Recent Progress of Solution‐Processed Thickness‐Insensitive Cathode Interlayers for High‐Performance Organic Solar Cells
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 5, 2025
Abstract
Organic
solar
cells
(OSCs)
have
shown
great
applications
potential
in
flexible/wearable
electronics,
indoor
photovoltaics
and
so
on.
The
efficiencies
of
single‐junction
OSCs
exceeded
19%,
making
the
commercialization
brighter.
Large‐area
printing
fabrication
is
a
key
way
to
OSCs,
solution‐processed
thickness‐insensitive
cathode
interlayers
(CILs)
are
urgently
needed
for
large‐area
fabrication.
High
electron
mobility
interfacial
materials
(CIMs)
critical
enable
CILs.
N‐type
self‐doped
characteristics
can
endow
organic
CIMs
with
high
mobility.
Different
type
n‐type
show
different
applicability
conventional
inverted
OSCs.
External
dopants
further
increase
hybrid
blends.
Particularly,
ZnO
doped
dyes
achieve
superior
photoconductivity
This
review
focuses
on
CILs
high‐performance
In
small
molecules
polymers,
external
n‐doped
blends
as
summarized.
small‐molecular
electrolytes
polyelectrolytes,
PEI‐/PEIE‐based
(including
organic‐organic
ZnO‐organic)
summarized
relationships
between
particular
functions
chemical
structures
highlighted.
Finally,
summary
outlook
provided.
Язык: Английский
Improving the Performance of Ternary Organic Solar Cells via Optimizing Molecular Orientation and 3D Charge Transport
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 20, 2025
Abstract
Recently,
through
in‐depth
investigations
of
ternary
organic
solar
cells
(OSCs),
scientists
have
discovered
that
small
molecules
(SMs)
with
edge‐on
orientation
serving
as
the
third
component
can
boost
transverse
charge
transport
and
consequently
enhance
device
performance.
Nevertheless,
little
research
has
been
conducted
on
determining
how
to
select
an
appropriate
improve
3D
transport.
Herein,
four
SMs
are
designed
by
gradually
increasing
quantity
alkyl
thiophene
π‐bridge
adjust
their
crystallinity
orientation.
The
resulting
show
similar
but
different
crystalline
degrees,
due
complex
effects
molecular
steric
hindrance
extended
conjugation.
After
introduction
SMs,
most
devices
exhibited
a
pronounced
improvement
in
power
conversion
efficiencies
(PCEs)
than
control
binary
counterparts.
An
elegant
PCE
19.02%
fill
factor
approaching
80%
collected
OSCs.
A
balanced
bimodal
mechanism
is
proposed
effectively
elucidated
blend
film,
enabling
charges
bypass
interfering
domains
thereby
This
provides
guidance
for
development
SM
components
form
percolation
paths
facilitate
subsequently
performance
devices.
Язык: Английский
Medium‐Bandgap Acceptors for Efficient Ternary Organic Solar Cells Achieved by End‐Group Engineering
Solar RRL,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 18, 2025
The
ternary
strategy
has
been
evidenced
as
one
of
the
most
crucial
methods
to
improve
photovoltaic
performance
organic
solar
cells.
However,
selection
and
design
third
components
are
decisive
factors
facilitating
progress
cells
(TOSCs).
In
this
study,
focuses
concentrated
on
D18‐Cl:N3
binary
host
device
by
developing
a
weakly
electron‐withdrawing
end
group
synthesizing
guest
acceptor,
BTP‐CM,
which
holds
similar
backbone
N3.
structure
resemblance
ensures
good
compatibility
molecule
with
N3,
improves
charge
transport
reduces
recombination.
Thereby,
D18‐Cl:N3:BTP‐CM‐based
TOSC
exhibits
an
improved
power
conversion
efficiency
18.32%,
compared
17.13%
device.
This
work
provides
effective
for
acceptors,
aims
introduce
new
groups
obtain
molecules
complementary
absorptions
matched
energy
levels
while
preserving
molecular
acceptor.
Язык: Английский
Organic Solar Cells Based on Non‐Fullerene Low Molecular Weight Organic Semiconductor Molecules
ChemSusChem,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 6, 2024
Abstract
The
development
of
narrow
bandgap
A‐D‐A‐
and
ADA′DA‐type
non‐fullerene
small
molecule
acceptors
(NFSMAs)
along
with
donors
(SMDs)
have
led
to
significant
progress
in
all‐small
organic
solar
cells.
Remarkable
power
conversion
efficiencies,
nearing
the
range
17–18
%,
been
realized.
These
efficiency
values
are
on
par
those
achieved
OSCs
based
polymeric
donors.
commercial
application
photovoltaic
technology
requires
design
more
efficient
conjugated
acceptors.
In
recent
years
precise
tuning
optoelectronic
properties
has
attracted
considerable
attention
contributed
greatly
advancement
all‐SM‐OSCs.
Several
reviews
published
this
field,
but
focus
review
concerns
advances
research
using
SMDs
NFSMAs
from
2018
present.
covers
made
binary
ternary
OSCs,
effects
solid
additives
performance
all‐SM‐OSCs,
recently
developed
layer‐by‐layer
deposition
method
for
these
OSCs.
Finally,
we
present
our
perspectives
a
concise
outlook
further
all‐SM‐OSCs
their
application.
Язык: Английский
Effect of π-Bridge Ring Fusion on the Wide-Bandgap Donor and Its Application for High-Efficiency All Small-Molecule Tandem Solar Cells
ACS Applied Energy Materials,
Год журнала:
2024,
Номер
7(11), С. 5005 - 5017
Опубликована: Май 28, 2024
The
fused
thiophene
derivative
as
a
π-bridged
moiety
affects
optical/electrochemical
properties,
intermolecular
packing,
and
charge
carrier
transporting
behavior
in
small
molecule
(SM)
donor.
In
this
work,
we
developed
wide-bandgap
SM
donors,
SM1
to
SM4,
containing
different
π-extended
conjugation
bridges
successfully
utilized
them
for
all
organic
solar
cells
(ASM
OSCs).
By
replacing
the
π-bridge
from
nonfused
fully
fused,
light
absorption
frontier
molecular
orbital
properties
were
modulated
due
effectively
changing
interaction
with
π-lengths.
dithieno[3,2-b:2′,3′-d]thiophene
bridge-based
SM4
shows
superior
planar
geometry.
When
incorporating
PC71BM
an
acceptor,
ASM
OSC
achieves
remarkable
VOC
of
0.97
V
FF
75%.
Moreover,
was
applied
bottom
cell
on
tandem
device
because
exhibits
strong
short-wavelength
efficient
transport/collection,
attaining
highest
efficiency
17.25%
reported
OSCs
literature
so
far.
These
results
demonstrate
that
solution-processed
is
excellent
candidate,
engineering
optimizes
physicochemical
single-
double-junction
OSCs.
Язык: Английский