Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 28, 2025
Abstract
Simultaneously
mitigating
both
photovoltage
and
photocurrent
losses
is
crucial
for
organic
solar
cells
(OSCs)
to
approach
the
Shockley–Queisser
limit
of
ideal
efficiency.
Incorporating
a
narrower
bandgap
nonfullerene
acceptor
(NFA)
as
guest
component
into
host
donor:NFA
system
broadens
absorption
spectrum.
However,
this
can
also
increase
nonradiative
decay
rate
according
energy‐gap
law.
In
work,
ternary
OSCs
are
constructed
by
combining
narrow
AQx‐2F
(as
NFA)
with
lower
eC9
NFA),
significantly
enhancing
generation
without
compromising
photovoltage.
The
addition
acts
crystallization
inducer,
extending
period
increasing
ordered
packing
distance.
This
leads
suppressed
trap
states,
elevated
dielectric
constant,
prolonged
exciton
lifetime,
balanced
hole/electron
transport,
reduced
recombination
loss.
Consequently,
optimized
D18:AQx‐2F:eC9
achieve
champion
power
conversion
efficiency
(PCE)
20.6%
high
open‐circuit
voltage
0.937
V,
short‐circuit
current
density
27.2
mA
cm
−2
fill
factor
80.8%,
validated
an
independently
certified
PCE
20.0%,
establishing
new
benchmark
bulk
heterojunction
OSCs.
work
demonstrates
effective
method
simultaneously
mitigate
losses,
paving
way
high‐performance
Abstract
The
emerging
photovoltaic
(PV)
technologies,
such
as
organic
and
perovskite
PVs,
have
the
characteristics
of
complex
compositions
processing,
resulting
in
a
large
multidimensional
parameter
space
for
development
optimization
technologies.
Traditional
manual
methods
are
time‐consuming
labor‐intensive
screening
optimizing
material
properties.
Materials
genome
engineering
(MGE)
advances
an
innovative
approach
that
combines
efficient
experimentation,
big
database
artificial
intelligence
(AI)
algorithms
to
accelerate
materials
research
development.
High‐throughput
(HT)
platforms
perform
experimental
tasks
rapidly,
providing
amount
reliable
consistent
data
creation
databases.
Therefore,
novel
combining
HT
AI
can
design
application,
which
is
beneficial
establishing
material‐processing‐property
relationships
overcoming
bottlenecks
PV
This
review
introduces
key
technologies
involved
MGE
overviews
accelerating
role
field
PVs.
The
rapid
development
of
organic
solar
cells
(OSCs)
has
been
particularly
remarkable
following
the
introduction
high-performance
small
molecule
electron
acceptor
Y6
and
its
derivatives.
Despite
advances
in
state-of-the-art
OSCs,
challenges
remain,
notably
relatively
low
open
circuit
voltage
(VOC)
charge
mobility
imbalance,
which
continue
to
hinder
further
improvements
OSCs'
performance.
To
address
these
issues,
this
work,
we
synthesized
a
main-chain
twisted
wide
bandgap
i-IEDTB,
not
only
possesses
superior
hole
over
but
also
higher
lowest
unoccupied
molecular
orbital
(LUMO)
energy
levels,
adopted
it
as
bifunctional
third
compound
couple
with
terpolymer
Z10
based
OSC
system.
integration
i-IEDTB
Z10:Y6
blend,
either
an
or
donor,
significantly
reduces
excessive
aggregation
facilitates
harmonized
distribution
mobilities
by
modulating
crystallization
properties
materials.
This
strategic
intervention
leads
marked
improvement
VOC
fill
factor
(FF).
Consequently,
power
conversion
efficiency
(PCE)
optimized
Z10:(Y6:i-IEDTB)
ternary
device
is
elevated
impressive
17.70%,
surpassing
16.50%
binary
OSC.
Besides,
after
doping
5%
weight
replaced
that
Z10,
device's
VOC,
FF
were
increased
0.846
V
78.08%
respectively,
resulting
enhanced
PCE
17.47%.
Further
investigation
demonstrates
universality
PM6:BTP-eC9-based
PM6:L8-BO-based
achieving
champion
efficiencies
18.14
18.08%,
respectively.
work
highlights
key
role
complementary
component
crystallographic
order
carrier
balance
within
Y-type
acceptor-based
OSCs.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 28, 2025
Abstract
Simultaneously
mitigating
both
photovoltage
and
photocurrent
losses
is
crucial
for
organic
solar
cells
(OSCs)
to
approach
the
Shockley–Queisser
limit
of
ideal
efficiency.
Incorporating
a
narrower
bandgap
nonfullerene
acceptor
(NFA)
as
guest
component
into
host
donor:NFA
system
broadens
absorption
spectrum.
However,
this
can
also
increase
nonradiative
decay
rate
according
energy‐gap
law.
In
work,
ternary
OSCs
are
constructed
by
combining
narrow
AQx‐2F
(as
NFA)
with
lower
eC9
NFA),
significantly
enhancing
generation
without
compromising
photovoltage.
The
addition
acts
crystallization
inducer,
extending
period
increasing
ordered
packing
distance.
This
leads
suppressed
trap
states,
elevated
dielectric
constant,
prolonged
exciton
lifetime,
balanced
hole/electron
transport,
reduced
recombination
loss.
Consequently,
optimized
D18:AQx‐2F:eC9
achieve
champion
power
conversion
efficiency
(PCE)
20.6%
high
open‐circuit
voltage
0.937
V,
short‐circuit
current
density
27.2
mA
cm
−2
fill
factor
80.8%,
validated
an
independently
certified
PCE
20.0%,
establishing
new
benchmark
bulk
heterojunction
OSCs.
work
demonstrates
effective
method
simultaneously
mitigate
losses,
paving
way
high‐performance
