The
vinylene-bridged
helical
perylene
diimide
(PDI)
dimer
(PDI2)
with
a
build-in
twisted
configuration
is
an
alternative
building
block
to
the
parent
PDI
for
construction
of
efficient
non-fullerene
acceptor
(NFAs).
Moreover,
it
has
been
proved
asymmetric
strategy
plays
vital
role
in
development
NFAs.
Herein,
we
designed
and
synthesized
pair
acceptor-donor-acceptor
(A-D-A)
type
PDI2
derivatives,
namely
IDTIC-PDI
IDT-diPDI2,
which
contain
symmetric
end-cap
units,
respectively.
To
determine
structure-performance
relationships
strategy,
organic
solar
cells
(OSCs)
based
on
these
two
molecules
were
fabricated
measured.
device
exhibits
much
higher
PCE
8.23
%
than
that
IDT-diPDI2
(5.21
%).
These
results
reveal
symmetry
breaking
provides
effective
way
optimize
photovoltaic
performances
OSCs.
Advanced Energy Materials,
Год журнала:
2020,
Номер
10(45)
Опубликована: Окт. 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.
Journal of Materials Chemistry C,
Год журнала:
2021,
Номер
10(7), С. 2411 - 2430
Опубликована: Ноя. 27, 2021
Polycyclic
aromatic
hydrocarbons
(PAHs)
as
a
typical
class
of
organic
semiconductors
demonstrate
unique
optical,
electrical,
magnetic
and
other
interesting
properties
due
to
their
extended
conjugation
diverse
structures.
Advanced Functional Materials,
Год журнала:
2023,
Номер
33(24)
Опубликована: Март 4, 2023
Abstract
Integrating
a
third
component
into
the
binary
system
is
considered
to
be
one
of
most
effective
strategies
further
enhance
power
conversion
efficiency
(PCE)
in
organic
solar
cells
(OSCs).
Here,
novel
perylene
diimide
(PDI)
derivative
featuring
3D
structure,
TPA‐4PDI,
with
tetraphenyladamantane
central
core
developed
as
guest
electron
acceptor
incorporated
PM6:Y6
system.
The
champion
PCE
ternary
OSC
recorded
18.29%
by
adding
7.5
wt.%
TPA‐4PDI
blend,
which
photovoltaic
performance
enhanced
synergistically
increased
open‐circuit
voltage
(
V
oc
)
0.849
V,
short‐circuit
current
density
J
sc
27.55
mA
cm
−2
,
and
fill
factor
(FF)
78.21%.
exhibits
complementary
absorption
band
PM6
Y6
while
its
lowest
unoccupied
molecular
orbital
(LUMO)
energy
level
falls
between
two
host
materials.
addition
can
effectively
suppress
recombination
behavior,
inhibit
excessive
aggregation
improve
morphology
blend.
All
these
effects
function
then
lead
enhancement
oc,
FF
OSCs.
This
study
suggests
that
developing
PDI
derivatives
an
method
Journal of Materials Chemistry A,
Год журнала:
2023,
Номер
11(48), С. 26393 - 26425
Опубликована: Янв. 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.
Journal of Materials Chemistry A,
Год журнала:
2021,
Номер
9(36), С. 20510 - 20517
Опубликована: Янв. 1, 2021
This
study
presents
the
synthesis
of
small-molecule
acceptors
having
structure
A–D–A′–D–A—where
A,
A′,
and
D
represent
end
group,
core
π-bridge
unit,
respectively—that
form
active
layers
with
polymer
PM6
for
organic
photovoltaics.
Abstract
With
the
rapid
development
of
non‐fullerene
acceptors
(NFAs),
power
conversion
efficiency
(PCE)
organic
solar
cells
(OSCs)
is
increasing.
According
to
their
different
chemical
structures,
NFAs
can
initially
be
divided
into
two
categories:
small
molecule
(SMAs)
and
polymerized
(PSMAs).
Due
strong
absorption
capacity
controllable
energy
levels,
PCE
devices
based
on
SMAs
has
approached
20
%.
Compared
with
SMAs,
PSMAs
have
advantages
in
stability
flexibility,
PSMA‐based
exceeded
18
However,
higher
synthesis
cost
lower
batch
repeatability
hinder
its
further
development.
Recently,
concept
giant
(GMAs)
been
proposed.
These
materials
a
clear
molecular
structure
are
considered
novel
acceptor
that
combine
PSMAs.
Currently,
GMAs
19
In
this
review,
we
will
introduce
latest
developments
PSMAs,
GMAs.
Then,
relationship
between
performance
analyzed.
end,
perspectives
opportunities
challenges
these
provided,
which
could
inspire
for
advanced
OSCs.
