Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 10, 2025
Abstract
Perovskite‐organic
tandem
solar
cells
(TSCs)
possess
significant
potential
due
to
their
unique
features,
such
as
orthogonal
processing
solvents,
tunable
bandgap,
and
infinite
molecular
designs.
However,
device
performance
is
often
hindered
by
the
limited
series
current
density,
which
constrained
absorption
of
rear
organic
cell
(OSC).
Here,
a
fine‐grained
sub‐cell
matching
model
has
been
developed
that
enables
rapid
screening
material
combinations
based
on
practical
parameters.
The
indicates
increasing
thickness
OSC
layer
an
effective
approach
boost
efficiency,
while
also
reducing
manufacturing
challenges
for
large‐scale
production.
To
mitigate
charge
collection
issues
arising
from
excessive
thickness,
contact
passivation
technique
self‐assembled
monolayer
developed,
minimizes
non‐radiative
recombination
reduces
Schottky
barrier
at
interface,
enabling
more
balanced
hole‐electron
transport.
As
result,
thick‐film
(300
nm)
achieved
record‐high
efficiency
18.08%
(certified
17.80%),
enhancing
TSCs
24.31%
24.00%).
Furthermore,
large‐area
photovoltaic
module
with
exceeding
18.54%
(18.48
cm
2
)
demonstrated.
knowledge,
this
represents
first
demonstration
perovskite‐organic
TSCs.
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.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 19, 2025
Abstract
The
potential
impact
of
end‐group
(EG)
in
non‐fullerene
acceptor
(NFA)
on
enabling
green
solvent‐processable
polymer
solar
cells
(PSCs)
remains
underexplored,
offering
opportunities
for
advancements
environmentally
friendly
PSC
development.
Herein,
the
EG
1′,1′‐dicyanomethylene‐4‐fluoro‐5‐thienyl‐3‐indanone
(IC‐FT)
is
developed
by
modifying
state‐of‐the‐art
Y6
derivative
NFA,
BTP‐4F,
resulting
two
novel
NFAs,
namely
BTP‐FT
and
BTP‐2FT.
Distinctively,
this
study
reveals
that
it
noncovalent
F···S
interaction,
other
than
commonly
believed
strong
hydrogen
bonding
F···H
plays
a
key
role
determining
final
molecular
conformation,
as
confirmed
means
2D
NMR
Gibbs
free
energy
calculations.
asymmetric
possesses
an
upshifted
lowest
unoccupied
orbital
level
enhances
solubility
toluene.
Consequently,
can
mitigate
phase
separation,
promote
formation
nanofibrillar
morphology,
facilitate
exciton
dissociation,
ultimately
enhance
performance
PSCs,
achieving
high
open
circuit
voltage
0.900
V
power
conversion
efficiency
(PCE)
17.56%.
Furthermore,
ternary
blend
PM6:BTP‐FT:BTP‐4F
achieves
PCE
18.39%
devices
processed
from
This
offers
perspective
NFA
design
high‐efficiency
eco‐friendly
processable
PSCs
enriching
array
electron‐withdrawing
EGs
molecules.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 5, 2024
Abstract
Significant
advancements
in
power
conversion
efficiency
have
been
achieved
organic
solar
cells
with
small
molecule
acceptors.
However,
stability
remains
a
primary
challenge,
impeding
their
widespread
adoption
renewable
energy
applications.
This
review
summarizes
the
degradation
of
different
layers
within
device
structure
under
varying
conditions,
including
light,
heat,
moisture,
and
oxygen.
For
photoactive
layers,
chemical
pathways
polymer
donors
acceptors
are
examined
detail,
alongside
morphological
bulk
heterojunction
structure,
which
plays
crucial
role
performance.
The
mechanisms
commonly
used
anode
cathode
interlayers
electrodes
addressed,
as
these
significantly
influence
overall
stability.
Mitigation
methods
for
identified
provided
each
section
to
offer
practical
insights
improving
longevity.
Finally,
an
outlook
presents
remaining
challenges
achieving
long‐term
stability,
emphasizing
research
directions
that
require
further
investigation
enhance
reliability
performance
real‐world
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(35)
Опубликована: Июнь 14, 2024
Abstract
Low
cost
and
printing
friendly
fabrication
of
organic
solar
cells
(OSCs)
require
thick‐film
devices
with
simply
structured
photoactive
molecules.
Thus,
achieving
high
power
conversion
efficiency
(PCE)
for
non‐fused
ring
acceptor‐based
thickness
is
great
significance.
Herein,
by
transforming
traditional
blend
casting
method
to
emerging
sequential
deposition
(SD)
method,
D18:A4T‐16
active
exhibits
large
improvement
from
8.02%
14.75%
in
300
nm
thick
devices.
Systematic
morphological
photophysical
characterizations
showcase
the
effectiveness
SD
processing
sufficient
donor/acceptor
interpenetration
vertical
stratification,
which
eliminates
dilemma
charge
generation/transport
films.
Meanwhile,
D18
bottom
layer
proven
helpful
realizing
fast
evaporation
postdeposited
poor
solvent,
resulting
naturally
thickened
well‐regulated
crystallization.
Furthermore,
a
new
index
emphasize
based
on
nonfused
acceptors,
called
figure‐of‐merit‐X
(FoM‐X),
has
been
defined.
The
processed
herein,
nm,
500
800
thicknesses
possess
leading
FoM‐X
values.
Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 26, 2024
Abstract
This
5th
annual
“
Emerging
PV
Report”
highlights
the
latest
advancements
in
performance
of
emerging
photovoltaic
(e‐PV)
devices
across
various
e‐PV
research
areas,
as
documented
peer‐reviewed
articles
published
since
August
2023.
Updated
graphs,
tables,
and
analyses
are
provided,
showcasing
several
key
parameters,
including
power
conversion
efficiency,
open‐circuit
voltage,
short‐circuit
current,
fill
factor,
light
utilization
stability
test
energy
yield.
These
parameters
presented
functions
bandgap
average
visible
transmittance
for
each
technology
application
contextualized
using
benchmarks
such
detailed
balance
efficiency
limit.
