Advanced Materials,
Год журнала:
2022,
Номер
34(45)
Опубликована: Сен. 15, 2022
With
the
continuous
breakthrough
of
efficiency
organic
photovoltaics
(OPVs),
their
practical
applications
are
on
agenda.
However,
thickness
tolerance
and
upscaling
in
recently
reported
high-efficiency
devices
remains
challenging.
In
this
work,
multiphase
morphology
desired
carrier
behaviors
realized
by
utilizing
a
quaternary
strategy.
Notably,
exciton
separation,
mobility,
lifetime
enhanced
significantly,
recombination
energy
loss
(Eloss
)
reduced,
thus
beneficial
for
higher
short-circuit
density
(JSC
),
fill
factor
(FF),
open-circuit
voltage
(VOC
system.
Moreover,
intermixing-phase
size
is
optimized,
which
favorable
constructing
thick-film
large-area
devices.
Finally,
device
with
110
nm-thick
active
layer
shows
an
outstanding
power
conversion
(PCE)
19.32%
(certified
19.35%).
Furthermore,
(1.05
72.25
cm2
nm
present
PCEs
18.25%
12.20%,
305
film
(0.0473
delivers
PCE
17.55%,
among
highest
values
reported.
The
work
demonstrates
potential
strategy
OPVs
promotes
application
future.
Advanced Materials,
Год журнала:
2021,
Номер
33(41)
Опубликована: Авг. 31, 2021
Abstract
Improving
power
conversion
efficiency
(PCE)
is
important
for
broadening
the
applications
of
organic
photovoltaic
(OPV)
cells.
Here,
a
maximum
PCE
19.0%
(certified
value
18.7%)
achieved
in
single‐junction
OPV
cells
by
combining
material
design
with
ternary
blending
strategy.
An
active
layer
comprising
new
wide‐bandgap
polymer
donor
named
PBQx‐TF
and
low‐bandgap
non‐fullerene
acceptor
(NFA)
eC9‐2Cl
rationally
designed.
With
optimized
light
utilization,
resulting
binary
cell
exhibits
good
17.7%.
NFA
F‐BTA3
then
added
to
as
third
component
simultaneously
improve
parameters.
The
improved
unitization,
cascaded
energy
level
alignment,
enhanced
intermolecular
packing
result
open‐circuit
voltage
0.879
V,
short‐circuit
current
density
26.7
mA
cm
−2
,
fill
factor
0.809.
This
study
demonstrates
that
further
improvement
PCEs
high‐performance
requires
fine
tuning
electronic
structures
morphologies
layers.
Chemical Reviews,
Год журнала:
2022,
Номер
122(18), С. 14180 - 14274
Опубликована: Авг. 5, 2022
Organic
photovoltaics
(OPVs)
have
progressed
steadily
through
three
stages
of
photoactive
materials
development:
(i)
use
poly(3-hexylthiophene)
and
fullerene-based
acceptors
(FAs)
for
optimizing
bulk
heterojunctions;
(ii)
development
new
donors
to
better
match
with
FAs;
(iii)
non-fullerene
(NFAs).
The
application
NFAs
an
A–D–A
configuration
(where
A
=
acceptor
D
donor)
has
enabled
devices
efficient
charge
generation
small
energy
losses
(Eloss
<
0.6
eV),
resulting
in
substantially
higher
power
conversion
efficiencies
(PCEs)
than
FA-based
devices.
discovery
Y6-type
(Y6
2,2′-((2Z,2′Z)-((12,13-bis(2-ethylhexyl)-3,9-diundecyl-12,13-dihydro-[1,2,5]-thiadiazolo[3,4-e]-thieno[2″,3″:4′,5′]thieno-[2′,3′:4,5]pyrrolo-[3,2-g]thieno-[2′,3′:4,5]thieno-[3,2-b]indole-2,10-diyl)bis(methanylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile)
A–DA′
D–A
further
propelled
the
PCEs
go
beyond
15%
due
smaller
Eloss
values
(∼0.5
eV)
external
quantum
efficiencies.
Subsequently,
Y6-series
single-junction
increased
>19%
may
soon
approach
20%.
This
review
provides
update
recent
progress
OPV
following
aspects:
developments
novel
donors,
understanding
structure–property
relationships
underlying
mechanisms
state-of-the-art
OPVs,
tasks
underpinning
commercialization
such
as
device
stability,
module
development,
potential
applications,
high-throughput
manufacturing.
Finally,
outlook
prospects
section
summarizes
remaining
challenges
technology.
Advanced Materials,
Год журнала:
2021,
Номер
33(27)
Опубликована: Май 28, 2021
Abstract
The
trade‐off
between
the
open‐circuit
voltage
(
V
oc
)
and
short‐circuit
current
density
J
sc
has
become
core
of
organic
photovoltaic
research,
realizing
minimum
energy
offsets
that
can
guarantee
effective
charge
generation
is
strongly
desired
for
high‐performance
systems.
Herein,
a
ternary
solar
cell
with
power
conversion
efficiency
over
18%
using
large‐bandgap
polymer
donor,
PM6,
small‐bandgap
alloy
acceptor
containing
two
structurally
similar
nonfullerene
acceptors
(Y6
AQx‐3)
reported.
This
system
take
full
advantage
irradiation
forms
favorable
morphology.
By
varying
ratio
acceptors,
delicate
regulation
levels
achieved,
thereby
affecting
dynamics
in
devices.
optimal
device
exhibits
more
efficient
hole
transfer
exciton
separation
than
PM6:AQx‐3‐based
reduced
loss
compared
PM6:Y6‐based
system,
contributing
to
better
performance.
Such
“two‐in‐one”
strategy,
which
synergizes
highly
compatible
provides
promising
path
boosting
performance
Energy & Environmental Science,
Год журнала:
2022,
Номер
15(6), С. 2537 - 2544
Опубликована: Янв. 1, 2022
A
novel
electron
acceptor,
BTP-H2,
demonstrates
a
high
efficiency
of
18.5%
with
V
oc
0.932
V.
It
also
enables
the
ternary
device
to
yield
an
19.2%,
ranking
highest
among
single-junction
organic
photovoltaics.
Advanced Materials,
Год журнала:
2021,
Номер
33(33)
Опубликована: Июль 10, 2021
Abstract
The
ternary
strategy,
introducing
a
third
component
into
binary
blend,
opens
simple
and
promising
avenue
to
improve
the
power
conversion
efficiency
(PCE)
of
organic
solar
cells
(OSCs).
judicious
selection
an
appropriate
component,
without
sacrificing
photocurrent
voltage
output
OSC,
is
significant
importance
in
devices.
Herein,
highly
efficient
OSCs
fabricated
using
approach
are
demonstrated,
wherein
novel
non‐fullerene
acceptor
L8‐BO‐F
designed
incorporated
PM6:BTP‐eC9
blend.
three
components
show
complementary
absorption
spectra
cascade
energy
alignment.
BTP‐eC9
found
form
homogeneous
mixed
phase,
which
improves
molecular
packing
both
donor
materials,
optimizes
blend
morphology.
Moreover,
addition
suppresses
non‐radiative
recombination,
thus
leading
reduced
loss.
Consequently,
concurrent
increases
open‐circuit
voltage,
short‐circuit
current,
fill
factor
realized,
resulting
unprecedented
PCE
18.66%
(certified
value
18.2%),
represents
highest
values
reported
for
single‐junction
tandem
so
far.
Angewandte Chemie International Edition,
Год журнала:
2020,
Номер
60(9), С. 4422 - 4433
Опубликована: Авг. 28, 2020
Abstract
All‐polymer
solar
cells
(all‐PSCs)
have
drawn
tremendous
research
interest
in
recent
years,
due
to
their
inherent
advantages
of
good
film
formation,
stable
morphology,
and
mechanical
flexibility.
The
most
representative
widely
used
n
‐CP
acceptor
was
the
naphthalene
diimide
based
D‐A
copolymer
N2200
before
2017,
power
conversion
efficiency
(PCE)
all‐PSCs
on
reached
over
8%
2016.
However,
low
absorption
coefficient
near‐infrared
(NIR)
region
limits
further
increase
its
PCE.
In
we
proposed
a
strategy
polymerizing
small‐molecule
acceptors
(SMAs)
construct
new‐generation
polymer
acceptors.
polymerized
SMAs
(PSMAs)
possess
band
gap
strong
NIR
region,
which
attracted
great
attention
drove
PCE
15%
recently.
this
Minireview
explain
design
strategies
molecular
structure
PSMAs
describe
progress.
Finally,
current
challenges
future
prospects
are
analyzed
discussed.
Advanced Materials,
Год журнала:
2022,
Номер
34(32)
Опубликована: Июнь 20, 2022
A
record
power
conversion
efficiency
(PCE)
of
over
19%
is
realized
in
planar-mixed
heterojunction
(PMHJ)
organic
solar
cells
(OSCs)
by
adopting
the
asymmetric
selenium
substitution
strategy
making
a
pseudosymmetric
electron
acceptor,
BS3TSe-4F.
The
combined
molecular
asymmetry
with
more
polarizable
increases
dielectric
constant
D18/BS3TSe-4F
blend,
helping
lower
exciton
binding
energy.
On
other
hand,
dimer
packing
BS3TSe-4F
facilitated
to
enable
free
charge
generation,
efficient
dissociation
and
lowering
radiative
recombination
loss
(ΔE2
)
OSCs.
As
result,
PMHJ
OSCs
based
on
achieve
PCE
18.48%.
By
incorporating
another
mid-bandgap
acceptor
Y6-O
into
form
ternary
PMHJ,
higher
open-circuit
voltage
(VOC
can
be
achieved
realize
an
impressive
19.03%.
findings
using
acceptors
enhancing
device
provides
effective
way
develop
highly
materials
for
Advanced Materials,
Год журнала:
2023,
Номер
35(25)
Опубликована: Март 25, 2023
Morphology
optimization
is
critical
for
achieving
high
efficiency
and
stable
bulk-heterojunction
(BHJ)
organic
solar
cells
(OSCs).
Herein,
the
use
of
3,5-dichlorobromobenzene
(DCBB)
with
volatility
low
cost
to
manipulate
evolution
BHJ
morphology
improve
operability
photostability
OSCs
proposed.
Systematic
simulations
reveal
charge
distribution
DCBB
its
non-covalent
interaction
active
layer
materials.
The
addition
can
effectively
tune
aggregation
PBQx-TF:eC9-2Cl
during
film
formation,
resulting
in
a
favorable
phase
separation
reinforced
molecular
packing.
As
result,
power
conversion
19.2%
(certified
as
19.0%
by
National
Institute
Metrology)
DCBB-processed
PBQx-TF:eC9-2Cl-based
OSCs,
which
highest
reported
value
binary
obtained.
Importantly,
devices
exhibit
superior
have
thus
considerable
application
potential
printing
large-area
devices,
demonstrating
outstanding
universality
various
systems.
study
provides
facile
approach
control
enhances
photovoltaic
performance
OSCs.