Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 7, 2024
The
solution
aggregation
structure
of
conjugated
polymers
is
crucial
to
the
morphology
and
resultant
optoelectronic
properties
organic
electronics
considerable
interest
in
field.
Precise
characterizations
structures
photovoltaic
(OPV)
blends
their
temperature-dependent
variations
remain
challenging.
In
this
work,
three
representative
high-efficiency
OPV
using
small-angle
X-ray/neutron
scattering
are
systematically
probed.
Three
cases
processing
resiliency
elucidated
state-of-the-art
blends.
exceptional
PBQx-TF
can
be
attributed
minimal
changes
multiscale
at
elevated
temperatures.
Importantly,
a
new
parameter,
percentage
acceptors
distributed
within
polymer
aggregates
(Ф),
for
first
time
blend
solution,
establishes
direct
correlation
between
Ф
performance
quantified.
device
well
correlated
with
Kuhn
length
cylinder
related
L
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 11, 2025
Abstract
Connecting
small
molecule
acceptors
through
conjugated
or
nonconjugated
linker
to
form
giant
molecular
(GMAs)
represents
a
strategic
approach
enhancing
the
morphological
stability
of
organic
solar
cells
(OSCs).
In
this
study,
we
employed
benzothiadiazole
(BT)
as
typical
n
‐type
design
and
synthesize
two
GMAs
linking‐site
isomerization:
i‐BT‐DY
o‐BT‐DY.
Compared
i‐BT‐DY,
o‐BT‐DY
exhibits
enhanced
crystallinity
more
favorable
face‐on
orientation
but
lower
electron
mobility.
This
can
be
well
explained
by
theoretical
calculations,
demonstrates
delocalized
LUMO
distribution
significantly
stronger
intramolecular
super‐exchange
coupling
(43.7
meV
versus
22.2
for
o‐BT‐DY).
Additionally,
also
red‐shifted
absorption.
Combining
these
attributes,
PM6:
blend
achieved
an
impressive
power
conversion
efficiency
(PCE)
18.86%.
The
PCE
further
increased
19.49%
in
ternary
blend.
As
expected,
OSCs
based
on
both
exhibit
exceptional
long‐term
photostability
(T85%
>1000
hours).
work
deepens
our
understanding
how
linkers
at
different
linking
sites
influence
performance
GMAs,
concluding
that
interaction,
rather
than
intermolecular,
are
primary
factor
affecting
charge
transport
acceptors.
it
highlights
potential
components
OSCs.
Sustainability,
Journal Year:
2025,
Volume and Issue:
17(5), P. 1820 - 1820
Published: Feb. 21, 2025
Flexibility,
light
weight,
and
mechanical
robustness
are
the
key
advantages
of
flexible
photovoltaic
(PV)
modules,
making
them
highly
versatile
for
sustainable
energy
solutions.
Unlike
traditional
rigid
PV
their
nature
makes
incredibly
harnessing
in
places
where
doing
so
was
once
impossible.
They
have
a
wide
range
applications
due
to
flexibility
moldability,
it
possible
conform
these
modules
surfaces
like
curved
rooftops
other
irregular
structures.
In
this
paper,
we
provide
comprehensive
review
all
materials
used
with
focus
on
role
sustainability.
We
thoroughly
discuss
active-layer
crystalline
silicon
(c-Si)-based
solar
cells
(SC)
thin-film
such
as
cadmium
telluride
(CdTe),
well
copper
indium
gallium
diselenide
(CIGS),
amorphous
(a-Si),
perovskite
organic
cells.
Various
properties,
optical,
barrier,
thermal,
properties
different
substrate
materials,
reviewed.
Transport
layers
conductive
electrode
discussed
emerging
trends
contributions
technology.
fabrication
techniques
involved
along
advantages,
disadvantages,
future
trends,
highlighted
paper.
The
commercialization
is
also
discussed,
which
crucial
milestone
advancing
adapting
new
technologies
industry
contributing
toward
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 3, 2025
Abstract
The
development
of
organic
solar
cells
(OSCs)
with
high
efficiency
and
stability
is
highly
desirable
to
facilitate
its
commercial
applications.
Although
dimeric
acceptors
distinctive
advantages
have
been
widely
studied,
high‐performance
binary
OSCs
based
on
such
molecules
rarely
achieved.
In
this
work,
a
new
acceptor
(DY‐FL)
constructed
by
simultaneously
optimizing
the
linking
sites
units,
as
well
building
blocks.
Thanks
effective
molecular
design,
DY‐FL
provides
improved
stacking
for
fibrous
morphology
favorable
exciton/charge
dynamics.
Consequently,
DY‐FL‐based
render
superior
power
conversion
(PCE)
19.78%,
representing
record‐breaking
acceptors.
Importantly,
devices
display
significantly
enhanced
operational
under
external
stimuli
light
heat,
in
comparison
their
small
molecule
(Y‐F)‐based
counterpart.
These
findings
highlight
significance
blocks
modes,
providing
insight
into
design
strategy
state‐of‐the‐art
OSCs.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(9), P. 3851 - 3862
Published: Feb. 21, 2024
D–A
polymers
exhibit
excellent
intramolecular
charge
transfer
(ICT)
properties
due
to
the
differences
in
energy
levels.
However,
bulky
dihedral
angles
between
D
and
A
units
with
conjugated
structures
have
a
negative
impact
on
process
of
ICT,
which
inhibits
efficient
electron
transport
adjacent
units.
To
solve
this
problem,
noncovalent
conformational
locks
were
constructed
by
introduction
π-bridges.
Intriguingly,
thiophene
π-bridges
containing
sulfur
elements
can
form
S─H
locks,
not
only
extend
structure
overcome
steric
hindrance
but
also
enhance
efficiency
transport.
Therefore,
PFPy-TT
PFPy-TTBT
exhibited
superior
short-circuit
density
(JSC)
compared
PFPy-BT
without
locks.
Meanwhile,
benzothiazole
moiety
exhibits
stronger
ICT
better
extraction
structure.
The
enhanced
enable
intermolecular
performance,
realizing
power
conversion
(PCE)
16.15%.
By
constructing
using
cathode
interfacial
layers
(CILs),
problem
inferior
coplanarity
is
resolved,
favorable
molecular
alignment
promoted,
while
demonstrating
exceptional
storage,
light,
heat,
air
stability.
device
maintains
over
80%
its
initial
PCE
value
when
stored
nitrogen
condition
for
120
h.
These
advances
hold
promise
improving
film
quality
organic
solar
cells.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 7, 2024
The
solution
aggregation
structure
of
conjugated
polymers
is
crucial
to
the
morphology
and
resultant
optoelectronic
properties
organic
electronics
considerable
interest
in
field.
Precise
characterizations
structures
photovoltaic
(OPV)
blends
their
temperature-dependent
variations
remain
challenging.
In
this
work,
three
representative
high-efficiency
OPV
using
small-angle
X-ray/neutron
scattering
are
systematically
probed.
Three
cases
processing
resiliency
elucidated
state-of-the-art
blends.
exceptional
PBQx-TF
can
be
attributed
minimal
changes
multiscale
at
elevated
temperatures.
Importantly,
a
new
parameter,
percentage
acceptors
distributed
within
polymer
aggregates
(Ф),
for
first
time
blend
solution,
establishes
direct
correlation
between
Ф
performance
quantified.
device
well
correlated
with
Kuhn
length
cylinder
related
L
