Angewandte Chemie,
Год журнала:
2024,
Номер
136(18)
Опубликована: Март 9, 2024
Abstract
The
hole‐transporting
material
(HTM),
poly
(3,4‐ethylene
dioxythiophene)
poly(styrene
sulfonate)
(PEDOT
:
PSS),
is
the
most
widely
used
in
realization
of
high‐efficiency
organic
solar
cells
(OSCs).
However,
stability
PEDOT
PSS‐based
OSCs
quite
poor,
arising
from
its
strong
acidity
and
hygroscopicity.
In
addition,
PSS
has
an
absorption
infrared
region
high
highest
occupied
molecular
orbital
(HOMO)
energy
level,
thus
limiting
enhancement
short‐circuit
current
density
(
J
sc
)
open‐circuit
voltage
V
oc
),
respectively.
Herein,
two
asymmetric
self‐assembled
molecules
(SAMs),
namely
BrCz
BrBACz,
were
designed
synthesized
as
HTM
binary
based
on
well‐known
system
PM6
Y6,
eC9,
L8‐BO,
D18
eC9.
Compared
with
BrCz,
BrBACz
shows
larger
dipole
moment,
deeper
work
function
lower
surface
energy.
Moreover,
not
only
enhances
photon
harvesting
active
layer,
but
also
minimizes
losses
well
improves
interface
charge
extraction/
transport.
Consequently,
eC9‐based
OSC
using
exhibits
a
champion
efficiency
19.70
%
remarkable
29.20
mA
cm
−2
0.856
V,
which
record
for
so
far.
unencapsulated
device
maintains
95.0
original
after
1,000
hours
storage
at
air
ambient,
indicating
excellent
long‐term
stability.
Advanced Energy Materials,
Год журнала:
2023,
Номер
13(39)
Опубликована: Сен. 5, 2023
Abstract
Semitransparent
photovoltaic
(STPV)
solar
cells
offer
an
immense
opportunity
to
expand
the
scope
of
photovoltaics
special
applications
such
as
windows,
facades,
skylights,
and
so
on.
These
new
opportunities
have
encouraged
researchers
develop
STPVs
using
traditional
thin‐film
cell
technologies
(amorphous‐Si,
CdTe,
CIGS
or
emerging
(organic,
perovskites,
dye‐sensitized).
There
are
considerable
improvements
in
both
power
conversion
efficiency
(PCE)
semitransparency
these
STPV
devices.
This
review
studies
device
structure
state‐of‐the‐art
devices
thereby
analyzes
different
approaches
toward
maximizing
product
PCE
average
visible
transmittance.
The
origins
losses
during
opaque‐to‐semitransparent
transition
discussed.
In
addition,
critical
practical
aspects
relevant
all
devices,
compatibility
top
transparent
electrode
with
structure,
buffer
layer
optimization,
light
management
engineering,
scale‐up,
stability,
also
reported.
overview
is
expected
facilitate
across
identify
overcome
challenges
achieving
higher
utilization
efficiencies
STPVs.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(19)
Опубликована: Март 10, 2024
Abstract
Se‐functionalized
small
molecule
acceptors
(SMAs)
exhibit
unique
advantages
in
constructing
materials
with
near‐infrared
absorption,
but
their
photovoltaic
performance
lags
behind
that
of
S‐containing
analogs
organic
solar
cells
(OSCs).
Herein,
two
new
Se‐containing
SMAs,
namely
Se‐EH
and
Se‐EHp,
are
designed
synthesized
by
regulating
bifurcation
site
outer
alkyl
chain,
which
enables
Se‐EHp
to
form
different
3D
crystal
frameworks
from
CH1007.
displays
tighter
π–π
stacking
denser
packing
framework
smaller‐sized
pore
structure
induced
larger
steric
hindrance
effect
chain
branched
at
2‐position,
a
higher
dielectric
constant
PM6:Se‐EH
active
layer
can
be
obtained.
OSCs
based
on
achieved
very
high
PCEs
18.58%
binary
19.03%
ternary
devices
FF
approaching
80%
for
SMAs.
A
more
significant
adjusts
the
molecular
crystallization
favorable
nanofiber
interpenetrating
network
an
appropriate
domain
size
reduce
rate
sub‐ns
recombination
promote
balanced
transport
carriers.
This
work
provides
references
further
design
development
highly
efficient
Chemical Society Reviews,
Год журнала:
2024,
Номер
53(14), С. 7426 - 7454
Опубликована: Янв. 1, 2024
Over
the
past
decades,
field
of
organic
solar
cells
(OSCs)
has
witnessed
a
significant
evolution
in
materials
chemistry,
which
resulted
remarkable
enhancement
device
performance,
achieving
efficiencies
over
19%.
The
photoactive
layer
OSCs
play
crucial
role
light
absorption,
charge
generation,
transport
and
stability.
To
facilitate
scale-up
OSCs,
it
is
imperative
to
address
photostability
these
electron
acceptor
donor
materials,
as
their
photochemical
degradation
process
remains
challenge
during
photo-to-electric
conversion.
In
this
review,
we
present
an
overview
development
emphasizing
aspects
chemical
stability
behavior
that
are
linked
OSCs.
Throughout
each
section,
highlight
pathways
for
link
degradation.
We
also
discuss
existing
interdisciplinary
challenges
obstacles
impede
photostable
materials.
Finally,
offer
insights
into
strategies
aimed
at
enhancing
future
directions
developing
photo-active
layers,
facilitating
commercialization
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 22, 2024
Abstract
Solution‐processed
bulk
heterojunction
(BHJ)
organic
solar
cells
(OSCs)
have
emerged
as
a
promising
next‐generation
photovoltaic
technology.
In
this
emerging
field,
there
is
growing
trend
of
employing
solid
additives
(SAs)
to
fine‐tune
the
BHJ
morphology
and
unlock
full
potential
OSCs.
SA
engineering
offers
several
significant
benefits
for
commercialization,
including
ability
i)
control
film‐forming
kinetics
expedite
high‐throughput
fabrication,
ii)
leverage
weak
noncovalent
interactions
between
materials
enhance
efficiency
stability
OSCs,
iii)
simplify
procedures
facilitate
cost‐effective
production
scaling‐up.
These
features
make
key
catalyst
accelerating
development
Recent
breakthroughs
shown
that
can
achieve
an
19.67%
in
single‐junction
demonstrating
its
effectiveness
promoting
commercialization
devices.
This
review
provides
comprehensive
overview
pivotal
contributions
SAs,
focusing
on
their
roles
governing
dynamics,
stabilizing
phase
separation,
addressing
other
crucial
aspects.
The
rationale
design
rules
SAs
highly
efficient
stable
OSCs
are
also
discussed.
Finally,
remaining
challenges
summarized,
perspectives
future
advances
offered.
Advanced Materials,
Год журнала:
2024,
Номер
36(35)
Опубликована: Июль 11, 2024
Abstract
To
boost
the
stability
of
all‐small‐molecule
(ASM)
organic
photovoltaic
(OPV)
blends,
an
insulator
polymer
called
styrene‐ethylene‐butylene‐styrene
(SEBS)
as
morphology
stabilizer
is
applied
into
host
system
small
molecules
BM‐ClEH:BO‐4Cl.
Minor
addition
SEBS
(1
mg/ml
in
solution)
provides
a
significantly
enhanced
T
80
value
15000
hours
(extrapolated),
surpassing
doping‐free
(0
mg/ml)
and
heavy
doping
(10
counterparts
(900
hours,
30
hours).
The
material
reproducibility
cost‐effectiveness
active
layer
will
not
be
affected
by
this
industrially
available
polymer,
where
power
conversion
efficiency
(PCE)
can
well
maintained
at
15.02%,
which
still
decent
for
non‐halogen
solvent‐treated
ASM
OPV.
Morphological
photophysical
characterizations
clearly
demonstrate
SEBS's
pivotal
effect
on
suppressing
degradation
donor
blend
film's
crystallization/aggregation
reorganization,
protects
exciton
dynamics
effectively.
This
work
pays
meaningful
attention
to
stability,
performs
smart
strategy
suppress
film
degradation,
releases
comprehensive
understanding
mechanism
device
performance
reduction.
Advanced Functional Materials,
Год журнала:
2023,
Номер
34(14)
Опубликована: Дек. 21, 2023
Abstract
Future
industrialization
of
organic
photovoltaics
(OPVs)
requires
OPVs’
processing
to
be
more
energy‐efficient
and
streamlined.
Currently,
only
MoO
3
PEDOT:PSS
are
commonly
used
as
the
anode
interface
layer
(AIL).
The
typically
involves
vacuum
thermal
evaporation
with
stringent
thickness
requirements.
necessitates
separate
annealing
at
temperatures
exceeding
100
°C
eliminate
moisture.
This
work
utilized
3,4,5‐trichlorobenzoic
acid
(3CBA)
AIL
material.
distinct
advantage
3CBA
over
is
in
situ
self‐assembly
eliminates
need
for
solution
processing,
evaporation,
or
annealing.
Remarkably,
OPV
devices
incorporating
PM6,
BTP‐eC9,
exhibited
a
superior
efficiency
18.2%
compared
those
(17.7%).
By
using
nonhalogenated
solvent,
o‐xylene,
meet
requirements,
achieved
an
exceptional
18.8%,
highest
reported
value
among
self‐assembled
layers.
Furthermore,
semi‐transparent
displayed
higher
PCE
AVT
values
(13.1%
25.7%)
than
their
PEDOT:
PSS
counterparts,
due
weak
absorption
AIL.
contributes
significantly
high‐throughput
production
OPVs
by
streamlining
processing.
