Recent
studies
have
almost
focused
on
finding
active
layer
materials
with
extended
π‐conjugation
structures
for
high‐performance
organic
solar
cells
(OSCs).
However,
the
extension
of
conjugate
length,
synthesis
difficulty
and
cost
will
increase.
Achieving
high
efficiency
while
reducing
material
costs
is
a
prerequisite
commercialization
OSCs.
Herein,
two
low‐cost
A‐DA′D‐A‐type
(where
A
D
represent
an
electron‐withdrawing
unit
electron‐donating
unit,
respectively)
nonfullerene
acceptors
(Y25,Y26)
are
synthesized
pentacyclic
fused
backbone
as
DA′D
electron‐deficient
core
5,6‐difluoro‐3‐(dicyandiamethyl)
indigo
end
groups.
Compared
classical
Y
series
heptacyclic
backbone,
although
Y25
Y26
own
reduced
conjugated
they
still
show
moderate
performance
(11.65%
13.34%),
significantly
reduced.
Therefore,
we
provide
new
molecular
design
idea
commercially
efficient
OSCs
acceptors.
We
also
find
that
adding
alkyl
chains
to
β
site
thiophenes
beneficial
obtaining
energetic
disorder,
dominant
stacking,
desirable
morphology,
which
can
facilitate
charge
carrier
transport
prompt
higher
short‐circuit
current
density
(
J
sc
)
well
fill
factor.
Energy & Environmental Science,
Год журнала:
2020,
Номер
14(1), С. 90 - 105
Опубликована: Ноя. 26, 2020
In
this
review,
current
research
status
about
the
machine
learning
use
in
organic
solar
cell
is
reviewed.
We
have
discussed
challenges
anticipating
data
driven
material
design.
Journal of Materials Chemistry A,
Год журнала:
2022,
Номер
10(8), С. 4170 - 4180
Опубликована: Янв. 1, 2022
A
multi-stage
machine
learning
and
molecular
dynamics
simulation-assisted
pipeline
is
introduced
for
the
time-
cost-efficient
design
screening
of
small
molecule
acceptors
organic
solar
cells.
Angewandte Chemie International Edition,
Год журнала:
2021,
Номер
60(35), С. 19241 - 19252
Опубликована: Июнь 3, 2021
Abstract
A
dissymmetric
backbone
and
selenophene
substitution
on
the
central
core
was
used
for
synthesis
of
symmetric
or
A‐DA′D‐A
type
non‐fullerene
small
molecular
acceptors
(NF‐SMAs)
with
different
numbers
selenophene.
From
S‐YSS‐Cl
to
A‐WSSe‐Cl
S‐WSeSe‐Cl
,
a
gradually
red‐shifted
absorption
larger
electron
mobility
crystallinity
in
neat
thin
film
observed.
exhibit
stronger
tighter
intermolecular
π–π
stacking
interactions,
extra
S⋅⋅⋅N
non‐covalent
interactions
from
benzothiadiazole,
better
ordered
3D
interpenetrating
charge‐transfer
networks
comparison
thiophene‐based
.
The
‐based
device
has
PCE
17.51
%,
which
is
highest
value
selenophene‐based
NF‐SMAs
binary
polymer
solar
cells.
combination
precise
replacement
effective
improve
J
sc
FF
without
sacrificing
V
oc
Energy & Environmental Science,
Год журнала:
2021,
Номер
15(1), С. 320 - 333
Опубликована: Окт. 6, 2021
A
synergistic
hetero-dihalogenated
terminals
strategy
was
systematically
employed
for
the
first
time
to
enhance
single-crystal
packing,
boosting
device
performance
of
a
Y-BO-FCl:PM6
with
remarkable
PCE
17.52%.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(10)
Опубликована: Янв. 2, 2023
Side-chain
tailoring
is
a
promising
method
to
optimize
the
performance
of
organic
solar
cells
(OSCs).
However,
asymmetric
alkyl
chain-based
small
molecular
acceptors
(SMAs)
are
still
difficult
afford.
Herein,
we
adopted
novel
n-nonyl/undecyl
substitution
strategy
and
synthesized
two
A-D1
A'D2
-A
double
isomeric
SMAs
with
selenophene-based
central
core
for
OSCs.
Crystallographic
analysis
indicates
that
AYT9Se11-Cl
forms
more
compact
order
intermolecular
packing
compared
AYT11Se9-Cl,
which
contributed
higher
electron
mobility
in
neat
film.
Moreover,
PM6
:
blend
film
shows
better
morphology
appropriate
phase
separation
distinct
face-on
orientation
than
AYT11Se9-Cl.
The
OSCs
obtain
superior
PCE
18.12
%
AYT11Se9-Cl
(17.52
%),
best
efficiency
selenium-incorporated
binary
BHJ
Our
findings
elucidate
chains
precisely
modulates
crystal
enhances
photovoltaic
selenophene-incorporated
SMAs.
Journal of Materials Chemistry A,
Год журнала:
2020,
Номер
8(45), С. 23756 - 23765
Опубликована: Янв. 1, 2020
The
selenium
substitution
strategy
was
applied
to
develop
two
new
A′-DAD-A′-type
small
molecular
acceptors.
resulting
selenium-incorporated
molecules
exhibit
red-shifted
absorption
and
an
enhanced
photon
response,
leading
high
device
efficiencies
of
over
16%.
Cell Reports Physical Science,
Год журнала:
2021,
Номер
2(1), С. 100292 - 100292
Опубликована: Янв. 1, 2021
Organic
photovoltaics
(OPVs)
have
developed
rapidly
since
the
advent
of
fused-ring
electron
acceptors
(FREAs).
FREAs
bearing
bulky
cores,
end-capped
with
electron-withdrawing
groups,
present
advantages
such
as
broad
absorption,
tunable
frontier
orbital
levels,
and
good
thermal
stability.
Recent
breakthroughs
demonstrate
that
FREA-based
OPVs
achieved
more
than
17%
efficiency,
among
which
end
groups
(EGs)
1,1-dicyanomethylene-3-indanone
(IC)
derivatives
are
critical
for
performance
enhancement.
To
date,
50
IC
been
reported
to
construct
high-performance
OPVs.
In
this
review,
we
first
introduce
chemical
structure
synthesis
route
group.
We
discuss
classify
recent
progress
based
on
its
derivatives,
well
impact
morphology.
consider
issues
EGs
face,
including
stability,
isomerism,
EG
redistribution,
finally
proposing
some
future
directions
derivatives.
Energy & Environmental Science,
Год журнала:
2020,
Номер
13(12), С. 4738 - 4793
Опубликована: Янв. 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,
Год журнала:
2020,
Номер
8(9), С. 4856 - 4867
Опубликована: Янв. 1, 2020
The
hybrid
IC
functionalizedBDSe-2(BrCl):PM7-based
PSCs
exhibit
the
impressive
PCE
of
14.54%,
which
is
highest
value
in
IC-functionalized
acceptor-based
binary
organic
solar
cells.
