Interfacial
engineering
is
essential
to
achieve
optical
efficiencies
and
facilitate
the
industrialization
of
organic
solar
cells
(OSCs).
By
doping
organosilica
nanodots
(OSiNDs)
into
zinc
oxide
(ZnO),
we
have
developed
a
hybrid
ZnO/OSiNDs
(4
wt
%)
cathode
interface
layer
(CIL)
that
significantly
enhances
overall
performance
inverted
(i-OSCs).
In
PM6/BTP-eC9
active
system,
i-OSC
devices
with
CIL
exhibit
superior
power
conversion
efficiency
(PCE)
17.49%,
surpassing
reference
pure
ZnO
(15.88%).
The
OSiNDs
not
only
modulate
work
function
ZnO,
thereby
facilitating
carrier
transport
between
layer,
but
also
enhance
device
stability.
After
exposure
1200
min
100
mW/cm
High-energy
photons
arising
from
the
UV
component
of
solar
spectrum
are
considered
as
a
primary
cause
photoinduced
degradation
observed
in
organic
cells
(OSCs).
We
herein
demonstrate
scheme
harvesting
these
high-energy
via
down-conversion
(UVDC)
layer
embedded
thin
polymeric
substrates
an
effective
strategy
for
simultaneously
enhancing
efficiency
and
improving
photostability
OSCs.
Transparent
UV-curable
photopolymer
resin
(NOA
61,
Norland,
Inc.)
is
employed
to
prepare
polymer
substrate
sandwich
UVDC
comprised
Ir(dmppy-ph)2tmd─a
highly
efficient
yellow
phosphorescent
emitter,
which
exhibits
high
degree
spectral
overlap
between
its
emission
spectra
absorption
PM6,
donor
used
photoactive
blend
along
with
non-fullerene
acceptor
Y7.
The
PM6:Y7
bulk
heterojunction
OSCs
fabricated
on
found
show
nearly
7.2%
higher
power
conversion
(PCE).
study
reveals
that
improvement
performance
essentially
due
ability
absorb
some
make
them
available
by
down-converting
visible
region
optical
scattering
effect
leads
longer
path
length
within
active
layer.
A
done
monitoring
PV
function
exposure
time
indicates
that,
proposed
approach,
it
possible
achieve
3-fold
enhancement
T97,
or
takes
PCE
become
97%
initial
value,
alleviating
UV-induced
photochemical
degradation.
Statistical
analysis
also
performed
wide
range
sample
distributions,
verifying
reliability
repeatability
results.
Macromolecular Rapid Communications,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 3, 2024
Abstract
The
dimerization
of
small
molecule
acceptors
(SMAs)
holds
significant
potential
by
combining
the
advantages
both
SMAs
and
polymer
in
realizing
high
power
conversion
efficiency
(PCE)
operational
stability
organic
solar
cells
(OSCs).
However,
advancements
selection
innovation
dimeric
linkers
are
still
challenging
enhancing
their
performance.
In
this
study,
three
new
acceptors,
namely
DY‐Ar‐4,
DY‐Ar‐5,
DY‐Ar‐6
synthesized,
linking
two
Y‐series
SMA
subunits
via
an
“end‐to‐end”
strategy
using
flexible
spacers
(octyl,
decyl,
dodecyl,
respectively).
influence
spacer
lengths
on
device
performance
is
systematically
investigated.
results
indicate
that
DY‐Ar‐5
exhibits
more
compact
ordered
packing,
leading
to
optimal
morphology.
OSCs
based
PM6:
achieves
a
maximum
PCE
15.76%,
attributes
enhance
balance
carrier
mobility,
reduce
recombination.
This
suitable
non‐conjugated
units
provides
rational
principle
for
designing
high‐performance
non‐fullerene
acceptors.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 10, 2024
Abstract
Flexible
and
stretchable
organic
solar
cells
(FOSCs
SOSCs)
hold
immense
potential
due
to
their
versatility
applicability
in
emerging
areas
such
as
wearable
electronics,
foldable
devices,
biointegrated
systems.
Despite
these
promising
applications,
several
challenges
remain,
primarily
related
the
mechanical
durability,
material
performance,
scalability
required
for
commercialization.
This
review
comprehensively
highlights
recent
advancements
design
fabrication
of
FOSCs
SOSCs,
with
a
particular
emphasis
on
key
functional
layers,
including
transparent
conductive
electrodes,
interfacial
photoactive
materials,
top
electrodes.
Innovations
design,
active
layers
electrodes
improved
flexibility,
are
discussed
alongside
developments
device
processes
achieve
power
conversion
efficiencies
exceeding
19%.
Furthermore,
addresses
remaining
challenges,
need
scalable
manufacturing
techniques
enhanced
robustness
under
strain.
Finally,
prospects
SOSCs
analyzed,
providing
insights
into
how
technologies
can
contribute
development
sustainable,
high‐performance
sources
electronic
devices
other
flexible
electronics.
offers
valuable
insights,
bringing
commercialization
wearable,
closer
reality.
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 5, 2025
Abstract
Organic
photovoltaics
(OPV)
are
a
promising
solar
cell
technology
well‐suited
to
mass
production
using
roll‐to‐roll
processes.
The
efficiency
of
lab‐scale
cells
has
exceeded
20%
and
considerable
attention
is
currently
being
given
understanding
minimizing
the
remaining
loss
mechanisms
preventing
higher
efficiencies.
While
recent
improvements
partly
owed
reducing
non‐radiative
recombination
losses
at
open
circuit,
low
fill
factor
(
FF
)
due
significant
transport
resistance
becoming
Achilles
heel
OPV.
term
refers
voltage
light
intensity‐dependent
charge
collection
in
low‐mobility
materials.
In
this
perspective,
it
demonstrated
that
even
highest
organic
(OSCs)
reported
to‐date
have
performance
can
be
attributed
lead
high
losses.
A
closer
look
material
properties
influencing
provided.
How
experimentally
characterize
quantify
described
by
providing
easy
follow
instructions.
Furthermore,
causes
theory
behind
detailed.
particular,
relevant
figures
merit
(FoMs)
different
viewpoints
on
integrated.
Finally,
we
outline
strategies
followed
minimize
these
future
cells.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 7, 2025
Abstract
Current
state‐of‐the‐art
organic
photovoltaic
(OPV)
films,
composed
of
conjugated
polymer
donors
and
small
molecule
acceptors,
are
often
limited
by
the
high
brittleness
their
rigid
backbones,
which
restricts
application
in
wearable
devices.
In
contrast,
all‐polymer
OPVs
have
demonstrated
enhanced
intrinsic
stretchability,
but
further
advancements
necessary
to
meet
demands.
Here,
an
uncharted
strategy
is
reported
enhance
mechanical
stretchability
performance
incorporating
a
nearly‐amorphous
polymer,
poly(indacenodithiophene‐co‐benzothiadiazole)
(IDTBT)
into
layer‐by‐layer
structured
active
layer.
IDTBT
possesses
fracture
strain
≈80%,
significantly
outperforming
well‐known
donor
polymers
like
PM6.
The
incorporation
enhances
properties,
with
both
optimized
at
low
contents.
More
importantly,
intrinsically
stretchable
demonstrate
superior
stability
impressive
power
conversion
efficiency
14.2%,
highest
date
this
category.
Particularly,
IDTBT‐strengthened
retain
72%
initial
under
tensile
50%,
68%
even
after
being
stretched
hundreds
times
30%
strain,
demonstrating
exceptional
stability.
This
approach
underscores
potential
semiconductors
designing
highly
OPVs,
paving
way
for
seamless
integration
electronics.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 18, 2024
Abstract
High
efficiency,
stability,
and
flexibility
are
key
prerequisites
for
the
commercial
applications
of
organic
solar
cells
(OSCs).
Herein,
three
back‐to‐back
connected
dimers
(2Qx‐TT,
2Qx‐C3,
2Qx‐C6)
developed
as
guest
acceptors
OSCs
with
improved
comprehensive
performance.
By
regulating
linkage
from
rigid
bithiophene
to
flexible
alkyl
chain,
display
quite
different
molecular
geometry
intermolecular
interactions,
consequently
influencing
their
packing
arrangement,
film‐forming
process,
carrier
mobilities,
device
flexibility.
introducing
these
dimer
into
active
layer,
form
alloy
phases
host
acceptor,
promoting
process
charge
dynamics.
All
ternary
devices
exhibit
PCEs
over
18%
than
control
binary
device.
Among
them,
2Qx‐C3‐based
obtains
best
efficiency
high
19.03%.
Moreover,
thanks
stronger
entanglement
favored
by
linkage,
PM6:BTP‐eC9:2Qx‐C3‐based
shows
outstanding
stability
The
displays
an
PCE
16.09%
a
crack‐onset
strain
15.0%,
showing
excellent
mechanical
robustness
close
all‐polymer
devices.
This
work
demonstrates
potential
highly
efficient,
stable
OSCs.
Macromolecular Rapid Communications,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 3, 2024
Abstract
Branch‐connected
dimerized
acceptors
can
take
full
advantages
of
four
end
units
in
enhancing
molecular
packing
comparing
to
that
terminal‐connected
ones,
thus
potentially
reaching
the
best
balance
between
stability
and
power
conversion
efficiency
(PCE)
organic
solar
cells
(OSCs).
Herein,
two
branch‐connected
acceptors,
namely
D1
D2,
are
developed
by
employing
bithiophene
difluorinated
as
linker
groups,
respectively.
Induced
fluorine
atoms
on
group,
D2
affords
a
larger
molar
extinction
coefficient,
more
importantly,
optimized
nanoscale
film
morphology
superior
charge
transport
behavior
D1.
Consequently,
D2‐based
binary
OSCs
render
good
PCE
16.66%,
outperforming
15.08%
for
D1‐based
ones.
This
work
highlights
great
significance
group
screening
designing
high‐performance
acceptors.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 5, 2024
Abstract
Significant
advancements
in
power
conversion
efficiency
have
been
achieved
organic
solar
cells
with
small
molecule
acceptors.
However,
stability
remains
a
primary
challenge,
impeding
their
widespread
adoption
renewable
energy
applications.
This
review
summarizes
the
degradation
of
different
layers
within
device
structure
under
varying
conditions,
including
light,
heat,
moisture,
and
oxygen.
For
photoactive
layers,
chemical
pathways
polymer
donors
acceptors
are
examined
detail,
alongside
morphological
bulk
heterojunction
structure,
which
plays
crucial
role
performance.
The
mechanisms
commonly
used
anode
cathode
interlayers
electrodes
addressed,
as
these
significantly
influence
overall
stability.
Mitigation
methods
for
identified
provided
each
section
to
offer
practical
insights
improving
longevity.
Finally,
an
outlook
presents
remaining
challenges
achieving
long‐term
stability,
emphasizing
research
directions
that
require
further
investigation
enhance
reliability
performance
real‐world
