Energy & Environmental Science,
Год журнала:
2022,
Номер
15(4), С. 1563 - 1572
Опубликована: Янв. 1, 2022
The
addition
of
ZY-4Cl
into
the
host
PM6:BTP-eC9
can
result
in
reduced
density
trap
states
and
suppressed
non-radiative
recombination,
thus
enabling
ternary
device
with
an
obviously
lower
voltage
loss
than
either
binary
devices.
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:
2022,
Номер
34(26)
Опубликована: Апрель 19, 2022
The
ternary
strategy
has
been
widely
identified
as
an
effective
approach
to
obtain
high-efficiency
organic
solar
cells
(OSCs).
However,
for
most
OSCs,
the
nonradiative
voltage
loss
lies
between
those
of
two
binary
devices,
which
limits
further
efficiency
improvements.
Herein,
asymmetric
guest
acceptor
BTP-2F2Cl
is
designed
and
incorporated
into
a
PM1:L8-BO
host
blend.
Compared
with
L8-BO
neat
film,
L8-BO:BTP-2F2Cl
blend
film
shows
higher
photoluminescence
quantum
yield
larger
exciton
diffusion
length.
Introducing
extends
its
absorption
spectrum,
improves
molecular
packing
materials,
suppresses
charge
recombination
OSCs.
Consequently,
power
conversion
improved
up
19.17%
(certified
value
18.7%),
represents
highest
reported
single-junction
OSCs
so
far.
results
show
that
improving
behaviors
promising
reducing
realizing
high-performance
Advanced Materials,
Год журнала:
2022,
Номер
34(13)
Опубликована: Янв. 26, 2022
Improving
charge
extraction
and
suppressing
recombination
are
critically
important
to
minimize
the
loss
of
absorbed
photons
improve
device
performance
polymer
solar
cells
(PSCs).
In
this
work,
highly
efficient
PSCs
demonstrated
by
progressively
improving
through
combination
side-chain
engineering
new
nonfullerene
acceptors
(NFAs),
adopting
ternary
blends,
introducing
volatilizable
solid
additives.
The
2D
side
chains
on
BTP-Th
induce
a
certain
steric
hindrance
for
molecular
packing
phase
separation,
which
is
mitigated
fluorination
BTP-FTh.
Moreover,
two
crystalline
molecules
as
second
acceptor
additive,
respectively,
into
BTP-FTh-based
host
blend,
crystallinity
significantly
improved
blend
morphology
finely
optimized.
As
expected,
enhanced
suppressed
realized,
contributing
largely
fill
factor
(FF)
resultant
devices.
Accompanied
open-circuit
voltage
(Voc
)
short-circuit
current
density
(Jsc
),
record
high
power
conversion
efficiency
(PCE)
19.05%
realized
finally.
Nature Communications,
Год журнала:
2023,
Номер
14(1)
Опубликована: Март 30, 2023
Non-fullerene
acceptors
based
organic
solar
cells
represent
the
frontier
of
field,
owing
to
both
materials
and
morphology
manipulation
innovations.
Non-radiative
recombination
loss
suppression
performance
boosting
are
in
center
cell
research.
Here,
we
developed
a
non-monotonic
intermediate
state
strategy
for
state-of-the-art
by
employing
1,3,5-trichlorobenzene
as
crystallization
regulator,
which
optimizes
film
process,
regulates
self-organization
bulk-heterojunction
manner,
i.e.,
first
enhancing
then
relaxing
molecular
aggregation.
As
result,
excessive
aggregation
non-fullerene
is
avoided
have
achieved
efficient
with
reduced
non-radiative
loss.
In
PM6:BTP-eC9
cell,
our
successfully
offers
record
binary
efficiency
19.31%
(18.93%
certified)
very
low
0.190
eV.
And
lower
0.168
eV
further
PM1:BTP-eC9
(19.10%
efficiency),
giving
great
promise
future
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:
2023,
Номер
35(21)
Опубликована: Март 3, 2023
The
ternary
blend
is
demonstrated
as
an
effective
strategy
to
promote
the
device
performance
of
organic
photovoltaics
(OPVs)
due
dilution
effect.
While
compromise
between
charge
generation
and
recombination
remains
a
challenge.
Here,
mixed
diluent
for
further
improving
efficiency
OPV
proposed.
Specifically,
high-performance
system
with
polymer
donor,
i.e.,
PM6,
nonfullerene
acceptor
(NFA),
BTP-eC9,
diluted
by
diluents,
which
involve
high
bandgap
NFA
BTP-S17
low
BTP-S16
(similar
that
BTP-eC9).
better
miscibility
BTP-eC9
can
dramatically
enhance
open-circuit
voltage
(VOC
),
while
maximizes
or
short-circuit
current
density
(JSC
).
interplay
BTP-17
enables
recombination,
thus
leading
19.76%
(certified
19.41%),
best
among
single-junction
OPVs.
Further
analysis
on
carrier
dynamics
validates
efficacy
diluents
balancing
be
attributed
more
diverse
energetic
landscapes
improved
morphology.
Therefore,
this
work
provides
commercialization.
Nature Communications,
Год журнала:
2022,
Номер
13(1)
Опубликована: Май 2, 2022
The
development
of
organic
solar
cells
(OSCs)
with
thick
active
layers
is
crucial
importance
for
the
roll-to-roll
printing
large-area
panels.
Unfortunately,
increasing
layer
thickness
usually
results
in
a
significant
reduction
efficiency.
Herein,
we
fabricated
efficient
thick-film
OSCs
an
consisting
one
polymer
donor
and
two
non-fullerene
acceptors.
acceptors
were
found
to
possess
enlarged
exciton
diffusion
length
mixed
phase,
which
beneficial
generation
dissociation.
Additionally,
by
approach
was
employed
optimize
vertical
phase
separation.
Benefiting
from
synergetic
effects
graded
separation,
efficiency
17.31%
(certified
value
16.9%)
obtained
300
nm-thick
OSC,
short-circuit
current
density
28.36
mA
cm-2,
high
fill
factor
73.0%.
Moreover,
device
500
nm
also
shows
15.21%.
This
work
provides
valuable
insights
into
fabrication
layers.
Advanced Materials,
Год журнала:
2022,
Номер
34(35)
Опубликована: Июль 15, 2022
The
development
of
polymerized
small-molecule
acceptors
has
boosted
the
power
conversion
efficiencies
(PCEs)
all-polymer
organic
photovoltaic
(OPV)
cells
to
17%.
However,
polymer
donors
suitable
for
OPV
are
still
lacking,
restricting
further
improvement
their
PCEs.
Herein,
a
new
donor
named
PQM-Cl
is
designed
and
its
performance
explored.
negative
electrostatic
potential
low
average
local
ionization
energy
distribution
surface
enable
efficient
charge
generation
transfer
process.
When
blending
with
well-used
acceptor,
PY-IT,
PQM-Cl-based
devices
deliver
an
impressive
PCE
18.0%
superior
fill
factor
80.7%,
both
which
highest
values
cells.
relevant
measurements
demonstrate
that
films
possess
excellent
mechanical
flexible
properties.
As
such,
fabricated
16.5%
high
stability
displayed.
These
results
candidate
provide
insights
into
design
high-efficient
Advanced Materials,
Год журнала:
2021,
Номер
34(46)
Опубликована: Ноя. 19, 2021
Ternary
blend
organic
solar
cells
(TB-OSCs)
incorporating
multiple
donor
and/or
acceptor
materials
into
the
active
layer
have
emerged
as
a
promising
strategy
to
simultaneously
improve
overall
device
parameters
for
realizing
higher
performances
than
binary
devices.
Whereas
introducing
also
results
in
more
complicated
morphology
their
counterparts.
Understanding
is
crucially
important
further
improving
performance
of
TB-OSC.
This
review
introduces
solubility
and
miscibility
that
affect
ternary
blends.
Then,
this
summarizes
recent
processes
study
on
blends
from
aspects
molecular
crystallinity,
packing
orientation,
domain
size
purity,
directly
observation
morphology,
vertical
phase
separation
well
morphological
stability.
Finally,
summary
prospects
TB-OSCs
are
concluded.