Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 28, 2024
Abstract
Single‐component
organic
solar
cells
based
on
double
cable
polymers
have
achieved
remarkable
performance,
with
DCPY2
reaching
a
high
efficiency
of
over
13%.
In
this
study,
is
further
optimized
an
13.85%,
maintaining
fill
factor
(FF)
without
compromising
the
short
circuit
current.
Despite
its
intermixed
morphology,
shows
reduced
recombination
rate
compared
to
their
binary
counterpart
(PBDB‐T:Y‐O6).
This
slower
in
attributed
wavefunction
overlap
delocalized
charges,
by
spatially
separating
donor
and
acceptor
units
alkyl
linker,
thereby
restricting
pathways.
Adding
1,8‐diiodooctane
(DIO)
into
facilitating
aggregation,
allowing
free
charges
become
more
delocalized.
The
DIO‐assisted
aggregation
(5%
DIO)
evidenced
increased
pseudo‐pure
domain
size
Y‐O6.
Fine
molecular
control
at
donor/acceptor
interface
double‐cable
polymer
achieves
non‐geminate
under
efficient
charge
generation,
mobility,
carrier
lifetime,
achieving
superior
performance.
Nevertheless,
FF
still
limited
relatively
low
mobility
blend,
suggesting
potential
for
improvement
through
enhanced
higher‐dimensional
packing
material.
Chemical Society Reviews,
Journal Year:
2024,
Volume and Issue:
53(5), P. 2350 - 2387
Published: Jan. 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,
Journal Year:
2023,
Volume and Issue:
62(21)
Published: March 22, 2023
Abstract
Organic
solar
cells
(OSCs)
have
advanced
rapidly
due
to
the
development
of
new
photovoltaic
materials.
However,
long‐term
stability
OSCs
still
poses
a
severe
challenge
for
their
commercial
deployment.
To
address
this
issue,
dimer
acceptor
(
d
T9TBO)
with
flexible
linker
is
developed
incorporation
into
small‐molecule
acceptors
form
molecular
alloy
enhanced
intermolecular
packing
and
suppressed
diffusion
stabilize
active
layer
morphology.
Consequently,
PM6
:
Y6
T9TBO‐based
device
displays
an
improved
power
conversion
efficiency
(PCE)
18.41
%
excellent
thermal
negligible
decay
after
being
aged
at
65
°C
1800
h.
Moreover,
OSC
also
exhibits
mechanical
durability,
maintaining
95
its
initial
PCE
bended
repetitively
1500
cycles.
This
work
provides
simple
effective
way
fine‐tune
stabilized
morphology
overcome
trade‐off
between
stability.
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:
2023,
Volume and Issue:
33(50)
Published: Aug. 21, 2023
Abstract
Organic
solar
cells
(OSCs)
are
a
promising
photovoltaic
technology
that
employs
organic
semiconductor
material
as
the
photoactive
layer,
which
has
unique
advantages
of
light
weight,
large‐area
flexible
fabrication,
low‐cost,
and
semitransparent.
In
recent
years,
performance
OSCs
been
significantly
improved,
highest
power
conversion
efficiency
exceeded
19%.
Despite
tremendous
progress
in
OSCs,
major
bottleneck
realizing
commercialization
is
device
stability.
Therefore,
reviewing
research
on
stability
high‐performance
urgent
necessary.
This
review
discusses
factors
limiting
lifetime,
such
metastable
morphology,
air,
irradiation,
heat,
mechanical
stresses.
Additionally,
this
presents
over
last
5
focusing
enhancing
from
perspective
layers
other
functional
layers,
includes
design
engineering,
solid
additives,
optimizing
buffer
using
stable
electrodes,
encapsulation.
Lastly,
explores
current
challenges
prospects,
including
advanced
machine
learning
techniques
to
assist
experimental
research.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(41)
Published: Aug. 13, 2024
Abstract
High‐performance
organic
solar
cells
often
rely
on
halogen‐containing
solvents,
which
restrict
the
photovoltaic
industry.
Therefore,
it
is
imperative
to
develop
efficient
materials
compatible
with
halogen‐free
solvents.
Herein,
a
series
of
benzo[
]phenazine
(BP)‐core‐based
small‐molecule
acceptors
(SMAs)
achieved
through
an
isomerization
chlorination
strategy
presented,
comprising
unchlorinated
NA1,
10‐chlorine
substituted
NA2,
8‐chlorine
NA3,
and
7‐chlorine
NA4.
Theoretical
simulations
highlight
NA3's
superior
orbit
overlap
length
tight
molecular
packing,
attributed
interactions
between
end
group
BP
unit.
Furthermore,
NA3
demonstrates
dense
3D
network
structures
record
electronic
coupling
104.5
meV.
These
characteristics
empower
ortho‐xylene
(
o
‐XY)
processed
PM6:NA3
device
power
conversion
efficiency
(PCE)
18.94%,
surpassing
PM6:NA1
(15.34%),
PM6:NA2
(7.18%),
PM6:NA4
(16.02%).
Notably,
significantly
lower
PCE
in
excessive
self‐aggregation
NA2
‐XY.
Importantly,
incorporation
D18‐Cl
into
binary
blend
enhances
crystallographic
ordering
increases
exciton
diffusion
donor
phase,
resulting
ternary
19.75%
(certified
as
19.39%).
findings
underscore
significance
incorporating
new
electron‐deficient
units
design
SMAs
tailored
for
environmentally
benign
solvent
processing
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.
Solar RRL,
Journal Year:
2023,
Volume and Issue:
7(20)
Published: Aug. 24, 2023
Organic
solar
cells
(OSCs)
are
a
promising
emerging
photovoltaic
technology
for
energy
conversion.
Recently,
the
power
conversion
efficiencies
of
OSCs
have
been
improved
to
get
closer
their
Schottky–Queisser
limit.
However,
operational
stability
remains
as
major
challenge
ahead
deployment
practical
applications.
The
main
causes
OSC
instability
stem
from
poor
intrinsic
materials,
metastable
morphology
multicomponent
active
layer,
unstable
interfaces,
and
sensitivity
moisture
oxygen.
To
address
these
issues,
it
is
necessary
comprehensive
in‐depth
understanding
fundamentals
develop
an
integrated
solution
overcome
them.
Herein,
state‐of‐art
strategies
used
improve
aspects
material
design,
device
processing,
encapsulation
techniques,
in
hope
delivering
rational
solutions,
summarized.
In
end,
prospects
toward
future
development
efficient
stable
provided.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
63(6)
Published: Dec. 15, 2023
Abstract
Utilizing
intermolecular
hydrogen‐bonding
interactions
stands
for
an
effective
approach
in
advancing
the
efficiency
and
stability
of
small‐molecule
acceptors
(SMAs)
polymer
solar
cells.
Herein,
we
synthesized
three
SMAs
(Qo1,
Qo2,
Qo3)
using
indeno[1,2‐
b
]quinoxalin‐11‐one
(Qox)
as
electron‐deficient
group,
with
incorporation
a
methylation
strategy.
Through
crystallographic
analysis,
it
is
observed
that
two
Qox‐based
methylated
(Qo2
exhibit
multiple
hydrogen
bond‐assisted
3D
network
transport
structures,
contrast
to
2D
structure
gem‐dichlorinated
counterpart
(Qo4).
Notably,
Qo2
exhibits
stronger
compared
Qo3.
Consequently,
PM6
:
device
realizes
highest
power
conversion
(PCE)
18.4
%,
surpassing
efficiencies
devices
based
on
Qo1
(15.8
%),
Qo3
(16.7
Qo4
(2.4
%).
This
remarkable
PCE
can
be
primarily
ascribed
enhanced
donor‐acceptor
miscibility,
more
favorable
medium
structure,
efficient
charge
transfer
collection
behavior.
Moreover,
demonstrates
exceptional
thermal
stability,
retaining
82.8
%
its
initial
after
undergoing
annealing
at
65
°C
250
hours.
Our
research
showcases
precise
methylation,
particularly
targeting
formation
tune
crystal
packing
patterns,
represents
promising
strategy
molecular
design
stable
SMAs.
Small,
Journal Year:
2023,
Volume and Issue:
20(8)
Published: Oct. 12, 2023
Recently,
the
power
conversion
efficiency
(PCE)
of
organic
solar
cells
(OSCs)
has
increased
dramatically,
making
a
big
step
toward
industrial
application
OSCs.
Among
numerous
OSCs,
benzodithiophene
(BDT)-based
OSCs
stand
out
in
achieving
efficient
PCE.
Notably,
single-junction
using
BDT-based
polymers
as
donor
materials
have
completed
PCE
over
19%,
indicating
dramatic
potential
for
preparing
high-performance
large-scale
This
paper
reviews
recent
progress
based
on
BDT
polymer
(PDMs).
The
development
is
concisely
summarized.
Meanwhile,
relationship
between
structure
PDMs
and
performance
further
described
this
review.
Besides,
prospect
single
junction
are
also
discussed.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(12)
Published: Jan. 28, 2024
Abstract
The
ternary
strategy
has
proven
to
be
an
effective
method
for
improving
the
efficiency
of
organic
solar
cells
(OSCs).
However,
designing
and
selecting
third
component
still
pose
challenges.
In
this
study,
issue
is
addressed
by
focusing
on
PBDB‐T:Y18‐F
binary
system
introducing
a
new,
strong
luminescent,
asymmetric
small‐molecule
acceptor
(SMA)
called
L8‐CBIC‐Cl,
which
shares
similar
skeleton
with
Y18‐F.
similarity
in
molecular
framework
facilitates
good
compatibility
between
two
acceptors,
resulting
formation
alloy‐like
phase.
Furthermore,
norbornenyl‐modified
end
group
L8‐CBIC‐Cl
contributes
its
luminescent
properties,
turn
leads
low
non‐radiative
energy
loss
high
open‐circuit
voltage.
Consequently,
PBDB‐T:L8‐CBIC‐Cl:Y18‐F
based
devices
realize
power
conversion
(PCE)
up
17.01%,
higher
than
device
(14.49%).
Importantly,
exhibits
universality
as
guest
other
three
systems
(D18:Y6,
D18:BTP‐eC9‐4F,
D18:L8‐BO).
D18:L8‐BO:L8‐CBIC‐Cl
shows
impressive
19%.
work
demonstrates
that
employing
SMA
PLQY
better
miscibility
host
great
potential
developing
high‐efficiency
OSCs.