Journal of Materials Chemistry A,
Journal Year:
2019,
Volume and Issue:
7(7), P. 3072 - 3082
Published: Jan. 1, 2019
This
paper
reports
side-chain-engineered
polymer
donors
and
a
small-molecule
acceptor
that
are
capable
of
simultaneous
charge
energy
transfer
as
the
active
layer
for
organic
photovoltaics.
Energy & Environmental Science,
Journal Year:
2020,
Volume and Issue:
13(12), P. 4738 - 4793
Published: Jan. 1, 2020
This
review
showcases
the
development
of
heteroacene-based
molecular
materials
and
their
role
in
high
performance
binary,
ternary,
tandem
semitransparent
organic
solar
cells.
Journal of Materials Chemistry A,
Journal Year:
2020,
Volume and Issue:
9(2), P. 1080 - 1088
Published: Nov. 25, 2020
The
intrinsic
chemical
and
photochemical
stability
of
A–D–A-type
non-fullerene
acceptors
can
be
effectively
improved
by
introducing
ring-locked
carbon–carbon
double
bonds
between
D–A
conjugation.
Chemistry of Materials,
Journal Year:
2019,
Volume and Issue:
31(5), P. 1752 - 1760
Published: Feb. 4, 2019
Generally,
the
electron-withdrawing
substitution
on
end-capping
group
of
acceptor–donor–acceptor
type
small-molecule
acceptor
(SMA)
narrows
optical
bandgap,
and
electron-donating
lifts
lowest
unoccupied
molecular
orbital
(LUMO)
energy
level
nonfullerene
SMA,
which
increase
short-circuit
current
density
(JSC)
open
circuit
voltage
(VOC)
organic
solar
cells
(OSCs),
respectively;
however,
their
synergistic
effect
properties
SMA
has
remained
elusive.
Here,
we
first
report
a
new
(EG),
namely,
5-fluoro-6-methyl-3-dicycanovinylindan-1-one
(CFDCI),
that
concurrently
possesses
an
fluorine
substitute
methyl
group.
A
prototype
(namely,
ITCF)
based
CFDCI
its
two
control
counterparts
were
prepared
to
fully
understand
structure–property
relationship
EG
exerts
resultant
SMA.
The
ITCF
demonstrated
moderately
crystalline
morphology
in
pristine
film
more
balanced
charge
transport
as
well
reduced
amount
bimolecular
recombination
blend
comparison
with
counterparts.
ITCF-based
devices
high
power
conversion
efficiency
(PCE)
13.25%
outstanding
fill
factor
(FF)
78.8%,
significantly
outperformed
Our
study
provides
important
strategy
judiciously
tune
SMAs
for
improving
performance
OSCs.
ACS Applied Energy Materials,
Journal Year:
2021,
Volume and Issue:
4(11), P. 11899 - 11981
Published: Oct. 26, 2021
Organic
solar
cells
are
on
the
dawn
of
next
era.
The
change
focus
toward
non-fullerene
acceptors
has
introduced
an
enormous
amount
organic
n-type
materials
and
drastically
increased
power
conversion
efficiencies
photovoltaics,
now
exceeding
18%,
a
value
that
was
believed
to
be
unreachable
some
years
ago.
In
this
Review,
we
summarize
recent
progress
in
design
ladder-type
fused-ring
2018–2020.
We
thereby
concentrate
single
layer
heterojunction
omit
tandem
architectures
as
well
ternary
cells.
By
analyzing
more
than
700
structures,
highlight
basic
principles
their
influence
optical
electrical
structure
acceptor
molecules
review
photovoltaic
performance
obtained
so
far.
This
Review
should
give
extensive
overview
plenitude
motifs
but
will
also
help
understand
which
structures
strategies
beneficial
for
designing
highly
efficient
Small,
Journal Year:
2023,
Volume and Issue:
19(18)
Published: Jan. 30, 2023
Halogenation
of
organic
semiconductors
is
an
efficient
strategy
for
improving
the
performance
solar
cells
(OSCs),
while
introduction
halogens
usually
involves
complex
synthetic
process
and
serious
environment
pollution
problems.
Herein,
three
halogen-free
ternary
copolymer
donors
(PCNx,
x
=
3,
4,
5)
based
on
electron-withdrawing
dicyanobenzotriazole
are
reported.
When
blended
with
Y6,
PCN3
strong
interchain
interactions
results
in
appropriate
crystallinity
thermodynamic
miscibility
blend
film.
Grazing-incidence
wide-angle
X-ray
scattering
measurements
indicate
that
has
more
ordered
arrangement
stronger
π-π
stacking
than
previous
PCN2.
Fourier-transform
photocurrent
spectroscopy
external
quantum
efficiency
electroluminescence
show
PCN3-based
OSCs
have
lower
energy
loss
PCN2,
which
leads
to
their
higher
open-circuit
voltage
(0.873
V).
The
device
reaches
power
conversion
(PCE)
15.33%
binary
OSCs,
one
highest
values
donor
polymers.
PCE
17.80%
18.10%
obtained
PM6:PCN3:Y6
PM6:PCN3:BTP-eC9
devices,
much
those
PM6:Y6
(16.31%)
PM6:BTP-eC9
(17.33%)
devices.
Additionally,
this
exhibit
superior
stability
compared
host
system.
This
work
gives
a
promising
path
polymers
achieve
low
high
PCE.
Advanced Functional Materials,
Journal Year:
2021,
Volume and Issue:
31(41)
Published: July 19, 2021
Abstract
Introducing
a
third
component
into
organic
bulk
heterojunction
solar
cells
has
become
an
effective
strategy
to
improve
photovoltaic
performance.
Meanwhile,
the
rapid
development
of
non‐fullerene
acceptors
(NFAs)
pushed
power
conversion
efficiency
(PCE)
(OSCs)
higher
standard.
Herein,
series
fullerene‐free
ternary
are
fabricated
based
on
wide
bandgap
acceptor,
IDTT‐M,
together
with
donor
polymer
PM6
and
narrow
NFA
Y6.
Insights
from
morphological
electronic
characterizations
reveal
that
IDTT‐M
been
incorporated
Y6
domains
without
disrupting
its
molecular
packing
sacrificing
electron
mobility
work
synergistically
regulate
pattern
PM6,
leading
enhanced
hole
suppressed
recombination.
further
functions
as
energy‐level
mediator
increases
open‐circuit
voltage
(
V
OC
)
in
devices.
In
addition,
efficient
Förster
resonance
energy
transfer
(FRET)
between
provides
non‐radiative
pathway
for
facilitating
exciton
dissociation
charge
collection.
As
result,
optimized
device
features
significantly
improved
PCE
up
16.63%
simultaneously
short‐circuit
current
J
SC
),
,
fill
factor
(FF).
