendable
19.17%,
ranking
among
highest
efficiencies
reported
date
is
expanded.
These
findings
underscore
promise
halogenated
thiophene‐based
as
potent
avenue
for
morphological
fine‐tuning
consequent
enhancement
OSCs.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(37)
Published: May 30, 2024
Stretchable
organic
photovoltaics
(OPVs)
have
attracted
significant
attention
as
promising
power
sources
for
wearable
electronic
systems
owing
to
their
superior
robustness
under
repetitive
tensile
strains
and
good
compatibility.
However,
reconciling
a
high
power-conversion
efficiency
reasonable
flexibility
is
tremendous
challenge.
In
addition,
the
development
of
stretchable
OPVs
must
be
accelerated
satisfy
increasing
requirements
niche
markets
mechanical
robustness.
OPV
devices
can
classified
either
structurally
or
intrinsically
stretchable.
This
work
reviews
recent
advances
in
OPVs,
including
design
mechanically
robust
transparent
electrodes,
photovoltaic
materials,
devices.
Initially,
an
overview
characteristics
research
progress
areas
provided.
Subsequently,
into
flexible
electrodes
that
directly
affect
performances
summarized
analyzed.
Overall,
this
review
aims
provide
in-depth
understanding
intrinsic
properties
highly
efficient
deformable
active
while
also
emphasizing
advanced
strategies
simultaneously
improving
performance
layer,
material
design,
multi-component
settings,
structural
optimization.
Energy & Environmental Science,
Journal Year:
2024,
Volume and Issue:
17(12), P. 4216 - 4227
Published: Jan. 1, 2024
Pincer-shaped
non-covalent
bond
interactions
are
introduced
between
a
small-molecule
additive
and
polymer
acceptor,
effectively
improving
the
photovoltaic
performance
mechanical
stability
of
all-polymer
solar
cells.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(22)
Published: March 26, 2024
Abstract
Designing
new
acceptors
is
critical
for
intrinsically
stretchable
organic
solar
cells
(IS‐OSCs)
with
high
efficiency
and
mechanical
robustness.
However,
nearly
all
polymer
exhibit
limited
high‐performance
small
molecular
are
very
brittle.
In
this
regard,
we
select
thienylene‐alkane‐thienylene
(TAT)
as
the
conjugate‐break
linker
synthesize
four
dimerized
by
regulation
of
connecting
sites
halogen
substitutions.
It
found
that
substitutions
considerably
impact
overall
electronic
structures,
aggregation
behaviors,
charge
transport
properties.
Benefiting
from
optimization
structure,
acceptor
exhibits
rational
phase
separation
within
blend
films,
which
significantly
facilitates
exciton
dissociation
while
effectively
suppressing
recombination
processes.
Consequently,
FDY‐m‐TAT‐based
rigid
OSCs
render
highest
power
conversion
(PCE)
18.07
%
among
reported
containing
linker.
Most
importantly,
IS‐OSCs
achieve
PCE
(14.29
%)
remarkable
stretchability
(crack‐onset
strain
[COS]=18.23
%),
surpassing
Y6‐based
counterpart
(PCE=12.80
COS=8.50
%).
To
sum
up,
these
findings
demonstrate
linkers
have
immense
potential
in
developing
highly
efficient
mechanically
robust
OSCs.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(19)
Published: Feb. 7, 2024
Abstract
Single‐component
organic
solar
cells
(SCOSCs)
with
covalently
bonding
donor
and
acceptor
are
becoming
increasingly
attractive
because
of
their
superior
stability
over
traditional
multicomponent
blend
(OSCs).
Nevertheless,
the
efficiency
SCOSCs
is
far
behind
state‐of‐the‐art
OSCs.
Herein,
by
combination
advantages
three‐component
single‐component
devices,
this
work
reports
an
innovative
three‐in‐one
strategy
to
boost
performance
SCOSCs.
In
strategy,
three
independent
components
(PM6,
D18,
PYIT)
linked
together
create
a
new
active
layer
based
on
ternary
conjugated
block
copolymer
(TCBC)
PM6‐D18
‐b‐
PYIT
facile
polymerization.
Precisely
manipulating
component
ratios
in
polymer
chains
able
broaden
light
utilization,
promote
charge
dynamics,
optimize,
stabilize
film
morphology,
contributing
simultaneously
enhanced
Ultimately,
PYIT‐based
device
exhibits
power
conversion
(PCE)
14.89%,
which
highest
reported
Thanks
aggregation
restriction
each
chain
entanglement
system,
SCOSC
displays
significantly
higher
than
corresponding
two‐component
(PM6‐D18:PYIT)
(PM6:D18:PYIT).
These
results
demonstrate
that
promising
for
developing
stability.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(15)
Published: Feb. 7, 2024
Polymer
solar
cells
(PSCs)
rely
on
a
blend
of
small
molecular
acceptors
(SMAs)
with
polymer
donors,
where
thermodynamic
relaxation
SMAs
poses
critical
concerns
operational
stability.
To
tackle
this
issue,
tethered
SMAs,
wherein
multiple
SMA-subunits
are
connected
to
the
aromatic-core
via
flexible
chains,
proposed.
This
design
aims
an
elevated
glass
transition
temperature
(T
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(22)
Published: Feb. 6, 2024
Abstract
Stretchable
organic
solar
cells
(OSCs)
with
high
power
conversion
efficiency
and
good
mechanical
deformation
are
promising
as
sources
for
wearable
electronics.
However,
synergistic
improvement
of
both
photovoltaic
ductility
is
challenging
state‐of‐the‐art
polymer
donor:
non‐fullerene
acceptor
(NFA)‐based
active
layers.
Here,
a
high‐performance
stretchable
OSC
16.54%
crack‐onset
strain
26.38%
by
synergetic
optimization
film
microstructure
sequentially
deposited
ternary
layer
consisting
donor
poly[2,6‐(4,8‐bis(5‐(2‐ethylhexyl‐3‐fluoro)thiophen‐2‐yl)‐benzo[1,2‐b:4,5‐b']dithiophene))‐alt‐5,5'‐(5,8‐bis(4‐(2‐butyloctyl)thiophen‐2‐yl)dithieno[3',2':3,4;2'',3'':5,6]benzo[1,2‐c][1,2,5]thiadiazole)]
(D18),
an
NFA
2,2'‐((2Z,2'Z)‐((12,13‐bis(2‐ethylhexyl)‐3,9‐diundecyl‐12,13‐dihydro‐[1,2,5]thiadiazolo[3,4‐e]thieno[2'',3'':4',5']thieno[2',3':4,5]pyrrolo[3,2‐g]thieno[2',3':4,5]thieno[3,2‐b]indole‐2,10‐diyl)bis(methanylylidene)bis(5,6‐difluoro‐3‐oxo‐2,3‐dihydro‐1H‐indene‐2,1‐diylidene))dimalonitrile)
(Y6),
elastomer
polystyrene‐block‐poly(ethylene‐ran‐butylene)‐block‐polystyrene
(SEBS)
reported.
Adding
low‐content
solvent
additive
para‐xylene
into
main
carbon
disulfide
induces
high‐density
fibers
networks
low
crystallinity
in
bottom
D18
layer,
this
further
suppresses
the
large
phase
separation
between
Y6
SEBS
top
layer.
Moreover,
incorporating
solid
1,3‐dibromo‐5‐chlorobenzene
better
compatibility
can
promote
dispersions
to
form
smaller
ordered
domains
matrix.
Finally,
optimal
shows
significantly
higher
stretchability,
resulting
efficiency‐stretchability
factor
4.36%,
which
among
best
values
OSCs.
National Science Review,
Journal Year:
2025,
Volume and Issue:
12(3)
Published: Jan. 21, 2025
Polymer
solar
cells
(PSCs)
leverage
blend
films
from
polymer
donors
and
small-molecule
acceptors
(SMAs),
offering
promising
opportunities
for
flexible
power
sources.
However,
the
inherent
rigidity
crystalline
nature
of
SMAs
often
embrittle
donor
in
constructed
bulk
heterojunction
structure.
To
address
this
challenge,
we
improved
stretchability
by
designing
synthesizing
a
tethered
giant
tetrameric
acceptor
(GTA)
with
increased
molecular
weight
that
promotes
entanglement
individual
SMA
units.
The
key
to
design
is
using
tetraphenylmethane
as
linking
core
create
three-dimensional
high
C2
symmetry
structure,
which
successfully
regulates
their
aggregation
relaxation
behavior.
With
GTA
acceptor,
its
PM6
exhibit
significantly
stretchability,
nearly
150%
increase
crack
onset
strain
value
compared
PM6:Y6.
Moreover,
PSCs
achieve
an
efficiency
up
18.71%
demonstrate
outstanding
photostability,
maintaining
>90%
initial
conversion
after
operating
over
1000
hours.
Our
findings
specifically
aligning
weights
more
closely
those
counterparts,
can
enhanced
without
compromising
morphological
stability
or
device
efficiency.
The
growing
advancement
of
wearable
technologies
and
sophisticated
sensors
has
driven
the
need
for
environmentally
friendly
reliable
energy
sources
with
robust
mechanical
stability.
Flexible
organic
solar
cells
(OSCs)
have
become
promising
substitutes
traditional
solutions
thanks
to
their
remarkable
flexibility
high
power
conversion
efficiency
(PCE).
These
unique
properties
allow
flexible
OSCs
seamlessly
integrate
diverse
devices
substrates,
making
them
an
excellent
choice
powering
various
electronic
by
efficiently
harvesting
energy.
This
review
summarizes
recent
achievements
in
from
perspective
self-powered
applications.
It
discusses
advancements
materials,
including
substrates
transparent
electrodes,
evaluates
performance
criteria,
compares
PCEs
rigid
counterparts.
Subsequently,
novel
applications
are
explored.
Finally,
a
summary
perspectives
on
current
challenges
obstacles
facing
wearables
provided,
aiming
inspire
further
research
toward
practical
implementations.