Advanced Energy Materials,
Год журнала:
2023,
Номер
13(15)
Опубликована: Март 4, 2023
Abstract
The
realization
of
high‐efficiency
organic
solar
cells
(OSCs)
from
renewable
sources
will
bring
a
real
green
energy
technology.
Benzo[1,2‐b:4,5‐b′]difuran
(BDF)
is
such
building
block
for
photovoltaic
polymers
as
it
can
be
built
furfural,
which
available
trees
and
vegetables.
However,
the
device
performance
BDF‐based
limited
by
aggregation
properties
unfavorable
active
layer
morphology.
Herein,
two
new
wide
bandgap‐conjugated
polymers,
PFCT‐2F
PFCT‐2Cl,
are
developed
copolymerizing
fluorinated
or
chlorinated
BDF
units
with
3‐cyanothiophene
unit
use
electron
donors
in
OSCs.
Benefitting
more
rotatable
nature
side‐chain
thiophene
rings
on
unit,
PFCT‐2Cl
exhibits
adjustable
aggregation,
higher
π–π
stacking
ordering,
appropriate
miscibility
acceptor.
As
result,
high
power
conversion
efficiency
(PCE)
17.2%
offered
nearly
times
than
that
(8.9%).
A
remarkable
PCE
up
to
17.5%
further
achieved
ternary
OSC,
record
polymers.
This
success
proves
critical
role
control
bright
future
constructing
high‐performance
OSCs
bio‐renewable
sources.
Advanced Functional Materials,
Год журнала:
2023,
Номер
33(30)
Опубликована: Апрель 17, 2023
Abstract
Ternary
organic
solar
cells
(OSCs)
represent
an
efficient
and
facile
strategy
to
further
boost
the
device
performance.
However,
selection
criteria
rational
design
of
third
guest
small
molecule
(SM)
material
still
remain
less
understood.
In
this
study,
two
new
SM
donor
isomers,
with
α‐chlorinated
thiophene
(αBTCl)
β‐chlorinated
(βBTCl)
as
side
chains,
are
systematically
designed,
synthesized
incorporated
a
component
in
PM6:L8‐BO
binary
blends.
It
is
noticed
that
introducing
donors
has
extended
absorption
photo‐active
layer,
induced
desired
distribution
vertically
enhanced
crystallinity
reduced
recombination
process,
leading
increased
short‐circuit
current
(
J
SC
)
improved
fill
factor.
Moreover,
due
synergetic
suppressed
nonradiative
loss
preferable
morphology,
ternary
OSCs
feature
improves
open‐circuit
voltage
V
OC
).
Consequently,
impressive
champion
power
conversion
efficiency
18.96%
18.55%
achieved
by
αBTCl‐based
βBTCl‐based
OSCs,
respectively.
Furthermore,
record
17.46%
obtained
330
nm
thickness
OSCs.
This
study
demonstrates
molecular
isomerization
can
be
promising
approach
for
construct
high‐performance
simultaneous
enhancement
all
photovoltaic
parameters.
Angewandte Chemie,
Год журнала:
2022,
Номер
134(37)
Опубликована: Июль 20, 2022
Abstract
Single‐junction
organic
solar
cells
(OSCs)
have
made
significant
progress
in
recent
years.
Innovations
material
design
and
device
optimization
improved
the
power
conversion
efficiencies
to
over
19
%.
In
this
Minireview,
based
on
advances,
we
discuss
molecular
strategies
tune
absorption
spectrum,
energy
level,
intermolecular
aggregation
as
well
highlight
role
of
electrostatic
potential
decreasing
loss.
Then,
introduce
latest
four
types
OSCs
composed
different
donor:acceptor
combinations:
polymer
donor:small‐molecule
acceptor,
all‐polymer,
all‐small‐molecule,
small‐molecule
donor:polymer
acceptor.
Finally,
challenges
practical
applications,
including
cost,
stability,
multi‐function
integration,
are
discussed.
Energy & Environmental Science,
Год журнала:
2022,
Номер
15(11), С. 4789 - 4797
Опубликована: Янв. 1, 2022
PTTzF,
a
linear
conjugated
polymer
donor
featuring
simple
synthesis,
high
device
efficiency,
outstanding
batch
reproducibility,
and
good
universality
with
different
acceptors
is
promising
candidate
for
practical
application
of
organic
solar
cells.
Journal of Materials Chemistry A,
Год журнала:
2022,
Номер
11(1), С. 17 - 30
Опубликована: Ноя. 25, 2022
Herein,
we
summarize
the
recent
progress
of
wide-bandgap
polymer
donors
for
non-fullerene
organic
solar
cells
and
classify
them
into
five
categories.
Also,
perspectives
on
photovoltaics
are
highlighted.
Advanced Energy Materials,
Год журнала:
2023,
Номер
13(15)
Опубликована: Март 4, 2023
Abstract
The
realization
of
high‐efficiency
organic
solar
cells
(OSCs)
from
renewable
sources
will
bring
a
real
green
energy
technology.
Benzo[1,2‐b:4,5‐b′]difuran
(BDF)
is
such
building
block
for
photovoltaic
polymers
as
it
can
be
built
furfural,
which
available
trees
and
vegetables.
However,
the
device
performance
BDF‐based
limited
by
aggregation
properties
unfavorable
active
layer
morphology.
Herein,
two
new
wide
bandgap‐conjugated
polymers,
PFCT‐2F
PFCT‐2Cl,
are
developed
copolymerizing
fluorinated
or
chlorinated
BDF
units
with
3‐cyanothiophene
unit
use
electron
donors
in
OSCs.
Benefitting
more
rotatable
nature
side‐chain
thiophene
rings
on
unit,
PFCT‐2Cl
exhibits
adjustable
aggregation,
higher
π–π
stacking
ordering,
appropriate
miscibility
acceptor.
As
result,
high
power
conversion
efficiency
(PCE)
17.2%
offered
nearly
times
than
that
(8.9%).
A
remarkable
PCE
up
to
17.5%
further
achieved
ternary
OSC,
record
polymers.
This
success
proves
critical
role
control
bright
future
constructing
high‐performance
OSCs
bio‐renewable
sources.
