Energies,
Год журнала:
2023,
Номер
16(16), С. 5868 - 5868
Опубликована: Авг. 8, 2023
Photovoltaics
has
become
one
of
the
emerging
alternatives
to
progressively
supply/replace
conventional
energy
sources,
considering
potential
exploitation
solar
energy.
Depending
on
nature
light
harvester
influence
its
light-absorption
capability
and
facility
produce
electricity,
different
generations
devices
have
been
fabricated.
Early
studies
organic
molecules
(dye
sensitizers)
with
good
absorption
coefficients,
going
through
metal
chalcogenides
and,
lastly,
timely
emergence
halide
perovskites,
promoted
development
novel
low-cost
cells
promising
photoconversion
efficiency
(PCE),
close
well-established
Si-based
devices.
However,
main
drawbacks
such
as
degradation/photocorrosion
active
layer,
existence
intrinsic
defect
sites,
inherent
toxicity
material
due
presence
some
harmful
elements
blocked
future
commercialization
above
kind
cells.
In
this
review,
we
highlight
current
progress
in
achieving
efficient
photomaterials
for
organic,
perovskites-based
purpose
high
PCE
values,
which
are
breakthroughs
research
topic,
diverse
approaches
used
extend
stability
layer
improve
performance
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(42)
Опубликована: Авг. 26, 2023
In
the
molecular
optimizations
of
non-fullerene
acceptors
(NFAs),
extending
central
core
can
tune
energy
levels,
reduce
nonradiative
loss,
enhance
intramolecular
(donor-acceptor
and
acceptor-acceptor)
packing,
facilitate
charge
transport,
improve
device
performance.
this
study,
a
new
strategy
was
employed
to
synthesize
featuring
conjugation-extended
electron-deficient
cores.
Among
these,
acceptor
CH-BBQ,
embedded
with
benzobisthiadiazole,
exhibited
an
optimal
fibrillar
network
morphology,
enhanced
crystallinity,
improved
generation/transport
in
blend
films,
leading
power
conversion
efficiency
18.94
%
for
CH-BBQ-based
ternary
organic
solar
cells
(OSCs;
18.19
binary
OSCs)
owing
its
delicate
structure
design
electronic
configuration
tuning.
Both
experimental
theoretical
approaches
were
used
systematically
investigate
influence
on
properties
The
modulation
paves
pathway
engineering
NFAs,
propelling
relevant
research
forward.
Energy & Environmental Science,
Год журнала:
2024,
Номер
17(14), С. 5173 - 5182
Опубликована: Янв. 1, 2024
By
introducing
highly
crystalline
material
D18A
into
donor
layer
acting
as
energy
and
nucleating
agent,
an
optimal
PCE
of
19.25%
was
achieved
for
PM1
:
D18A/L8-BO
based
OPVs.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(11)
Опубликована: Янв. 15, 2024
Abstract
Achieving
a
more
balanced
charge
transport
by
morphological
control
is
crucial
in
reducing
bimolecular
and
trap‐assisted
recombination
enhancing
the
critical
parameters
for
efficient
organic
solar
cells
(OSCs).
Hence,
facile
strategy
proposed
to
reduce
crystallinity
difference
between
donor
acceptor
incorporating
novel
multifunctional
liquid
crystal
small
molecule
(LCSM)
BDTPF4‐C6
into
binary
blend.
first
LCSM
based
on
tetrafluorobenzene
unit
features
low
phase
transition
temperature
strong
self‐assembly
ability,
conducive
regulating
active
layer
morphology.
When
introduced
as
guest
PM6
:
Y6
binary,
it
exhibits
better
compatibility
with
primarily
resides
within
because
of
similarity‐intermiscibility
principle.
Moreover,
systematic
studies
revealed
that
could
be
used
seeding
agent
enhance
its
crystallinity,
thereby
forming
favourable
suppressed
recombination.
Intriguingly,
dual
Förster
resonance
energy
transfer
was
observed
host
acceptor,
resulting
an
improved
current
density.
This
study
demonstrates
approach
balance
mobilities
offers
new
insights
boosting
efficiency
single‐junction
OSCs
beyond
20
%.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 13, 2025
Abstract
Y‐series
nonfullerene
acceptors
(NFAs)
usually
bear
halogenated
end
groups
to
achieve
narrow
bandgaps
and
tunable
molecules
crystallinity;
however,
it
results
in
small
open‐circuit
voltage
(
V
oc
)
of
0.8–0.9
V.
Here,
three
NFAs
BTP‐eC9‐G51,
BTP‐eC9‐G52,
BTP‐eC9‐G53
are
synthesized
by
introducing
both
an
electron‐withdrawing
fluoro
group
electron‐donating
alkoxy
commonly
used
2‐(3‐oxo‐2,3‐dihydroinden1‐ylidene)‐malononitrile
(IC)
terminal
groups.
These
compounds
demonstrate
a
high
larger
than
0.9
when
employed
as
organic
solar
cells
(0.91
for
BTP‐eC9‐G51
0.95
the
others).
The
effect
chain
length
on
photoelectric
properties
is
systematically
studied.
show
that
dipole
moments
aggregation
behaviors
these
changes
obviously
with
increase
length.
active
layer
based
shows
suitable
phase
separation
structure
good
charge
transport.
Devices
device
efficiency
16.65%,
higher
those
BTP‐eC9‐G52
devices
(14.33%
13.24%,
respectively).
Furthermore,
introduced
into
D18:L8‐BO
third
component,
which
improves
J
sc
,
reduces
nonradiation
energy
loss,
increased
19.03%
0.92
Nature Communications,
Год журнала:
2025,
Номер
16(1)
Опубликована: Янв. 2, 2025
The
shortwave
infrared
(SWIR)
region
is
an
ideal
spectral
window
for
next-generation
bioimaging
to
harness
improved
penetration
and
reduced
phototoxicity.
SWIR
activity
may
also
be
accessed
via
supramolecular
dye
aggregation.
Unfortunately,
development
of
aggregation
remains
challenging.
We
propose
a
crystal-aided
aggregate
synthesis
(CAASH)
approach
introduce
layer
rationality
the
J-aggregate
successful
water-soluble
JV-aggregate
with
bisbenzannulated
silicon
rhodamine
scaffold
(ESi5).
resulting
SWIR-aggregates
exhibit
excellent
stabilities
toward
organic
solvents,
pH,
sonication,
photobleaching,
thiols,
endogenous
oxidative
species.
Notably,
aggregates
have
high
structure-dependent
melting
temperature
ca.
330-335
K.
In
fact,
heating/annealing
process
can
exploited
reduce
disorder.
are
biocompatible
broad
potential
in
vivo
fluorescence
photoacoustic
imaging
more.
While
has
applications,
stable
absorbers/emitters
challenging
access.
Here,
authors
report
J-aggregates
bioimaging.
Advanced Functional Materials,
Год журнала:
2023,
Номер
33(40)
Опубликована: Авг. 30, 2023
Abstract
Reducing
the
trap
density
within
organic
solar
cells
is
of
vital
importance
to
realize
high
power
conversion
efficiency
(PCE);
however,
research
focusing
on
this
aspect
limited
in
all‐polymer
(All‐PSCs).
In
work,
it
found
that
can
be
dramatically
reduced
by
simultaneously
obtaining
miscibility
donor
and
acceptor
ordered
packing
blend
films
through
substituting
ethylhexyl
with
hybrid
cyclohexyl‐hexyl
side
chains
design
polymer
donor.
D18‐ChCl
has
a
slightly
lower
aggregation
behavior
relative
D18‐Cl
counterpart,
but
reveals
synchronously
higher
crystallinity
PYF‐T‐o.
Such
morphology
evolution
positively
affects
electronic
properties
device—prolongs
carrier
lifetime,
facilitates
exciton
dissociation,
lowers
energy
disorder.
As
result,
All‐PSC
devices
based
exhibited
remarkable
PCE
17.1%,
low
2.65
×
10
15
cm
−3
,
disorder
47
meV
as
well
outstanding
stability
mechanical
durability.
This
result
demonstrates
alkyl
engineering
delicately
improves
miscibility,
drives
density,
refines
device
performance,
which
brings
vibrancy
field.
Advanced Materials,
Год журнала:
2023,
Номер
36(22)
Опубликована: Июль 3, 2023
All-small-molecule
organic
solar
cells
(ASM-OSCs)
have
received
tremendous
attention
in
recent
decades
because
of
their
advantages
over
polymer
counterparts.
These
include
well-defined
chemical
structures,
easy
purification,
and
negligible
batch-to-batch
variation.
Remarkable
progress
with
a
power
conversion
efficiency
(PCE)
17%
has
recently
been
achieved
improved
charge
management
(FF
×
J
Abstract
The
energy
loss
induced
open‐circuit
voltage
(
V
OC
)
deficit
hampers
the
rapid
development
of
state‐of‐the‐art
organic
solar
cells
(OSCs),
therefore,
it
is
extremely
urgent
to
explore
effective
strategies
address
this
issue.
Herein,
a
new
volatile
solid
additive
1,4‐bis(iodomethyl)cyclohexane
(DIMCH)
featured
with
concentrated
electrostatic
potential
distribution
utilized
act
as
morphology‐directing
guest
reduce
in
multiple
state‐of‐art
blend
system,
leading
one
highest
efficiency
(18.8%)
at
forefront
reported
binary
OSCs.
Volatile
DIMCH
decreases
radiative/non‐radiative
recombination
(Δ
E
2
/Δ
3
by
rationally
balancing
crystallinity
donors
and
acceptors
realizing
homogeneous
network
structure
crystal
domain
reduced
D–A
phase
separation
during
film
formation
process
weakens
disorder
trap
density
It
believed
that
study
brings
not
only
profound
understanding
emerging
additives
but
also
hope
further
improve
performance
Energy & Environmental Science,
Год журнала:
2024,
Номер
17(11), С. 3868 - 3877
Опубликована: Янв. 1, 2024
We
developed
two
shamrock-shaped
NFAs,
AQI2
and
AQI4.
D18:AQI2
achieved
a
PCE
of
16.48%
with
V
OC
1.00
V,
D18:AQI4
higher
18.02%
0.95
due
to
decreased
energy
loss
efficient
photon
utilization.
