The Development of Quinoxaline‐Based Electron Acceptors for High Performance Organic Solar Cells
Advanced Materials,
Год журнала:
2024,
Номер
36(33)
Опубликована: Июнь 19, 2024
In
the
recent
advances
of
organic
solar
cells
(OSCs),
quinoxaline
(Qx)-based
nonfullerene
acceptors
(QxNFAs)
have
attracted
lots
attention
and
enabled
recorded
power
conversion
efficiency
approaching
20%.
As
an
excellent
electron-withdrawing
unit,
Qx
possesses
advantages
many
modifiable
sites,
wide
absorption
range,
low
reorganization
energy,
so
on.
To
develop
promising
QxNFAs
to
further
enhance
photovoltaic
performance
OSCs,
it
is
necessary
systematically
summarize
reported
far.
this
review,
all
focused
are
classified
into
five
categories
as
following:
SM-Qx,
YQx,
fused-YQx,
giant-YQx,
polymer-Qx
according
molecular
skeletons.
The
design
concepts,
relationships
between
structure
optoelectronic
properties,
intrinsic
mechanisms
device
discussed
in
detail.
At
end,
kind
materials
summed
up,
direction
prospected,
challenges
faced
by
given,
constructive
solutions
existing
problems
advised.
Overall,
review
presents
unique
viewpoints
conquer
challenge
thus
boost
OSCs
development
toward
commercial
applications.
Язык: Английский
Quinoxaline-based nonfullerene acceptors with powerful core-functionalization ability enabling efficient solar energy utilization
Energy & Environmental Science,
Год журнала:
2024,
Номер
17(14), С. 4944 - 4967
Опубликована: Янв. 1, 2024
Quinoxaline-based
nonfullerene
acceptors
show
highly
tunable
photoelectric
properties
and
superior
performance
for
sunlight
utilization
enabled
by
their
powerful
core-functionalization
ability.
Язык: Английский
Conjugated π-Extension of Small Molecular Nonfullerene Acceptor for Efficient Ternary Organic Solar Cells with an Efficiency of 19.10%
Energy & Fuels,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 14, 2025
In
this
study,
we
have
successfully
incorporated
a
small
molecular
acceptor,
Y-LC,
with
conjugated
π-extension
as
secondary
acceptor
in
the
PM6:BTP-eC9-based
organic
photovoltaics.
The
performance
of
device
was
significantly
promoted
from
18.45%
binary
system
PM6:BTP-eC9
to
over
19%
ternary
minimal
Y-LC
loading.
This
enhancement
can
be
attributed
alloy-like
structures
acceptors
and
optimized
active
layer
morphology,
which
leads
improved
hole
electron
mobilities,
thereby
suppressing
charge
recombination,
finally
resulting
higher
photocurrent
solar
cells.
Furthermore,
complementary
absorption
is
observed
PM6
BTP-eC9,
broaden
spectrum
photoactive
enable
more
photons
sunlight
absorbed.
Additionally,
facilitates
efficient
transfer
donor
by
forming
cascade
energy
levels
between
BTP-eC9.
These
advantages
collectively
contribute
superior
obtained
work
also
highlights
that
adoption
nonfullerene
suitable
π-extensions
minor
additive
photovoltaics
powerful
approach
for
achieving
state-of-the-art
Язык: Английский
Central π-conjugated extension in quinoxaline-based small-molecule acceptors as guest components enabling high-performance ternary organic solar cells
Journal of Materials Chemistry A,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Ternary
strategies
have
critical
roles
in
pursuing
high
efficiencies
for
organic
solar
cells
(OSCs).
Язык: Английский
Ternary Blend Organic Photovoltaics with High Efficiency and Stability Through Energy Transfer and Molecular Packing Induced by an A‐D‐A Small Molecule
Small,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 21, 2025
Abstract
A
novel
A‐D‐A
type
small
molecule
(DTP‐2EH‐IO2Cl)
incorporating
dithiophenepyrrole
(DTP)
core
with
indene‐dione
(IO2Cl)
side
chain
an
intermediate
band
gap
and
rigid
structure
is
incorporated
into
polymer
donor
PM6
one
of
the
three
A−DA′D−A
acceptor—L8‐BO,
BTP‐eC9
or
Y6—for
ternary‐blend
organic
photovoltaics
(OPVs).
The
third
component
DTP‐2EH‐IO2Cl
induces
not
only
energy
transfer
but
also
stronger
molecular
packing
acceptors,
resulting
in
a
larger
coherence
length
enhanced
absorption
that
enhances
devices’
power
conversion
efficiencies
(PCE)
thermal
stability.
PCE
values
champion
devices
PM6:L8‐BO,
PM6:BTP‐eC9,
PM6:Y6
are
19.2,
18.3,
17.6%,
respectively,
versus
16.5,
15.8,
15.4%
for
their
corresponding
binary
blend
devices,
displaying
relative
increases
from
14
to
16%.
stability
(T
80
)
PM6:L8‐BO:
ternary
device
dramatically
568
h
57
PM6:L8‐BO
device.
These
enhancements
can
be
attributed
effectiveness
as
increasing
light
through
inducing
intermolecular
providing
effective
way
tune
morphology
boost
both
OPVs.
Язык: Английский
Suppressing Non-Radiative Recombination and Tuning Morphology via Central Core Asymmetric Substitution for Efficient Organic Solar Cells
Nano Energy,
Год журнала:
2024,
Номер
131, С. 110204 - 110204
Опубликована: Сен. 6, 2024
Язык: Английский
Selenization Strategy of Phenazine‐based Non‐Fullerene Acceptors Promotes Photon Harvesting and Reduces Voltage Loss in Organic Solar Cells
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 26, 2024
Abstract
Phenazine‐based
small
molecular
acceptors
(SMAs),
which
benefit
from
the
reduced
energy
loss
(
E
),
have
emerged
as
promising
candidates
for
achieving
high‐efficiency
organic
solar
cells
(OSCs).
Nevertheless,
potential
advancements
of
phenazine‐based
photovoltaic
devices
are
hindered
by
constrained
short‐circuit
current
J
sc
).
Though
incorporation
selenium
(Se)
atoms
has
been
proven
effective
in
enhancing
,
it
simultaneously
introduces
disorder
stacking
and
charge
recombination.
Based
on
desire
to
harness
full
phenazine
structure
benefits
Se
substitution,
a
series
Se‐substituted
SMAs,
namely
PzIC‐SSe‐4F
PzIC‐SeSe‐4F
meticulously
synthesized.
Due
increased
photon
harvesting
capabilities,
device
using
demonstrated
significantly
27.73
mA
cm
−2
.
Remarkably,
PzIC‐SeSe‐4F‐based
displayed
an
astonishing
open
circuit
voltage
V
oc
)
0.873
V,
representing
highest
recorded
among
all
reported
symmetric
Y‐series
SMAs‐based
devices.
Thanks
synergistic
effect
central
cores
PM6:PzIC‐SeSe‐4F‐based
achieves
power
conversion
efficiency
(PCE)
17.69%.
The
findings
serve
pivotal
reference
further
development
Язык: Английский
Root-Cause Analyses for 3D Intermolecular Packing Network Formation in Central Unit Extended Small Molecular Acceptors
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 1, 2024
A
root-cause
analysis
discloses
the
critical
role
of
central
halogenation
and
extension
in
forming
enhanced-3D
intermolecular
packing
networks
SMAs.
Язык: Английский
Fluorination Strategy for Benzimidazole Core Based Electron Acceptors Achieving over 19% Efficiency for Ternary Organic Solar Cells
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 6, 2024
The
expansion
of
two-dimensional
conjugated
systems
in
nonfullerene
electron
acceptors
(NFAs)
has
significantly
advanced
the
molecular
design
and
efficiency
potential
organic
solar
cells
(OSCs).
This
study
introduces
a
novel
class
NFAs
featuring
benzimidazole
core
with
varying
degrees
peripheral
fluorination,
designated
as
YIS-4F,
YIS-6F,
YIS-8F,
respectively.
Through
systematic
modulation
fluorine
content,
we
observed
that
OSCs
incorporating
YIS-6F
achieved
highest
power
conversion
(PCE)
17.28%,
surpassing
those
YIS-4F
YIS-8F.
Notably,
incorporation
ternary
blend
D18/N3
yielded
remarkable
PCE
19.43%.
enhanced
performance
YIS-6F-based
devices
is
attributed
to
optimized
energy
level
alignment
crystallinity,
which
collectively
facilitate
efficient
exciton
dissociation,
accelerated
charge
transport,
minimized
recombination,
culminating
an
exceptional
fill
factor
PCE.
Our
findings
underscore
pivotal
role
fluorination
at
central
optimizing
packing,
consequently
enhancing
OSCs.
Язык: Английский