Ternary
copolymerization
has
been
proven
to
be
an
effective
method
regulate
the
photovoltaic
properties
of
polymer
donors.
However,
terpolymers
synthesized
using
ternary
strategy
inevitably
disrupt
periodic
sequence
distribution
backbone,
resulting
in
increased
molecular
disorder
and
heightened
main-chain
entropy.
Herein,
we
developed
two
terpolymer
donors
by
introducing
electron-deficient
fused-ring
skeleton
unit
BTP
with
a
large
dipole
moment
into
main
chain
PM6
via
copolymerization.
We
found
that
presence
enables
exhibit
enhanced
crystallinity
electrostatic
potential,
leading
excellent
miscibility
more
ordered
packing
than
PM6.
As
result,
maximum
PCE
19.40%
was
achieved
for
PY5:L8-BO-based
device.
Overall,
this
work
introduces
novel
approach
developing
high-performance
combining
third
component
moments
restrain
enhance
intermolecular
interaction
force
between
acceptors.
ACS Photonics,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 17, 2025
Spatiotemporal
microscopy
plays
an
important
role
in
the
quest
for
highly
efficient
light
harvesting
materials
as
it
allows
direct
tracking
of
nanoscale
transport
excitons,
carriers
photon
energy.
Unfortunately,
achieving
high
resolution
both
space
and
time
often
requires
scanning
beam
spots
or
delay
lines,
limiting
these
techniques
to
specialized
research
groups.
To
overcome
this
problem,
we
introduce
a
novel
implementation
photoluminescence-detected
exciton
using
camera
composed
array
single-photon
avalanche
diodes
(SPADs),
gated
with
∼150
ps
temporal
accuracy.
The
use
such
SPAD
drastically
simplifies
experiment,
is
free
moving
parts,
provides
at
least
1
order
magnitude
increase
collection
efficiency
due
parallel
multipixel
acquisition.
Moreover,
one
implement
different
super-resolution
excitation
strategies.
Here
show
point
structured
same
device
by
simply
changing
optical
element.
illumination
retrieval
diffusion
from
single
time-resolved
imaging
without
fitting,
even
fluences
far
below
exciton–exciton
annihilation
conditions.
We
tested
effectiveness
studying
properties
organic
photovoltaic
material
PM6,
where
measured
length
45
nm.
Certainly
our
new
implementation,
boosted
rapid
advances
technology,
will
extend
range
users
applications
spatiotemporal
microscopy.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 10, 2025
Abstract
Perovskite‐organic
tandem
solar
cells
(TSCs)
possess
significant
potential
due
to
their
unique
features,
such
as
orthogonal
processing
solvents,
tunable
bandgap,
and
infinite
molecular
designs.
However,
device
performance
is
often
hindered
by
the
limited
series
current
density,
which
constrained
absorption
of
rear
organic
cell
(OSC).
Here,
a
fine‐grained
sub‐cell
matching
model
has
been
developed
that
enables
rapid
screening
material
combinations
based
on
practical
parameters.
The
indicates
increasing
thickness
OSC
layer
an
effective
approach
boost
efficiency,
while
also
reducing
manufacturing
challenges
for
large‐scale
production.
To
mitigate
charge
collection
issues
arising
from
excessive
thickness,
contact
passivation
technique
self‐assembled
monolayer
developed,
minimizes
non‐radiative
recombination
reduces
Schottky
barrier
at
interface,
enabling
more
balanced
hole‐electron
transport.
As
result,
thick‐film
(300
nm)
achieved
record‐high
efficiency
18.08%
(certified
17.80%),
enhancing
TSCs
24.31%
24.00%).
Furthermore,
large‐area
photovoltaic
module
with
exceeding
18.54%
(18.48
cm
2
)
demonstrated.
knowledge,
this
represents
first
demonstration
perovskite‐organic
TSCs.
Ternary
copolymerization
has
been
proven
to
be
an
effective
method
regulate
the
photovoltaic
properties
of
polymer
donors.
However,
terpolymers
synthesized
using
ternary
strategy
inevitably
disrupt
periodic
sequence
distribution
backbone,
resulting
in
increased
molecular
disorder
and
heightened
main-chain
entropy.
Herein,
we
developed
two
terpolymer
donors
by
introducing
electron-deficient
fused-ring
skeleton
unit
BTP
with
a
large
dipole
moment
into
main
chain
PM6
via
copolymerization.
We
found
that
presence
enables
exhibit
enhanced
crystallinity
electrostatic
potential,
leading
excellent
miscibility
more
ordered
packing
than
PM6.
As
result,
maximum
PCE
19.40%
was
achieved
for
PY5:L8-BO-based
device.
Overall,
this
work
introduces
novel
approach
developing
high-performance
combining
third
component
moments
restrain
enhance
intermolecular
interaction
force
between
acceptors.
