Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(12)
Опубликована: Янв. 30, 2024
Abstract
The
simultaneous
improvement
of
efficiency
and
stability
organic
solar
cells
(OSCs)
for
commercialization
remains
a
challenging
task.
Herein,
we
designed
asymmetric
acceptors
DT‐C8Cl
DT‐C8BTz
with
functional
haloalkyl
chains,
in
which
the
halogen
atoms
could
induce
noncovalent
interactions
heteroatoms
like
O,
S,
Se,
etc
.,
thus
leading
to
appropriately
manipulated
film
morphology.
Consequently,
binary
devices
based
on
D18:
achieved
champion
power
conversion
(PCE)
19.40
%.
higher
PCE
be
attributed
enhanced
π–π
stacking,
improved
charge
transport,
reduced
recombination
losses.
In
addition,
induced
by
chains
effectively
suppress
unfavorable
morphology
evolutions
thereby
reduce
trap
density
states,
thermal
storage
stability.
Overall,
our
findings
reveal
that
rational
design
is
novel
powerful
strategy
simultaneously
enhancing
OSCs.
Chemical Reviews,
Год журнала:
2022,
Номер
122(18), С. 14180 - 14274
Опубликована: Авг. 5, 2022
Organic
photovoltaics
(OPVs)
have
progressed
steadily
through
three
stages
of
photoactive
materials
development:
(i)
use
poly(3-hexylthiophene)
and
fullerene-based
acceptors
(FAs)
for
optimizing
bulk
heterojunctions;
(ii)
development
new
donors
to
better
match
with
FAs;
(iii)
non-fullerene
(NFAs).
The
application
NFAs
an
A–D–A
configuration
(where
A
=
acceptor
D
donor)
has
enabled
devices
efficient
charge
generation
small
energy
losses
(Eloss
<
0.6
eV),
resulting
in
substantially
higher
power
conversion
efficiencies
(PCEs)
than
FA-based
devices.
discovery
Y6-type
(Y6
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))dimalononitrile)
A–DA′
D–A
further
propelled
the
PCEs
go
beyond
15%
due
smaller
Eloss
values
(∼0.5
eV)
external
quantum
efficiencies.
Subsequently,
Y6-series
single-junction
increased
>19%
may
soon
approach
20%.
This
review
provides
update
recent
progress
OPV
following
aspects:
developments
novel
donors,
understanding
structure–property
relationships
underlying
mechanisms
state-of-the-art
OPVs,
tasks
underpinning
commercialization
such
as
device
stability,
module
development,
potential
applications,
high-throughput
manufacturing.
Finally,
outlook
prospects
section
summarizes
remaining
challenges
technology.
Nature Communications,
Год журнала:
2022,
Номер
13(1)
Опубликована: Май 11, 2022
Enhancing
the
luminescence
property
without
sacrificing
charge
collection
is
one
key
to
high-performance
organic
solar
cells
(OSCs),
while
limited
by
severe
non-radiative
recombination.
Here,
we
demonstrate
efficient
OSCs
with
high
via
design
and
synthesis
of
an
asymmetric
non-fullerene
acceptor,
BO-5Cl.
Blending
BO-5Cl
PM6
donor
leads
a
record-high
electroluminescence
external
quantum
efficiency
0.1%,
which
results
in
low
voltage
loss
0.178
eV
power
conversion
(PCE)
over
15%.
Importantly,
incorporating
as
third
component
into
widely-studied
donor:acceptor
(D:A)
blend,
PM6:BO-4Cl,
allows
device
displaying
certified
PCE
18.2%.
Our
joint
experimental
theoretical
studies
unveil
that
more
diverse
D:A
interfacial
conformations
formed
acceptor
induce
optimized
blend
energetics,
contributes
improved
performance
balancing
generation
Journal of Materials Chemistry A,
Год журнала:
2022,
Номер
10(7), С. 3255 - 3295
Опубликована: Янв. 1, 2022
This
review
presents
the
recent
progress
in
organic
solar
cells
based
on
non-fullerene
acceptors,
with
a
wide
coverage
from
material
synthesis
and
processing
to
interface
engineering,
device
structure,
large-area
fabrication,
stability.
Advanced Functional Materials,
Год журнала:
2022,
Номер
32(35)
Опубликована: Июль 5, 2022
Abstract
Symmetric
conjugated
molecules
can
be
broken
through
suitable
synthetic
strategies
to
construct
novel
asymmetric
molecules,
which
largely
broaden
the
material
library.
In
field
of
organic
solar
cells,
fused‐ring
electron
acceptors
(FREAs)
with
A‐DA'D‐A
type
backbone
structure
have
attracted
much
attention
and
enabled
power
conversion
efficiencies
(PCE)
exceeding
18%.
Among
them,
Y6
is
one
most
classic
FREAs
that
derive
many
symmetric
exhibit
unique
optoelectronic
properties.
Thus,
in
this
review,
focus
on
recent
progress
Y6‐derived
containing
a
dipyrrolobenzothiadiazole
segment,
classified
as
following
three
categories:
end
group,
central
core
side
chain.
The
relationship
molecular
structure,
properties,
device
performance
discussed
detail.
Finally,
future
design
directions
challenges
faced
by
kind
photovoltaic
materials
are
given.
Advanced Materials,
Год журнала:
2023,
Номер
36(16)
Опубликована: Март 3, 2023
Organic
solar
cells
(OSCs)
have
made
dramatic
advancements
during
the
past
decades
owing
to
innovative
material
design
and
device
structure
optimization,
with
power
conversion
efficiencies
surpassing
19%
20%
for
single-junction
tandem
devices,
respectively.
Interface
engineering,
by
modifying
interface
properties
between
different
layers
OSCs,
has
become
a
vital
part
promote
efficiency.
It
is
essential
elucidate
intrinsic
working
mechanism
of
layers,
as
well
related
physical
chemical
processes
that
manipulate
performance
long-term
stability.
In
this
article,
advances
in
engineering
aimed
pursue
high-performance
OSCs
are
reviewed.
The
specific
functions
corresponding
principles
summarized
first.
Then,
anode
layer,
cathode
layer
interconnecting
devices
discussed
separate
categories,
engineering-related
improvements
on
efficiency
stability
analyzed.
Finally,
challenges
prospects
associated
application
emphasis
large-area,
high-performance,
low-cost
manufacturing.
ACS Energy Letters,
Год журнала:
2022,
Номер
7(8), С. 2547 - 2556
Опубликована: Июль 13, 2022
Here,
we
combine
two
donor
polymers
with
a
relatively
short
synthesis
method
and
fabricate
ternary
organic
solar
cells
(OSCs)
high
efficiency
decent
figure-of-merit.
A
series
of
characterizations
show
that
the
optimal
morphology
blend
is
result
coupling
competition
PTQ10
PTVT-T,
where
molecular
packing
phase
separation
motif
broken
but
strong
aggregation
PTVT-T
suppressed,
resulting
in
efficient
charge
transport
collection,
as
well
suppressed
bimolecular
recombination.
Moreover,
previously
reported
solvent-vapor-assisted
casting
method,
taken
an
understanding-guided
optimization,
pushes
system's
to
19.11%.
Furthermore,
PTVT-T-containing
systems
clearly
better
light
soaking
thermal
stability
than
binary
control
system,
benefiting
from
durable
polymer
matrix.
Our
work
provides
useful
approach
for
developing
efficient,
stable,
low-cost
OSCs
based
on
state-of-the-art
donor/acceptor
through
design.
Chemical Reviews,
Год журнала:
2022,
Номер
122(9), С. 8487 - 8593
Опубликована: Март 17, 2022
The
exciton,
an
excited
electron-hole
pair
bound
by
Coulomb
attraction,
plays
a
key
role
in
photophysics
of
organic
molecules
and
drives
practically
important
phenomena
such
as
photoinduced
mechanical
motions
molecule,
photochemical
conversions,
energy
transfer,
generation
free
charge
carriers,
etc.
Its
behavior
extended
π-conjugated
disordered
films
is
very
different
rich
compared
with
exciton
inorganic
semiconductor
crystals.
Due
to
the
high
degree
variability
systems
themselves,
not
only
exerts
changes
on
that
carry
it
but
undergoes
its
own
during
all
phases
lifetime,
is,
birth,
conversion
transport,
decay.
goal
this
review
give
systematic
comprehensive
view
molecular
assemblies
at
evolution
emphasis
rates
typical
for
dynamic
picture
various
consequences
above
dynamics.
To
uncover
variety
behavior,
details
formation,
conversion,
direct
reverse
intersystem
crossing,
radiative
nonradiative
decay
are
considered
systems,
where
these
processes
lead
or
influenced
static
disorder,
distribution
symmetry
breaking,
reactions,
electron
proton
structural
rearrangements,
coupling
vibrations
intermediate
particles,
dissociation
annihilation
well.
