Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 7, 2024
Abstract
A
strategically
designed
donor–acceptor
(D‐A)
block
copolymer
(PM6‐
b
‐PYIT)
is
introduced,
as
a
compatibilizer
to
enhance
the
performance
and
stability
of
inverted
organic
solar
cells
(OSCs)
consisting
bulk
heterojunction
(BHJ)
PM6
L8‐BO.
The
PM6‐
‐PYIT
not
only
significantly
boosts
power
conversion
efficiency
from
16.32%
18.02%,
but
also
further
modulates
molecular
arrangement
improves
compatibility
between
donor
acceptor
materials.
This
stems
structural
similarity
host
materials,
which
facilitates
ordered
stacking
superior
charge‐transporting
properties,
thereby
improving
dielectric
constant
built‐in
voltage
mitigating
excessive
charge
recombination.
More
importantly,
role
in
stabilizing
BHJ
morphology
under
long‐term
aging
conditions
highlighted,
ascribed
improved
miscibility
different
components
composite.
turn
renders
photoactive
layer
more
mechanically
durable,
making
it
suitable
for
stretchable
applications.
Advanced Materials,
Год журнала:
2024,
Номер
36(16)
Опубликована: Янв. 18, 2024
Abstract
Development
of
polymer
donors
with
simple
chemical
structure
and
low
cost
is
great
importance
for
commercial
application
organic
solar
cells
(OSCs).
Here,
side‐chain
random
copolymer
PMQ‐Si605
a
simply
6,7‐difluoro‐3‐methylquinoxaline‐thiophene
backbone
5%
siloxane
decoration
side
chain
synthesized
in
comparison
its
alternating
PTQ11.
Relative
to
molecular
weight
(
M
n
)
28.3
kg
mol
−1
PTQ11,
the
minor
beneficial
achieving
higher
up
51.1
.
In
addition,
can
show
stronger
aggregation
ability
faster
charge
mobility
as
well
more
efficient
exciton
dissociation
active
layer
revealed
by
femtosecond
transient
absorption
spectroscopy.
With
L8‐BO‐F
acceptor,
based
OSCs
display
power
conversion
efficiency
(PCE)
18.08%,
much
than
16.21%
PTQ11
devices.
another
acceptor
BTP‐H2
optimize
photovoltaic
performance
PMQ‐Si605,
further
elevated
PCEs
18.50%
19.15%
be
achieved
binary
ternary
OSCs,
respectively.
Furthermore,
layers
are
suitable
processing
high
humidity
air,
an
important
factor
massive
production
OSCs.
Therefore,
on
promising,
affording
high‐performing
candidate.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(29)
Опубликована: Фев. 8, 2024
Abstract
Intrinsically
stretchable
organic
photovoltaic
cells
(OPVs)
have
garnered
significant
attention
as
crucial
devices
for
powering
next‐generation
wearable
electronics.
Despite
the
rapid
power
conversion
efficiency
gains
in
champion
OPVs,
their
brittle
stretchability
has
failed
to
meet
demands
of
Internet
Things
era,
severely
hindering
further
development
and
practical
applications.
In
this
regard,
a
new
dual‐donor
polymer
blending
strategy
is
demonstrated
constructing
intrinsically
OPVs
by
designing
novel
high‐molecular–weight
conjugated
PM6‐HD.
This
PM6
derivative
featuring
long
alkyl
chains
can
reach
sufficiently
high
molecular
weight
thus
exhibits
fracture
strain
exceeding
90%,
which
≈12
times
higher
than
benchmark
PM6.
Synergistic
optimization
mechanical
properties
performance
polymer:small
molecule
all‐polymer
systems
constructed
from
physical
blends
PM6‐HD
achieved.
Crucially,
resulting
OPV
demonstrates
excellent
stability,
with
record
PCE
80%
50.3%
retention
above
even
after
1000
cycles
cyclic
stretching
at
strains.
work
contributes
advancement
technology
opens
up
possibilities
its
integration
into
electronic
devices.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(22)
Опубликована: Фев. 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.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(18)
Опубликована: Фев. 9, 2024
Abstract
The
progress
of
stretchable
and
wearable
photovoltaics
relies
heavily
on
intrinsically
active
layer
films.
Nevertheless,
there
is
a
paucity
research
clarifying
the
connections
between
their
microstructure,
performance,
adaptation
to
large
strain
in
polymer
electronic
current
study
utilizes
multiple
synchrotron
X‐ray
scattering
methods
collectively
examine
correlations
morphology
stretchability,
as
well
microstructural
evolution
induced
by
stretching
three
sample
cases
highly
ternary
blend
These
blends
contain
over
30%
weight
elastomer,
such
styrene‐ethylene‐butylene‐styrene
block
copolymer,
integrated
into
high‐performance
polymer:nonfullerene
small
molecule
mixture.
Specifically,
real‐time
changes
these
durable
organic
photovoltaic
films
with
elastomers
are
monitored
when
subjected
tensile
through
situ
scattering.
experiments
demonstrate
that
polymeric
can
effectively
lower
degree
crystallinity
deform
crystallites
semiconductor
molecules.
elastomeric
component
aids
stress
dispersion
during
stretching,
thereby
improving
durability
This
provides
new
recommendations
for
advancing
optoelectronic
devices.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(27)
Опубликована: Март 3, 2024
Abstract
Traditional
electronic
devices
inevitably
undergo
degradation
over
time
due
to
deformation,
fatigue,
or
mechanical
damage,
ultimately
resulting
in
device
failure.
To
overcome
this
issue,
researchers
have
pioneered
the
field
of
elastic
electronics,
incorporating
higher
tensile
properties
strain
resistance
into
devices.
Elastic
materials,
especially
self‐healing
elastomers
(SHEs)
are
regarded
as
a
crucial
component
offering
potential
for
restoring
functionality
and
prolonging
lifespan
SHEs
possess
remarkable
ability
tolerate
significant
deformation
utilize
intrinsic
dynamic
chemical
bonds
autonomously
repair
themselves
from
varying
degrees
damage.
The
acquisition
is
key
development
electronics
has
attracted
global
attention.
This
review
offers
comprehensive
overview
current
advancements
electronics.
First,
various
mechanisms
present
elastomeric
material
systems
summarized.
Second,
design
strategies
constructing
based
on
reviewed
detail,
with
particular
emphasis
covalent
non‐covalent
bonds.
Subsequently,
optoelectronic
applications
Finally,
challenges
prospects
that
lie
ahead
order
foster
further
rapidly
growing
outlined.
Science,
Год журнала:
2025,
Номер
387(6732), С. 381 - 387
Опубликована: Янв. 23, 2025
Emerging
wearable
devices
would
benefit
from
integrating
ductile
photovoltaic
light-harvesting
power
sources.
In
this
work,
we
report
a
small-molecule
acceptor
(SMA),
also
known
as
non–fullerene
(NFA),
designed
for
stretchable
organic
solar
cell
(
s
-OSC)
blends
with
large
mechanical
compliance
and
performance.
Blends
of
the
organosilane-functionalized
SMA
BTP-Si4
polymer
donor
PNTB6-Cl
achieved
conversion
efficiency
(PCE)
>16%
ultimate
strain
(ε
u
)
>95%.
Typical
SMAs
suppress
OSC
blend
ductility,
but
addition
enhances
it.
Although
is
less
crystalline
than
other
SMAs,
it
retains
considerable
electron
mobility
highly
miscible
essential
enhancing
ε
.
Thus,
-OSCs
PCE
>
14%
operating
normally
under
various
deformations
(>80%
retention
an
80%
strain)
were
demonstrated.
Analysis
several
SMA-polymer
revealed
general
molecular
structure–miscibility–stretchability
relationships
designing
blends.
Advanced Materials,
Год журнала:
2023,
Номер
36(11)
Опубликована: Дек. 15, 2023
Abstract
The
development
of
intrinsically
stretchable
organic
photovoltaics
(
is
‐OPVs)
with
a
high
efficiency
significance
for
practical
application.
However,
their
efficiencies
lag
far
behind
those
rigid
or
even
flexible
counterparts.
To
address
this
issue,
an
advanced
top‐illuminated
OPV
designed
and
fabricated,
which
has
performance,
through
systematic
optimizations
from
material
to
device.
First,
the
stretchability
active
layer
largely
increased
by
adding
low‐elastic‐modulus
elastomer
styrene‐ethylene‐propylene‐styrene
tri‐block
copolymer
(SEPS).
Second,
conductivity
opaque
electrode
are
enhanced
conductive
polymer/metal
(denoted
as
M‐PH1000@Ag)
composite
strategy.
Third,
optical
electrical
properties
sliver
nanowire
transparent
improved
solvent
vapor
annealing
High‐performance
‐OPVs
successfully
fabricated
structure,
provides
record‐high
16.23%.
Additionally,
incorporating
5–10%
elastomer,
balance
between
achieved.
This
study
valuable
insights
into
device
high‐efficiency
‐OPVs,
low‐cost
production
excellent
stretchability,
indicates
potential
future
applications
OPVs.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(26)
Опубликована: Май 13, 2024
Abstract
High
power
conversion
efficiency
(PCE)
and
mechanical
robustness
are
prerequisites
for
wearable
applications
of
organic
solar
cells
(OSCs).
However,
stretchability
present
active
systems
(i.e.,
crack‐onset
strain
(COS)
<
30%)
should
be
improved.
While
introducing
elastomers
into
is
considered
a
simple
method
improving
stretchability,
the
inclusion
typically
results
in
decrease
PCE
OSC
with
limited
enhancement
due
to
lack
interconnected
electrical
pathways.
In
this
study,
it
developed
efficient
intrinsically
stretchable
(IS)‐OSCs
exceptional
robustness,
by
constructing
co‐continuous
networks
conjugated
polymers
(D18)
(SEBS)
within
layers.
It
demonstrated
that
blend
film
specific
ratio
(40:60
w/w)
D18:SEBS
crucial
forming
structures,
establishing
well‐connected
channels.
Consequently,
D18
0.4
:SEBS
0.6
/L8‐BO
OSCs
achieve
16‐times
higher
(COS
=
126%)
than
based
on
D18/L8‐BO
8%),
while
achieving
4‐times
(12.13%)
compared
SEBS‐rich
layers
(D18
0.2
0.8
/L8‐BO,
3.15%).
Furthermore,
‐based
IS‐OSCs
preserve
86
90%
original
PCEs
at
50%
after
200
stretching/releasing
cycles
15%
strain,
respectively,
demonstrating
highest
among
reported
IS‐OSCs.