ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 20, 2024
It
is
challenging
to
build
a
deep
learning
predictive
model
using
traditional
data
mining
methods
due
the
scarcity
of
available
data,
and
model's
internal
decision-making
process
often
nonintuitive
difficult
explain.
In
this
work,
directed
message
passing
neural
network
with
transfer
(TL)
chemprop
interpreter
proposed
improve
energy
levels
prediction
visualization
for
organic
photovoltaic
materials.
The
established
shows
best
performance,
coefficient
determination
reaching
0.787
HOMO
0.822
LUMO
in
small
testing
set
after
TL,
compared
other
four
models.
Then,
analyzes
local
global
effects
12
molecular
structures
on
After
comprehensive
analysis
level
nonfullerene
Y-series,
IT-series,
materials,
new
IT-series
derivatives
are
designed.
1,1-dicyano-methylene-3-indanone
(IC)
end
group
halogenation
can
reduce
varying
degrees,
while
IC
modified
by
electron-withdrawing
aromatic
groups
increase
obtain
relatively
smaller
electrostatic
potential
(ESP)
reducing
intermolecular
interactions.
influence
side-chain
modification
limited.
worth
mentioning
that
predicted
results
match
density
functional
theory
calculations.
also
good
generalization
transferability
predicting
electronic
This
work
not
only
provides
cost-effective
materials
but
explains
bridge
between
structure
properties.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 5, 2025
Abstract
The
power
conversion
efficiencies
(PCEs)
of
all‐printed
organic
solar
cells
(OSCs)
remain
inferior
to
those
spin‐coated
devices,
primarily
due
morphological
variations
within
the
bulk
heterojunction
processed
via
diverse
coating/printing
techniques.
Herein,
cyclohexyl
is
introduced
as
outer
side
chains
formulate
a
non‐fullerene
acceptor,
BTP‐Cy,
aimed
at
modulating
molecular
aggregation
in
solution
and
subsequent
film
formation
kinetics
during
printing.
Investigations
demonstrate
that
BTP‐Cy
molecule
with
exhibits
enhanced
intermolecular
π‐π
stacking,
optimal
size,
favorable
phase
separation.
Consequently,
PB3:FTCC‐Br:BTP‐Cy‐based
OSCs
achieve
remarkable
PCEs
20.2%
19.5%
spin‐coating
blade‐coating,
respectively.
Furthermore,
23.6
cm
2
module
efficiency
16.7%.
This
study
offers
fresh
perspective
on
tailoring
photoactive
materials
printing
through
design,
paving
novel
path
enhance
OSCs.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 3, 2024
Abstract
By
selectively
interacting
with
acceptor
components,
various
typed
solid
additives
achieve
boosted
power
conversion
efficiency
(PCE)
in
organic
solar
cells
(OSCs).
However,
due
to
the
efficient
active
layer
being
composed
of
donor
and
materials,
it
is
difficult
obtain
desired
morphology
by
manipulating
component
alone,
limiting
further
improvement
PCEs.
Herein,
two
a
same
backbone
thiophene‐benzene‐thiophene
(halogen‐free
D1‐H)
but
different
halogen
substituents
(fluorinated
D1‐F
chlorinated
D1‐Cl)
are
developed
probe
working
mechanism
halogenated
variation
OSCs.
Unlike
D1‐H
continuous
charge
distributions,
D1‐Cl
show
isolated
positive
distribution
benzene‐core
negative
thiophene,
offering
stronger
non‐covalent
interactions
both
(PM6)
(L8‐BO),
especially
D1‐Cl.
Consequently,
D1‐Cl‐treated
obtains
an
optimized
phase
separation
improved
molecular
packing,
boosting
PCE
18.59%
device
stability
OSCs,
17.62%
for
D1‐H‐treated
counterparts.
Moreover,
using
D18:L8‐BO
D18:BTP‐eC9
as
layers,
binary
OSCs
impressive
PCEs
19.29%
19.39%,
respectively.
This
work
indicates
that
halogenation
engineering
can
effectively
regulate
improving
elucidates
underlying
mechanism.
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 3, 2025
The
power
conversion
efficiency
of
layer-by-layer
organic
solar
cells
(LOSCs)
has
reached
an
impressive
level
by
utilizing
sequential
processing
(SqP)
for
the
individual
deposition
and
regulation
both
donor
acceptor
materials.
However,
fundamental
understanding
phase
separation
in
LOSCs
remains
contentious,
hindering
rational
design
due
to
ambiguous
contribution
stratification
or
beneficial
vertical
segregation
morphology.
Here,
we
systematically
investigate
utility
solvent
effects
on
drying
kinetics
understand
how
interaction
between
upper
bottom
layers
affects
formation
donor/acceptor
(D/A)
interface
its
impact
performance
LOSCs.
Particularly
emphasizing
substantial
layer
establishment
effective
D/A
rather
than
significant
LOSCs,
this
facilitates
utilization
blend
casting
SqP,
introducing
adequate
interface,
which
contributes
a
superior
19.05%.
Ultimately,
provide
three
rules
enhancing
LOSCs:
(1)
appropriate
selection
solvents
material
ensure
desired
crystalline
orientation,
(2)
strongly
polar
volatile
capable
dissolving
form
interfacial
interaction,
(3)
sufficient
interfaces.
Science China Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 15, 2024
Abstract
The
development
of
high-performance
near-infrared
(NIR)
absorbing
electron
acceptors
is
a
major
challenge
in
achieving
high
short-circuit
current
density
(
J
SC
)
to
increase
power
conversion
efficiency
(PCE)
organic
solar
cells
(OSCs).
Herein,
three
new
multi-heteroatomized
Y-series
(bi-asy-Y-Br,
bi-asy-Y-FBr,
and
bi-asy-Y-FBrF)
were
developed
by
combining
dual-asymmetric
selenium-fused
core
brominated
end-groups
with
different
numbers
fluorine
substitutions.
With
gradually
increasing
fluorination,
exhibit
red-shift
absorption.
Among
them,
bi-asy-Y-FBrF
presents
planar
molecular
geometry,
the
maximum
average
electrostatic
potential,
minimum
dipole
moment,
which
are
conducive
intramolecular
packing
charge
transport.
Moreover,
D18:bi-asy-Y-FBrF
active
layer
higher
crystallinity,
more
suitable
phase
separation,
reduced
recombination
compared
D18:bi-asy-Y-Br
D18:bi-asy-Y-FBr
blends.
Consequently,
among
theses
binary
OSCs,
device
achieves
PCE
15.74%
an
enhanced
26.28
mA
cm
−2
,
while
obtains
moderate
15.04%
highest
open-circuit
voltage
V
OC
0.926
V.
Inspired
its
complementary
absorption
NIR-absorbing
BTP-eC9
as
acceptor,
bi-asy-Y-Br
introduced
into
D18:BTP-eC9
construct
ternary
further
boosted
19.12%,
top
values
for
reported
green
solvent
processed
OSCs.
Polymers,
Год журнала:
2025,
Номер
17(3), С. 284 - 284
Опубликована: Янв. 22, 2025
Planar
heterojunction
(PHJ)
is
employed
to
obtain
proper
vertical
phase
separation
for
highly
efficient
polymer
solar
cells
(PSCs).
However,
it
heavily
relies
on
the
choice
of
orthogonal
solvent
in
production
process.
Here,
we
fabricated
a
pseudo-bilayer
bulk
(PBHJ)
PSC
with
cross-distribution
direction
by
preparing
two
layers
PM6
and
BTP-eC9
blends
an
o-XY
solution
different
dilution
ratios
study
morphological
evolution
PBHJ
film.
We
found
that
film
exhibits
more
uniform
suitable
continuous
interpenetrating
network
morphology
formation
p-i-n
structure.
This
provides
effective
channel
exciton
dissociation
charge
transport,
which
confirmed
both
generation
simulations
dynamics
measurements.
The
devices
can
effectively
inhibit
trap
recombination
accelerate
transfer.
Based
good
active
layer
balanced
mobility,
all-green
solvent-processed
PSCs
champion
power
conversion
efficiencies
(PCEs)
18.48%
16.83%
are
obtained
PM6:BTP-eC9
PTQ10:BTP-eC9
systems,
respectively.
work
reveals
potential
mechanism
induced
structure
alternative
approach
developing
processing
PSCs.
Chemical Communications,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Three
terpolymers
were
developed
via
a
ternary
polymerization
strategy.
Owing
to
appropriate
aggregation
behavior
and
improved
compatibility,
the
J2-based
all
polymer
device
offers
an
excellent
power
conversion
efficiency
up
16.5%.
Abstract
Fingerprint‐on‐display
(FoD)
sensors
utilizing
organic
photodetectors
(OPDs)
are
nearing
commercialization,
making
it
crucial
to
develop
novel
conjugated
polymers
that
can
be
used
as
the
active
layer
for
this
technology.
These
should
meet
several
requirements
in
terms
of
patent
rights,
large‐scale
synthesis,
and
OPD
performance.
In
study,
containing
electron‐withdrawing
building
blocks,
easily
synthesized
from
a
2‐aminothiazole‐4‐carboxylate
Schiff
base
commonly
pharmaceutical
intermediate,
developed
high‐performance
OPDs
FoD
sensors.
Through
alkyl
chain
engineering
polymers,
highest
photocurrent
density
lowest
dark
current
values
were
achieved
OPDs.
This
resulted
best
performance
with
promising
responsivity
0.42
A/W
specific
detectivity
2.6
×
10
13
Jones
at
−2
V
under
near‐infrared
irradiation
(810
nm).
addition,
they
exhibited
excellent
rising
response
time
3–4
µs,
falling
6–11
−3
dB
cut‐off
frequency
80–100
kHz.
Finally,
is
integrated
into
an
thin‐film
transistor
array
build
sensor
80
µm
2
pixels,
resulting
successful
acquisition
digital
fingerprint
image.
