Science China Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 4, 2024
Abstract
All-polymer
solar
cells
(all-PSCs)
have
attracted
significant
research
attention
in
recent
years,
primarily
due
to
their
advantages
of
outstanding
photo-thermal
stability
and
excellent
mechanical
flexibility.
However,
all-PSCs
typically
exhibit
complex
morphologies
during
the
film
formation
blend
films,
tendency
become
entangled
polymer
chains,
negatively
impacting
fill
factor
(FF)
morphology
stability.
Therefore,
optimization
co-mingled
heterojunction
is
crucial
for
improving
device
performance.
Recent
studies
reveal
that
solid
additives
(SAs)
can
realize
regulation
molecular
aggregation
state,
packing,
domain
size
active
layer,
which
not
only
improves
exciton
dissociation,
charge
transport
collection
process
but
also
ultimately
realizes
enhancement
efficiency.
this
review
provides
an
in-depth
insight
into
different
mechanisms
all-PSCs,
offering
a
comprehensive
discussion
on
progress
optimizing
enhancing
Finally,
we
present
outlook
further
structural
modification
strategies
towards
better
bulk
paving
way
achieving
stability,
superior
flexibility,
high-efficiency
all-PSCs.
Energies,
Journal Year:
2024,
Volume and Issue:
17(11), P. 2623 - 2623
Published: May 29, 2024
In
this
work,
pseudo-bilayer
planar
heterojunction
(PPHJ)
all-polymer
solar
cells
(APSCs)
were
constructed
on
the
basis
of
commonly
used
PY-IT
and
PM6
as
acceptor
donor,
respectively.
A
nonfullerene
small
molecular
(NF-SMA)
BTP-eC9
was
incorporated
into
layer
solid
additive
in
consideration
its
similar
building
block
to
PY-IT.
can
serve
a
photon
capture
reinforcer
morphology-regulating
agent
realize
more
adequate
capture,
well
orderly
arrangement
for
effective
carrier
transport.
By
incorporating
2
wt%
BTP-eC9,
efficiency
PM6/PY-IT-based
PPHJ-APSCs
boosted
from
15.11%
16.47%,
accompanied
by
synergistically
enhanced
short
circuit
current
density
(JSC,
23.36
vs.
24.08
mA
cm−2)
fill
factor
(FF,
68.83%
72.76%).
another
system,
based
PBQx-TCl/PY-DT
active
layers,
could
be
17.51%
18.07%,
enabled
addition
L8-BO,
which
further
verified
effectiveness
using
an
NF-SMA
additive.
This
work
demonstrates
that
holds
great
potential
driving
development
PPHJ-APSCs.
Chinese Journal of Chemistry,
Journal Year:
2024,
Volume and Issue:
42(22), P. 2825 - 2832
Published: July 17, 2024
Comprehensive
Summary
The
morphology
of
the
active
layer
plays
a
crucial
role
in
performance
organic
photovoltaics.
Although
volatile
additives
are
commonly
used
to
manipulate
morphology,
their
mechanism
action
remains
poorly
understood.
In
this
study,
we
conducted
systematic
exploration
traditional
additive
1‐CN
film
formation
kinetics
typical
PM6:Y6
system.
We
found
that
induces
secondary
aggregation
effect,
improving
and
promoting
face‐on
crystalline
orientation.
Through
elucidating
its
impact
on
exciton
dynamics,
established
link
between
optimization
increased
diffusion
length
accelerated
charge
separation.
Our
findings
unveil
unique
additive,
providing
new
perspective
for
enhancing
photovoltaic
devices.
Energies,
Journal Year:
2024,
Volume and Issue:
17(16), P. 4022 - 4022
Published: Aug. 14, 2024
In
this
work,
layer-by-layer
organic
photovoltaics
(LbL
OPVs)
were
prepared
by
sequentially
spin-coating
PM1
and
L8-BO
solutions.
The
solvent
additive
1,8-diiodooctane
(DIO),
which
has
a
high
boiling
point,
solid
l,3,5-trichlorobenzene
(TCB),
volatile,
deliberately
selected
to
incorporate
with
the
power
conversion
efficiency
(PCE)
of
LbL
OPVs
was
considerably
enhanced
from
17.43%
18.50%
employing
TCB
as
additive,
profiting
concurrently
increased
short-circuit
current
density
(JSC)
26.74
mA
cm−2
fill
factor
(FF)
76.88%.
JSCs
ascribed
tilted-up
absorption
edge
in
long
wavelength
range
external
quantum-efficiency
spectral
difference
between
without
an
additive.
molecular
arrangement
domain
most
likely
responsible
for
charge
mobilities
layered
films
processed
additives.
It
indicated
that
dynamic
film-forming
process
acceptor
layers
plays
vital
role
achieving
efficient
strategy.
Over
6%
PCE
improvement
PM1/L8-BO
active
can
be
achieved
Science China Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 4, 2024
Abstract
All-polymer
solar
cells
(all-PSCs)
have
attracted
significant
research
attention
in
recent
years,
primarily
due
to
their
advantages
of
outstanding
photo-thermal
stability
and
excellent
mechanical
flexibility.
However,
all-PSCs
typically
exhibit
complex
morphologies
during
the
film
formation
blend
films,
tendency
become
entangled
polymer
chains,
negatively
impacting
fill
factor
(FF)
morphology
stability.
Therefore,
optimization
co-mingled
heterojunction
is
crucial
for
improving
device
performance.
Recent
studies
reveal
that
solid
additives
(SAs)
can
realize
regulation
molecular
aggregation
state,
packing,
domain
size
active
layer,
which
not
only
improves
exciton
dissociation,
charge
transport
collection
process
but
also
ultimately
realizes
enhancement
efficiency.
this
review
provides
an
in-depth
insight
into
different
mechanisms
all-PSCs,
offering
a
comprehensive
discussion
on
progress
optimizing
enhancing
Finally,
we
present
outlook
further
structural
modification
strategies
towards
better
bulk
paving
way
achieving
stability,
superior
flexibility,
high-efficiency
all-PSCs.
