ACS Applied Materials & Interfaces,
Journal Year:
2021,
Volume and Issue:
13(30), P. 36071 - 36079
Published: July 20, 2021
Alkylthio
groups
can
be
used
to
modulate
energy
levels
and
molecular
packing
of
organic
semiconductors,
which
makes
it
important
in
the
design
materials
for
solar
cell.
However,
its
effect
has
not
been
sufficiently
exploited
as
most
studies
report
introducing
an
alkylthio
group
donor
unit
seldom
acceptor
donor–acceptor
conjugated
polymers.
In
this
report,
two
alkylthio-substituted
polymers,
namely,
PBB-TSA
PBB-TSD,
with
benzo[1,2-d:4,5-d′]bis(thiazole)
(BBT)
benzo[1,2-b:4,5-b′]dithiophene
(BDT)
unit,
were
rationally
designed,
synthesized,
applied
photovoltaics.
An
side
chain
was
substituted
on
BBT-accepting
PBB-TSA,
while
BDT
unit.
PBB-TSD
show
upshifted
downshifted
levels,
respectively,
compared
nonsulfur-substituted
material.
Both
polymers
exhibit
dominate
face-on
orientation,
exhibits
higher
crystallinity
PBB-TSA.
With
contribution
lower
level
beneficial
film
morphology,
device
based
PBB-TSD/IT-4F
much
power
conversion
efficiency
(PCE)
14.6%,
whereas
blend
had
a
PCE
10.7%.
1,8-Diiodooctane
effectively
optimize
performance
also
demonstrated
detail.
This
result
indicates
that
into
or
moieties
would
different
thus
utilized
match
various
acceptors,
achieving
optimized
cells.
ACS Nano,
Journal Year:
2020,
Volume and Issue:
14(11), P. 14493 - 14527
Published: Oct. 26, 2020
Despite
the
recent
breakthroughs
of
polymer
solar
cells
(PSCs)
exhibiting
a
power
conversion
efficiency
over
17%,
toxic
and
hazardous
organic
solvents
such
as
chloroform
chlorobenzene
are
still
commonly
used
in
their
fabrication,
which
impedes
practical
application
PSCs.
Thus,
development
eco-friendly
processing
methods
suitable
for
industrial-scale
production
is
now
considered
an
imperative
research
focus.
This
Review
provides
roadmap
design
efficient
photoactive
materials
that
compatible
with
non-halogenated
green
(e.g.,
xylenes,
toluene,
tetrahydrofuran).
We
summarize
to
match
non-fullerene
cells.
further
review
progress
use
more
(i.e.,
water
or
alcohol)
achieving
truly
sustainable
PSC
fabrication.
For
example,
concept
water-
alcohol-dispersed
nanoparticles
made
conjugated
introduced.
Also,
important
strategies
develop
water/alcohol-soluble
completely
eliminate
conventional
discussed.
Finally,
we
provide
our
perspectives
on
challenges
facing
current
materials,
large-area
coating
techniques
long-term
stability.
believe
this
will
inform
PSCs
clean
renewable
energy
sources.
Advanced Energy Materials,
Journal Year:
2020,
Volume and Issue:
10(45)
Published: Oct. 15, 2020
Abstract
With
the
advances
in
organic
photovoltaics
(OPVs),
development
of
low‐cost
and
easily
accessible
polymer
donors
is
vital
importance
for
OPV
commercialization.
Polythiophene
(PT)
its
derivatives
stand
out
as
most
promising
members
photovoltaic
material
family
commercial
applications,
owing
to
their
low
cost
high
scalability
synthesis.
In
recent
years,
PTs,
paired
with
nonfullerene
acceptors,
have
progressed
rapidly
performance.
This
Review
gives
an
overview
strategies
designing
PTs
OPVs
from
perspective
energy
level
modulation.
A
survey
typical
classes
acceptors
designed
pairing
benchmark
PT,
i.e.,
poly(3‐hexylthiophene)
(P3HT)
also
presented.
Furthermore,
achievements
understanding
controlling
film
morphology
PT:nonfullerene
blends
are
discussed
depth.
addition
effects
molecular
weight
blend
ratio
on
morphology,
crucial
roles
miscibility
between
PT
processing
solvent
determining
microstructure
highlighted,
followed
by
a
discussion
thermal
annealing
ternary
active
layers.
Finally,
remaining
questions
prospects
systems
outlined.
It
hoped
that
this
review
can
guide
optimization
advance
applications.
Advanced Energy Materials,
Journal Year:
2021,
Volume and Issue:
11(18)
Published: March 24, 2021
Abstract
Recent
advances
in
the
development
of
organic
photovoltaic
(OPV)
materials
has
led
to
significant
improvements
device
performance;
now
closing
on
20%
efficiency
threshold.
Despite
these
performance,
commercial
viability
products
remains
elusive.
In
this
perspective,
current
limitations
high
performing
blends
are
uncovered,
particularly
focusing
industrial
upscaling
considerations
materials,
such
as
synthetic
scalability,
active
layer
processing,
and
stability.
Moreover,
a
simplified
metric,
namely,
scalability
factor
(SF),
is
introduced
evaluate
scale‐up
potential
specific
OPV
thereof.
Of
most
popular
molecular
design
strategies
investigated
recent
times,
it
found
that
use
Y‐series
nonfullerene
acceptors
(NFAs)
synthetically
simple
PTQ‐10
ternary
blends,
effective
at
maximizing
without
negatively
impacting
SF.
Furthermore,
needed,
terms
processability
stability,
considered
for
final
product
application.
Finally,
an
outlook
photovoltaics
provided
both
from
perspective
important
research
avenues
applications
can
be
exploited.
Journal of Materials Chemistry C,
Journal Year:
2020,
Volume and Issue:
8(7), P. 2314 - 2319
Published: Jan. 1, 2020
In
this
contribution
we
report
on
solution
processed
red
OLEDs
based
upon
an
N-annulated
perylene
diimide
dimer,
namely
tPDI2N-EH,
a
red-light
emitting
molecule.
npj Flexible Electronics,
Journal Year:
2022,
Volume and Issue:
6(1)
Published: Oct. 30, 2022
Abstract
The
certified
power
conversion
efficiency
(PCE)
of
organic
photovoltaics
(OPV)
fabricated
in
laboratories
has
improved
dramatically
to
over
19%
owing
the
rapid
development
narrow-bandgap
small-molecule
acceptors
and
wide
bandgap
polymer
donor
materials.
next
pivotal
question
is
how
translate
small-area
laboratory
devices
into
large-scale
commercial
applications.
This
requires
OPV
be
solution-processed
flexible
satisfy
requirements
high-throughput
production
such
as
roll-to-roll
printing.
review
summarizes
analyzes
recent
progress
OPV.
After
a
detailed
discussion
from
perspective
behavior
narrow
acceptor
active
layer
devices,
existing
challenges
future
directions
are
discussed.
Journal of Materials Chemistry A,
Journal Year:
2023,
Volume and Issue:
11(48), P. 26393 - 26425
Published: Jan. 1, 2023
This
review
highlights
key
features
of
PDA-NFA:
molecular
design,
diverse
grafting
sites,
advanced
synthesis,
morphology
control,
and
optimized
device
performance.
provides
a
vision
for
high-performance
PDA-NFA
NF-OSCs.
Colorants,
Journal Year:
2023,
Volume and Issue:
2(1), P. 151 - 178
Published: March 21, 2023
This
work
covers
the
development
of
non-fullerene
acceptors
for
use
in
organic
photovoltaics
built
using
N-annulated
perylene
diimide
dye.
The
classic
dye
has
been
extensively
used
to
construct
acceptors,
leading
device
power
conversion
efficiencies
over
10%.
Strong
visible
light
absorption
and
deep
frontier
molecular
energy
levels
have
made
such
materials
(both
polymeric)
near
ideal
pairing
with
narrow-gap
conjugated
polymers
bulk-heterojunction
active
layers.
N-annulation
provides
an
extra
site
side-chain
engineering
alters
electronic
structure
polycyclic
aromatic
core.
In
addition,
allows
selective
bromination
core,
building
blocks
that
are
useful
construction
large
frameworks
atom-economical
direct
heteroarylation
cross-coupling
method.
Herein,
we
detail
a
series
molecules
developed
by
our
team
based
on
form
dimers
different
cores
electron-rich
electron-deficient);
varied
side
chains;
tetramers
varying
geometries;
large,
asymmetric
internal
cascades.
these
as
photovoltaic
devices
(binary
ternary
blends,
outdoor
indoor
applications,
spin-coated
vs.
slot-die-coated
photoactive
layers)
is
presented.
