Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(19)
Published: March 10, 2024
Abstract
Se‐functionalized
small
molecule
acceptors
(SMAs)
exhibit
unique
advantages
in
constructing
materials
with
near‐infrared
absorption,
but
their
photovoltaic
performance
lags
behind
that
of
S‐containing
analogs
organic
solar
cells
(OSCs).
Herein,
two
new
Se‐containing
SMAs,
namely
Se‐EH
and
Se‐EHp,
are
designed
synthesized
by
regulating
bifurcation
site
outer
alkyl
chain,
which
enables
Se‐EHp
to
form
different
3D
crystal
frameworks
from
CH1007.
displays
tighter
π–π
stacking
denser
packing
framework
smaller‐sized
pore
structure
induced
larger
steric
hindrance
effect
chain
branched
at
2‐position,
a
higher
dielectric
constant
PM6:Se‐EH
active
layer
can
be
obtained.
OSCs
based
on
achieved
very
high
PCEs
18.58%
binary
19.03%
ternary
devices
FF
approaching
80%
for
SMAs.
A
more
significant
adjusts
the
molecular
crystallization
favorable
nanofiber
interpenetrating
network
an
appropriate
domain
size
reduce
rate
sub‐ns
recombination
promote
balanced
transport
carriers.
This
work
provides
references
further
design
development
highly
efficient
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(37)
Published: May 30, 2024
Stretchable
organic
photovoltaics
(OPVs)
have
attracted
significant
attention
as
promising
power
sources
for
wearable
electronic
systems
owing
to
their
superior
robustness
under
repetitive
tensile
strains
and
good
compatibility.
However,
reconciling
a
high
power-conversion
efficiency
reasonable
flexibility
is
tremendous
challenge.
In
addition,
the
development
of
stretchable
OPVs
must
be
accelerated
satisfy
increasing
requirements
niche
markets
mechanical
robustness.
OPV
devices
can
classified
either
structurally
or
intrinsically
stretchable.
This
work
reviews
recent
advances
in
OPVs,
including
design
mechanically
robust
transparent
electrodes,
photovoltaic
materials,
devices.
Initially,
an
overview
characteristics
research
progress
areas
provided.
Subsequently,
into
flexible
electrodes
that
directly
affect
performances
summarized
analyzed.
Overall,
this
review
aims
provide
in-depth
understanding
intrinsic
properties
highly
efficient
deformable
active
while
also
emphasizing
advanced
strategies
simultaneously
improving
performance
layer,
material
design,
multi-component
settings,
structural
optimization.
Energy & Environmental Science,
Journal Year:
2024,
Volume and Issue:
17(12), P. 4216 - 4227
Published: Jan. 1, 2024
Pincer-shaped
non-covalent
bond
interactions
are
introduced
between
a
small-molecule
additive
and
polymer
acceptor,
effectively
improving
the
photovoltaic
performance
mechanical
stability
of
all-polymer
solar
cells.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(21)
Published: Jan. 31, 2024
Abstract
Herein,
efficient
ternary
all‐polymer
solar
cells
(all‐PSCs)
are
fabricated
by
employing
PDEDTQ
that
possesses
down‐shifted
highest
occupied
molecular
orbital
(HOMO)
level
and
blue‐shifted
absorption
with
higher
maximum
coefficients
compared
the
host
donor
JD40‐BDD20
as
a
guest
into
JD40‐BDD20:PA‐5
blend.
The
enhanced
light‐harvesting
energy
transfer
from
to
can
be
observed
in
device,
which
conduces
improving
short
circuit
current
density
(
J
SC
).
Additionally,
shows
relatively
weak
crystalline
well
miscibility
JD40‐BDD20,
meaning
morphology
tuned
using
PDEDTQ.
Subsequently,
more
uniform
fine‐divided
network
slightly
weakened
occurs
blend
film,
implying
intermixing
domain
of
donor/acceptor
(D/A)
interfaces
may
formed.
Thus,
JD40‐BDD20:PA‐5,
device
obtained
exciton
dissociation
charge
extraction,
reducing
recombination
loss
E
Ultimately,
addition
guaranteeing
outstanding
fill
factor
(FF),
improve
open
voltage
V
OC
)
achieved
then
boosted
power
conversion
efficiency
(PCE)
17.39%
18.47%,
is
one
PCEs
for
all‐PSCs.
Overall,
this
work
provides
guidance
on
forming
high‐quality
distribution
D/A
strategy,
obtaining
high‐efficiency
all‐PSCs
processed
non‐halogenated
solvent.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(19)
Published: March 10, 2024
Abstract
Se‐functionalized
small
molecule
acceptors
(SMAs)
exhibit
unique
advantages
in
constructing
materials
with
near‐infrared
absorption,
but
their
photovoltaic
performance
lags
behind
that
of
S‐containing
analogs
organic
solar
cells
(OSCs).
Herein,
two
new
Se‐containing
SMAs,
namely
Se‐EH
and
Se‐EHp,
are
designed
synthesized
by
regulating
bifurcation
site
outer
alkyl
chain,
which
enables
Se‐EHp
to
form
different
3D
crystal
frameworks
from
CH1007.
displays
tighter
π–π
stacking
denser
packing
framework
smaller‐sized
pore
structure
induced
larger
steric
hindrance
effect
chain
branched
at
2‐position,
a
higher
dielectric
constant
PM6:Se‐EH
active
layer
can
be
obtained.
OSCs
based
on
achieved
very
high
PCEs
18.58%
binary
19.03%
ternary
devices
FF
approaching
80%
for
SMAs.
A
more
significant
adjusts
the
molecular
crystallization
favorable
nanofiber
interpenetrating
network
an
appropriate
domain
size
reduce
rate
sub‐ns
recombination
promote
balanced
transport
carriers.
This
work
provides
references
further
design
development
highly
efficient
