Advanced Materials,
Год журнала:
2022,
Номер
34(33)
Опубликована: Июнь 24, 2022
The
variation
of
the
vertical
component
distribution
can
significantly
influence
photovoltaic
performance
organic
solar
cells
(OSCs),
mainly
due
to
its
impact
on
exciton
dissociation
and
charge-carrier
transport
recombination.
Herein,
binary
devices
are
fabricated
via
sequential
deposition
(SD)
D18
L8-BO
materials
in
a
two-step
process.
Upon
independently
regulating
spin-coating
speeds
each
layer
deposition,
optimal
SD
device
shows
record
power
conversion
efficiency
(PCE)
19.05%
for
single-junction
OSCs,
much
higher
than
that
corresponding
blend
casting
(BC)
(18.14%).
Impressively,
this
strategy
presents
excellent
universality
boosting
devices,
exemplified
by
several
nonfullerene
acceptor
systems.
mechanism
studies
reveal
with
preferred
components
possesses
high
crystallinity,
efficient
splitting,
low
energy
loss,
balanced
charge
transport,
resulting
all-around
enhancement
performances.
This
work
provides
valuable
approach
high-efficiency
shedding
light
understanding
relationship
between
distribution.
Advanced Materials,
Год журнала:
2022,
Номер
34(31)
Опубликована: Июнь 28, 2022
Abstract
Recent
advances
in
the
power
conversion
efficiency
(PCE)
of
organic
solar
cells
(OSCs)
have
greatly
enhanced
their
commercial
viability.
Considering
technical
standards
(e.g.,
mechanical
robustness)
required
for
wearable
electronics,
which
are
promising
application
platforms
OSCs,
development
fully
stretchable
OSCs
(f‐SOSCs)
should
be
accelerated.
Here,
a
comprehensive
overview
f‐SOSCs,
aimed
to
reliably
operate
under
various
forms
stress,
including
bending
and
multidirectional
stretching,
is
provided.
First,
requirements
terms
tensile
cohesion/adhesion
properties,
summarized
along
with
experimental
methods
evaluate
those
properties.
Second,
essential
studies
make
each
layer
f‐SOSCs
efficient
discussed,
emphasizing
strategies
simultaneously
enhance
photovoltaic
properties
active
layer,
ranging
from
material
design
fabrication
control.
Key
improvements
other
components/layers
(i.e.,
substrate,
electrodes,
interlayers)
also
covered.
Lastly,
considering
that
f‐SOSC
research
its
infancy,
current
challenges
future
prospects
explored.
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.
Abstract
The
power
conversion
efficiencies
(PCEs)
of
organic
solar
cells
(OSCs)
have
improved
considerably
in
recent
years
with
the
development
fused‐ring
electron
acceptors
(FREAs).
Currently,
FREAs‐based
OSCs
achieved
high
PCEs
over
19%
single‐junction
OSCs.
Whereas
relatively
synthetic
complexity
and
low
yield
FREAs
typically
result
production
costs,
hindering
commercial
application
In
contrast,
noncovalently
(NFREAs)
can
compensate
for
shortcomings
facilitate
large‐scale
industrial
by
virtue
simple
structure,
facile
synthesis,
yield,
cost,
reasonable
efficiency.
At
present,
based
on
NFREAs
exceeded
15%
are
expected
to
reach
comparable
efficiency
as
Here,
advances
this
review
provide
insight
into
improving
performance
particular,
paper
focuses
effect
chemical
structures
molecule
conformation,
aggregation,
packing
mode.
Various
molecular
design
strategies,
such
core,
side‐chain,
terminal
group
engineering,
presented.
addition,
some
novel
polymer
all‐polymer
also
introduced.
end,
provides
an
outlook
developing
efficient,
stable,
low‐cost
achieving
applications.
Advanced Materials,
Год журнала:
2023,
Номер
36(17)
Опубликована: Авг. 19, 2023
Abstract
Recently,
many
organic
optoelectronic
materials
(OOMs),
especially
those
used
in
light‐emitting
diodes
(OLEDs),
solar
cells
(OSCs),
and
field‐effect
transistors
(OFETs),
are
explored
for
biomedical
applications
including
imaging
photoexcited
therapies.
In
this
review,
recently
developed
OOMs
fluorescence
imaging,
photoacoustic
photothermal
therapy,
photodynamic
summarized.
Relationships
between
their
molecular
structures,
nanoaggregation
photophysical
mechanisms,
properties
various
discussed.
Mainly
four
kinds
of
covered:
thermally
activated
delayed
OLEDs,
conjugated
small
molecules
polymers
OSCs,
charge‐transfer
complexes
OFETs.
Based
on
the
unique
optical
properties,
excitation
light
wavelength
exciton
dynamics,
they
respectively
exploited
suitable
applications.
This
review
is
intended
to
serve
as
a
bridge
researchers
area
devices
Moreover,
it
provides
guidance
selecting
or
modifying
high‐performance
uses.
Current
challenges
future
perspectives
also
discussed
with
hope
inspiring
further
development
efficient
Advanced Materials,
Год журнала:
2024,
Номер
36(41)
Опубликована: Сен. 1, 2024
This
study
underscores
the
significance
of
precisely
manipulating
morphology
active
layer
in
organic
solar
cells
(OSCs).
By
blending
polymer
donors
D18
with
varying
molecular
weights,
a
multiscale
interpenetrating
fiber
network
structure
within
is
successfully
created.
The
introduction
10%
low
weight
(LW-D18)
into
high
(HW-D18)
produces
MIX-D18,
which
exhibits
an
extended
exciton
diffusion
distance
and
orderly
stacking.
Devices
utilizing
MIX-D18
demonstrate
superior
electron
hole
transport,
improves
dissociation,
enhances
charge
collection
efficiency,
reduces
trap-assisted
recombination
compared
to
other
two
materials.
Through
use
nonfullerene
acceptor
L8-BO,
remarkable
power
conversion
efficiency
(PCE)
20.0%
achieved.
methodology,
integrates
favorable
attributes
polymers,
opens
new
avenue
for
enhancing
performance
OSCs.
Chemical Society Reviews,
Год журнала:
2024,
Номер
53(7), С. 3384 - 3456
Опубликована: Янв. 1, 2024
The
scientific
community
has
witnessed
extensive
developments
and
applications
of
organoboron
compounds
as
synthetic
elements
metal-free
catalysts
for
the
construction
small
molecules,
macromolecules,
functional
materials
over
last
two
decades.
This
review
highlights
achievements
organoboron-mediated
polymerizations
in
past
several
decades
alongside
mechanisms
underlying
these
transformations
from
standpoint
polymerization
mode.
Emphasis
is
placed
on
free
radical
polymerization,
Lewis
pair
ionic
(cationic
anionic)
polyhomologation.
Herein,
alkylborane/O
