Solar RRL,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 20, 2024
In
order
to
attain
high
performance
in
single‐component
organic
solar
cells
(SCOSCs),
it
requires
the
designing
of
light‐harvesting
structures
that
can
absorb
light
across
a
wide
range
from
visible
near‐infrared
(NIR)
wavelengths.
this
investigation,
two
novel
dyad
materials,
denoted
as
SPS‐BF‐Full
and
SPS‐BT‐Full
are
designed
synthesized,
consisting
covalently
linked
benzofuran
(BF)
benzothiophene
(BT)
functionalized
thiophene–diketopyrrolopyrrole
(TDPP)
donor
N‐methyl
fullero[60]pyrrolidine
acceptor,
respectively.
The
incorporation
phenyl
bridge
between
TDPP
enhances
absorption
SPS‐BT‐Full,
resulting
short‐circuit
density
(
J
SC
).
Consequently,
SCOSCs
utilizing
attained
overall
power
conversion
efficiency
(PCE)
6.28
7.35%,
photovoltaic
OSCs
is
mainly
attributed
its
higher
external
quantum
balanced
hole
electron
mobility
μ
e
/
h
=
1.39),
along
with
imporved
charge
carrier
extraction,
revealing
more
effective
transport
comparison
counterparts.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 8, 2024
Given
homomorphic
fluorine
(F),
chlorine
(Cl)
and
bromine
(Br)
atoms
are
featured
with
gradually
enlarged
polarizability/atomic
radius
but
decreased
electronegativity,
the
rational
screen
of
halogen
species
locations
on
small
molecular
acceptors
(SMAs)
is
quite
essential
for
acquiring
desirable
packing
to
boost
efficiency
organic
solar
cells
(OSCs).
Herein,
three
isomeric
SMAs
(CH-F,
CH-C
CH-B)
constructed
by
delicately
rebuilding
peripheral
F,
Cl,
Br
footprints
both
central
end
units.
Such
a
re-permutation
halogens
could
not
only
maintain
structural
symmetry
maximum,
also
acquire
extra
asymmetric
benefits
enhanced
dipole
moment
intramolecular
charge
transfer,
etc.
Moreover,
brominating
enhances
crystallinity
CH-B
without
introducing
undesirable
steric
hindrance
groups,
thus
rendering
better
balance
between
high
crystallization
domain
size
control
in
PM6:CH-B
blend.
Further
benefitting
from
large
dielectric
constant,
exciton
binding
energy,
optimized
great
electron
transfer
integral,
affords
first
class
binary
OSC
19.78
%,
moreover,
highest
18.35
%
far
when
increasing
active
layer
thickness
~300
nm.
Our
successful
screening
provides
valuable
insight
into
further
design
record-breaking
OSCs.
Solar RRL,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 20, 2024
In
order
to
attain
high
performance
in
single‐component
organic
solar
cells
(SCOSCs),
it
requires
the
designing
of
light‐harvesting
structures
that
can
absorb
light
across
a
wide
range
from
visible
near‐infrared
(NIR)
wavelengths.
this
investigation,
two
novel
dyad
materials,
denoted
as
SPS‐BF‐Full
and
SPS‐BT‐Full
are
designed
synthesized,
consisting
covalently
linked
benzofuran
(BF)
benzothiophene
(BT)
functionalized
thiophene–diketopyrrolopyrrole
(TDPP)
donor
N‐methyl
fullero[60]pyrrolidine
acceptor,
respectively.
The
incorporation
phenyl
bridge
between
TDPP
enhances
absorption
SPS‐BT‐Full,
resulting
short‐circuit
density
(
J
SC
).
Consequently,
SCOSCs
utilizing
attained
overall
power
conversion
efficiency
(PCE)
6.28
7.35%,
photovoltaic
OSCs
is
mainly
attributed
its
higher
external
quantum
balanced
hole
electron
mobility
μ
e
/
h
=
1.39),
along
with
imporved
charge
carrier
extraction,
revealing
more
effective
transport
comparison
counterparts.
