Advanced Materials,
Год журнала:
2022,
Номер
34(18)
Опубликована: Март 2, 2022
Semitransparent
organic
photovoltaics
(ST-OPVs)
have
drawn
great
attention
for
promising
applications
in
building-integrated
photovoltaics,
providing
additional
power
generation
daily
use.
A
previously
proposed
strategy,
"complementary
NIR
absorption,"
is
widely
applied
high-performance
ST-OPVs.
However,
rational
material
design
toward
high
performance
has
not
been
achieved.
In
this
work,
an
external
quantum
efficiency
(EQE)
model
describing
strategy
developed
to
explore
the
full
potential
of
on
ST-OPV
performance.
Guided
by
model,
a
novel
nonfullerene
acceptor
(NFA),
ATT-9,
designed
and
synthesized,
which
possesses
optimal
bandgap
ST-OPVs,
achieving
record
short-circuit
current
density
30
mA
cm-2
conversion
13.40%,
highest
value
among
devices
based
NFAs
with
bandgaps
lower
than
1.2
eV.
It
notworthy
that,
at
such
low
bandgap,
energy
loss
device
only
0.58
eV,
attributed
energetic
disorder
confirmed
ultralow
Urbach
21.6
meV.
Benefiting
from
loss,
ATT-9-based
achieves
light
utilization
3.33%
without
optical
modulations,
meanwhile
shows
excellent
thermal
insulation,
exceeding
commercial
3M
heat-insulating
window
film,
demonstrating
outstanding
application
prospects
multifunctional
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(12)
Опубликована: Фев. 18, 2021
Abstract
Obtaining
a
finely
tuned
morphology
of
the
active
layer
to
facilitate
both
charge
generation
and
extraction
has
long
been
goal
in
field
organic
photovoltaics
(OPVs).
Here,
solution
resolve
above
challenge
via
synergistically
combining
layer‐by‐layer
(LbL)
procedure
ternary
strategy
is
proposed
demonstrated.
By
adding
an
asymmetric
electron
acceptor,
BTP‐S2,
with
lower
miscibility
binary
donor:acceptor
host
PM6:BO‐4Cl,
vertical
phase
distribution
can
be
formed
donor‐enrichment
at
anode
acceptor‐enrichment
cathode
OPV
devices
during
LbL
processing.
In
contrast,
LbL‐type
OPVs
based
on
PM6:BO‐4Cl
still
show
bulk‐heterojunction
like
morphology.
The
formation
not
only
reduce
recombination
but
also
promote
collection,
thus
enhancing
photocurrent
fill
factor
OPVs.
Consequently,
exhibit
best
efficiency
18.16%
(certified:
17.8%),
which
among
highest
values
reported
date
for
work
provides
facile
effective
approach
achieving
high‐efficiency
expected
morphologies,
demonstrates
as
being
promising
fabricating
from
present
laboratory
study
future
industrial
production.
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
Journal of the American Chemical Society,
Год журнала:
2020,
Номер
142(44), С. 18741 - 18745
Опубликована: Окт. 21, 2020
Typical
organic
photovoltaic
materials
show
high
Urbach
energies
(ca.
25–50
meV),
which
is
considerably
higher
than
those
of
their
inorganic
counterparts
and
limits
further
improvement
in
the
device
efficiency
solar
cells
(OSCs).
In
this
study,
we
introduce
a
facile
method
selenium
substitution
to
reduce
energy
20.4
meV
(Y6Se),
lowest
value
reported
for
high-performance
very
close
15
meV)
typical
inorganic/hybrid
semiconductors,
such
as
crystalline
silicon,
gallium
nitride,
lead-halide
perovskite.
Next,
OSCs
based
on
Y6Se
showed
17.7%
efficiency,
among
best
results
record
as-cast
single
junction
date.
Energy & Environmental Science,
Год журнала:
2020,
Номер
14(1), С. 90 - 105
Опубликована: Ноя. 26, 2020
In
this
review,
current
research
status
about
the
machine
learning
use
in
organic
solar
cell
is
reviewed.
We
have
discussed
challenges
anticipating
data
driven
material
design.
Angewandte Chemie International Edition,
Год журнала:
2021,
Номер
60(23), С. 12964 - 12970
Опубликована: Апрель 2, 2021
Abstract
Despite
the
remarkable
progress
achieved
in
recent
years,
organic
photovoltaics
(OPVs)
still
need
work
to
approach
delicate
balance
between
efficiency,
stability,
and
cost.
Herein,
two
fully
non‐fused
electron
acceptors,
PTB4F
PTB4Cl,
are
developed
via
a
two‐step
synthesis
from
single
aromatic
units.
The
introduction
of
two‐dimensional
chain
halogenated
terminals
for
these
acceptors
plays
synergistic
role
optimizing
their
solid
stacking
orientation,
thus
promoting
an
elongated
exciton
lifetime
fast
charge‐transfer
rate
bulk
heterojunction
blends.
As
result,
upon
blending
with
PBDB‐TF
polymer,
has
enabled
single‐junction
OPVs
power
conversion
efficiencies
12.76
%,
representing
highest
values
among
reported
unfused
so
far.
Energy & Environmental Science,
Год журнала:
2021,
Номер
14(6), С. 3469 - 3479
Опубликована: Янв. 1, 2021
Regulating
side-chain
orientations
of
Y-series
NFAs
is
a
promising
strategy
to
achieve
favorable
morphology,
and
high
charge
mobility
solar
cell
performances,
which
enables
high-performance
devices
with
efficiency
approaching
18%.
Advanced Materials,
Год журнала:
2021,
Номер
34(10)
Опубликована: Окт. 28, 2021
Abstract
Near‐infrared
(NIR)‐absorbing
organic
semiconductors
have
opened
up
many
exciting
opportunities
for
photovoltaic
(OPV)
research.
For
example,
new
chemistries
and
synthetical
methodologies
been
developed;
especially,
the
breakthrough
Y‐series
acceptors,
originally
invented
by
our
group,
specifically
Y1,
Y3,
Y6,
contributed
immensely
to
boosting
single‐junction
solar
cell
efficiency
around
19%;
novel
device
architectures
such
as
tandem
transparent
photovoltaics
realized.
The
concept
of
NIR
donors/acceptors
thus
becomes
a
turning
point
in
OPV
field.
Here,
development
NIR‐absorbing
materials
OPVs
is
reviewed.
According
low‐energy
absorption
window,
here,
(p‐type
(polymers)
n‐type
(fullerene
nonfullerene))
are
classified
into
four
categories:
700–800
nm,
800–900
900–1000
greater
than
1000
nm.
Each
subsection
covers
design,
synthesis,
utilization
various
types
donor
(D)
acceptor
(A)
units.
structure–property
relationship
between
kinds
D,
A
units
window
constructed
satisfy
requirements
different
applications.
Subsequently,
variety
applications
realized
materials,
including
OPVs,
photodetectors,
presented.
Finally,
challenges
future
next‐generation
beyond
discussed.
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.