Solar RRL,
Journal Year:
2022,
Volume and Issue:
6(6)
Published: March 10, 2022
The
development
of
polymer
acceptors
is
critical
to
promote
the
power
conversion
efficiencies
(PCEs)
all‐polymer
solar
cells
(all‐PSCs).
Herein,
two
novel
(PBTz–TT
and
PFBTz–TT)
derived
from
non‐fused
small
molecules,
which
possess
synthetic
simplicity,
narrow
optical
bandgap,
high
absorption
coefficients,
are
reported
for
first
time.
all‐PSCs
fabricated
by
a
layer‐by‐layer
deposition
technique
with
PBDB‐T
as
donor,
device
performance
improved
synergistic
effect
solvent
additive
thermal
annealing.
As
result,
offer
PCEs
10.14%
6.85%
PFBTz‐TT
PBTz‐TT,
respectively.
Further
morphological
electrical
characterizations
unveil
that
higher
originates
more
efficient
exciton
separation
charge
transport
result
ordered
packing
in
solid
state.
it
demonstrated
polymerizing
molecular
an
effective
strategy
develop
high‐performance
all‐PSCs.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(23)
Published: March 21, 2022
Oligomeric
acceptors
are
expected
to
combine
the
advantages
of
both
highly
developed
small
molecular
and
polymeric
acceptors.
However,
organic
solar
cells
(OSCs)
based
on
oligomers
lag
far
behind
due
their
slow
development
low
diversity.
Here,
three
oligomeric
were
produced
through
oligomerization
molecules.
The
dimer
dBTICγ-EH
achieved
best
power
conversion
efficiencies
(PCEs)
14.48
%
in
bulk
heterojunction
devices
possessed
a
T80
(80
initial
PCE)
lifetime
1020
h
under
illumination,
which
better
than
that
More
excitingly,
it
showed
PCEs
16.06
quasi-planar
(Q-PHJ)
is
highest
value
OSCs
using
date.
These
results
suggest
molecules
promising
strategy
achieve
with
optimized
performance
between
high
efficiency
durable
stability,
offer
materials
bright
future
commercial
applications.
Aggregate,
Journal Year:
2021,
Volume and Issue:
3(3)
Published: May 1, 2021
Abstract
Considering
the
robust
and
stable
nature
of
active
layers,
advancing
power
conversion
efficiency
(PCE)
has
long
been
priority
for
all‐polymer
solar
cells
(all‐PSCs).
Despite
recent
surge
PCE,
photovoltaic
parameters
state‐of‐the‐art
all‐PSC
still
lag
those
polymer:small
molecule‐based
devices.
To
compete
with
counterparts,
judicious
modulation
morphology
thus
device
electrical
properties
are
needed.
It
is
difficult
to
improve
all
concurrently
all‐PSCs
advanced
efficiency,
one
increase
typically
accompanied
by
drop
other(s).
In
this
work,
aids
solvent
additive
(1‐chloronaphthalene)
n
‐type
polymer
(N2200),
we
can
fine‐tune
layer
demonstrate
a
16.04%
efficient
based
on
PM6:PY‐IT
layer.
The
grazing
incidence
wide‐angle
X‐ray
scattering
measurements
show
that
shape
crystallites
be
altered,
reshaped
lead
enhanced
more
balanced
charge
transport,
reduced
recombination,
suppressed
energy
loss,
which
improved
stability.
Advanced Energy Materials,
Journal Year:
2021,
Volume and Issue:
11(48)
Published: Nov. 7, 2021
Abstract
Despite
the
rapid
developments
in
all‐polymer
solar
cells
(all‐PSCs)
due
to
progress
of
polymerized
small
molecular
acceptors
(PSMA),
effect
linkage
unit
conjugation
on
polymer
acceptor
(P
A
)
is
not
well
understood
and
P
s
with
high
efficiency,
good
stability,
thickness‐insensitivity
are
rarely
seen.
Herein,
two
novel
PSMAs,
named
PJTVT
PJTET
designed,
by
incorporating
conjugated
thienylene‐vinylene‐thienylene
(TVT)
unconjugated
thienylene–ethyl–thienylene
(TET)
units,
respectively.
Results
show
that
energy
levels,
losses,
offset
PSMAs
have
little
difference
(
<≈
0.03
eV).
However,
π‐extended
coplanar
backbone
PJTVT,
when
blended
donor
JD40,
a
more
ordered
π–π
stacking
enhanced
face‐on
orientation
morphology
observed,
which
contributes
exciton
dissociation,
superior
charge
transport,
faster
extraction,
leading
record
power
conversion
efficiency
16.13%
(10.93%
for
JD40:PJTET).
Impressively,
JD40:PJTVT
device
shows
long‐term
both
make
it
an
ideal
choice
industrialization.
These
results
demonstrate
modulation
linking
promising
strategy
construct
high‐performance
thick‐film
all‐PSCs
superiority
backbones
PSMAs.
Advanced Materials,
Journal Year:
2022,
Volume and Issue:
34(20)
Published: March 15, 2022
All-polymer
solar
cells
(all-PSCs)
have
drawn
growing
attention
and
achieved
tremendous
progress
recently,
but
their
power
conversion
efficiency
(PCE)
still
lags
behind
small-molecule-acceptor
(SMA)-based
PSCs
due
to
the
relative
difficulty
on
morphology
control
of
polymer
photoactive
blends.
Here,
low-cost
PTQ10
is
introduced
as
a
second
donor
(a
third
component)
into
PM6:PY-IT
blend
finely
tune
energy-level
matching
microscopic
layer.
The
addition
decreases
π-π
stacking
distance,
increases
coherence
length
ordered
face-on
molecular
packing
orientation,
which
improves
charge
separation
transport
in
Moreover,
deeper
highest
occupied
orbital
energy
level
than
PM6
leads
higher
open-circuit
voltage
ternary
all-PSCs.
As
result,
PCE
16.52%
for
all-PSCs,
one
PCEs
In
addition,
devices
exhibit
high
tolerance
layer
thickness
with
15.27%
13.91%
at
≈205
≈306
nm,
respectively,
are
so
far
all-PSCs
thick
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
33(14)
Published: Jan. 22, 2023
Abstract
With
the
emergence
of
ADA'DA‐type
(Y‐series)
non‐fullerene
acceptors
(NFAs),
power
conversion
efficiencies
(PCEs)
organic
photovoltaic
devices
have
been
constantly
refreshed
and
gradually
reached
20%
in
recent
years
(19%
for
single
junction
tandem
device).
The
possess
specific
design
concept,
which
greatly
enrich
NFA
types
excellent
compatibility
with
many
donor
materials.
It
is
gratifying
to
note
that
previously
underperforming
materials
combine
these
regulated
shine
again.
Nowadays,
concept
modular
widely
used
research
donors,
injecting
new
vitality
into
field
photovoltaics.
Furthermore,
also
promote
multicomponent
devices,
bilayer
processing
solvent
engineering,
additive
engineering.
Herein,
latest
progresses
polymer
solar
cells
efficiency
over
17%
are
briefly
reviewed
from
aspects
active
material
design,
interface
development,
device
technology.
At
last,
opportunities
challenges
commercialization
future
discussed.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(21)
Published: Feb. 22, 2024
All-polymer
solar
cells
(all-PSCs)
have
been
regarded
as
one
of
the
most
promising
candidates
for
commercial
applications
owing
to
their
outstanding
advantages
such
mechanical
flexibility,
light
weight
and
stable
film
morphology.
However,
compared
large
amount
new-emerging
excellent
polymer
acceptors,
development
high-performance
donor
lags
behind.
Herein,
a
new
D-π-A
type
donor,
namely
QQ1,
was
developed
based
on
dithienoquinoxalineimide
(DTQI)
A
unit,
benzodithiophene
with
thiophene-conjugated
side
chains
(BDTT)
D
alkyl-thiophene
π-bridge,
respectively.
QQ1
not
only
possesses
strong
dipole
moment,
but
also
shows
wide
band
gap
1.80
eV
deep
HOMO
energy
level
-5.47
eV,
even
without
halogen
substituents
that
are
commonly
indispensable
donors.
When
blended
classic
acceptor
PY-IT,
QQ1-based
all-PSC
delivers
an
PCE
18.81
%.
After
introduction
F-BTA3
third
component,
record
19.20
%
obtained,
highest
value
reported
so
far
all-PSCs.
The
impressive
photovoltaic
performance
originates
from
broad
absorption
range,
reduced
loss,
compact
π-π
stacking.
These
results
provide
insight
in
rational
design
novel
nonhalogenated
donors
further
