Small,
Journal Year:
2022,
Volume and Issue:
19(3)
Published: Nov. 30, 2022
Abstract
Active
layer
material
plays
a
critical
role
in
promoting
the
performance
of
an
organic
solar
cell
(OSC).
Small‐molecule
(SM)
materials
have
merits
well‐defined
chemical
structures,
few
batch‐to‐batch
variations,
facile
synthesis
and
purification
procedures,
easily
tuned
properties.
SM‐donor
non‐fullerene
acceptor
(NFA)
innovations
recently
produced
all‐small‐molecule
(ASM)
devices
with
power
conversion
efficiencies
that
exceed
17%
approach
those
their
polymer‐based
counterparts,
thereby
demonstrating
great
future
commercialization
potential.
In
this
review,
recent
progress
both
SM
donors
NFAs
to
illustrate
structure–property
relationships
various
morphology‐regulation
strategies
are
summarized.
Finally,
ASM‐OSC
challenges
outlook
discussed.
Journal of Materials Chemistry A,
Journal Year:
2022,
Volume and Issue:
10(7), P. 3255 - 3295
Published: Jan. 1, 2022
This
review
presents
the
recent
progress
in
organic
solar
cells
based
on
non-fullerene
acceptors,
with
a
wide
coverage
from
material
synthesis
and
processing
to
interface
engineering,
device
structure,
large-area
fabrication,
stability.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(37)
Published: July 20, 2022
Single-junction
organic
solar
cells
(OSCs)
have
made
significant
progress
in
recent
years.
Innovations
material
design
and
device
optimization
improved
the
power
conversion
efficiencies
to
over
19
%.
In
this
Minireview,
based
on
advances,
we
discuss
molecular
strategies
tune
absorption
spectrum,
energy
level,
intermolecular
aggregation
as
well
highlight
role
of
electrostatic
potential
decreasing
loss.
Then,
introduce
latest
four
types
OSCs
composed
different
donor:acceptor
combinations:
polymer
donor:small-molecule
acceptor,
all-polymer,
all-small-molecule,
small-molecule
donor:polymer
acceptor.
Finally,
challenges
practical
applications,
including
cost,
stability,
multi-function
integration,
are
discussed.
Chemistry - A European Journal,
Journal Year:
2021,
Volume and Issue:
28(2)
Published: Nov. 12, 2021
Chemical
structure
of
small
molecule
acceptors
determines
their
performance
in
organic
solar
cells.
Multiscale
simulations
are
necessary
to
avoid
trial-and-error
based
design,
ultimately
save
time
and
resources.
In
current
study,
the
effect
sp2
-hybridized
nitrogen
substitution
at
inner
or
outmost
position
central
core,
side
chain,
terminal
group
is
investigated
using
multiscale
computational
modelling.
Quantum
chemical
analysis
used
study
electronic
behavior.
Nitrogen
end-capping
has
significantly
decreased
electron-reorganization
energy.
No
big
change
observed
transfer
integral
excited
state
However,
good
way
improve
electron-mobility.
Power
conversion
efficiency
(PCE)
newly
designed
predicted
machine
learning.
Molecular
dynamics
also
performed
explore
acceptor
blends
with
PBDB-T
polymer
donor.
Florgy-Huggins
parameter
calculated
mixing
PBDB-T.
Radial
distribution
function
indicated
that
a
closer
packing
N3
N4.
From
all
analysis,
it
found
better
strategy
design
efficient
acceptors.
Chemical Society Reviews,
Journal Year:
2024,
Volume and Issue:
53(5), P. 2350 - 2387
Published: Jan. 1, 2024
Organic
solar
cells
(OSCs)
have
attracted
a
great
deal
of
attention
in
the
field
clean
energy
due
to
their
advantages
transparency,
flexibility,
low
cost
and
light
weight.
Introducing
them
market
enables
seamless
integration
into
buildings
windows,
while
also
supporting
wearable,
portable
electronics
internet-of-things
(IoT)
devices.
With
development
photovoltaic
materials
optimization
fabrication
technology,
power
conversion
efficiencies
(PCEs)
OSCs
rapidly
improved
now
exceed
20%.
However,
there
is
significant
lack
focus
on
material
stability
device
lifetime,
causing
severe
hindrance
commercial
applications.
In
this
review,
we
carefully
review
important
strategies
employed
improve
over
past
three
years
from
perspectives
design
engineering.
Furthermore,
analyze
discuss
current
progress
terms
air,
light,
thermal
mechanical
stability.
Finally,
propose
future
research
directions
overcome
challenges
achieving
highly
stable
OSCs.
We
expect
that
will
contribute
solving
problem
OSCs,
eventually
paving
way
for
applications
near
future.
Energy & Environmental Science,
Journal Year:
2022,
Volume and Issue:
15(4), P. 1585 - 1593
Published: Jan. 1, 2022
An
asymmetric
wide-bandgap
acceptor,
namely
AITC,
is
synthesized.
The
large
dipole
moment
of
AITC
reinforces
the
molecular
packing
in
ternary
blends.
Single-junction
and
tandem
OSCs
yielded
a
remarkable
PCE
18.8%
19.4%,
respectively.
Advanced Science,
Journal Year:
2022,
Volume and Issue:
9(23)
Published: June 16, 2022
A
novel
"N-π-N"
type
oligomeric
acceptor
of
2BTP-2F-T,
constructed
by
two
small
non-fullerene
(NFA)
units
linked
with
a
thiophene
π
bridge
is
reported.
The
2BTP-2F-T
not
only
combines
the
advantages
NFA
and
polymeric
acceptors
(PYF-T-o)
similar
but
also
exhibits
superior
characteristics
high
absorption
coefficient
electron
moblity(µ
Energy & Environmental Science,
Journal Year:
2022,
Volume and Issue:
15(10), P. 4338 - 4348
Published: Jan. 1, 2022
The
2D
asymmetric
side
chain
strategy
via
modification
with
different
halogens
can
optimize
the
morphology,
improve
molecular
interaction
and
control
photophysical
properties,
promoting
an
outstanding
PCE
of
17.0%
in
binary
ASM-OSCs.
ACS Energy Letters,
Journal Year:
2023,
Volume and Issue:
8(2), P. 1058 - 1067
Published: Jan. 23, 2023
Herein,
an
emerging
acceptor
L8-BO
as
the
third
component
was
combined
with
B1:BO-4Cl
system
for
constructing
efficient
ternary
all-small-molecule
organic
solar
cells
(ASM-OSCs).
Theoretical,
morphological,
and
crystallographic
studies
reveal
that
BO-4Cl
possess
good
compatibility,
resulting
in
alloy-like
state
formation
of
two
acceptors
blends.
The
synergistic
effect
is
conducive
to
forming
favorable
phase
separation
molecular
stacking
promoting
charge
splitting
extraction,
which
contributes
simultaneously
boosting
short-circuit
current
density
fill
factor.
Furthermore,
higher
lowest
unoccupied
orbital
energy
level
assist
ASM-OSCs
achieving
lower
voltage
loss
respect
binary
devices.
optimal
20
wt
%
deliver
a
top-level
efficiency
17.10%.
This
work
demonstrates
not
only
morphology
but
also
small
matrix
can
be
well-manipulated
by
employing
strategy.
