ACS Applied Energy Materials,
Год журнала:
2018,
Номер
unknown
Опубликована: Сен. 16, 2018
Solvent
vapor
annealing
(SVA)
of
organic
photovoltaics
(OPVs)
has
become
an
important
postdeposition
treatment,
but
current
OPV
SVA
methods
are
difficult
to
reproduce
and
neither
tunable
nor
scalable.
Herein,
it
is
shown
that
a
variable-pressure
solvent
(VP-SVA)
system
can
be
used
reproducibly
tunably
anneal
active
layers
produce
highly
controlled
film
morphologies.
We
show
VP-SVA
useful
not
only
for
the
well-studied
P3HT:PC61BM
model
system,
also
modern
based
on
nonfullerene
acceptors.
Phase
separation
material
crystallinity
precisely
tuned
by
controlling
concentration
during
process,
as
evidenced
photoinduced
force
microscopy
(PiFM)
grazing
incidence
wide-angle
X-ray
scattering
(GIWAXS).
The
results
overannealing
occurs
at
saturated
pressures,
highlighting
importance
technique.
Journal of Materials Chemistry C,
Год журнала:
2021,
Номер
9(46), С. 16391 - 16409
Опубликована: Янв. 1, 2021
This
review
presents
the
recent
advances
in
synthesis
of
organic
semiconductors
using
C–H
functionalization
and
naturally
sourced
building
blocks
to
facilitate
large-scale
production
commercialization
semiconductors.
Journal of Materials Chemistry A,
Год журнала:
2018,
Номер
6(16), С. 6874 - 6881
Опубликована: Янв. 1, 2018
A
new
nonfullerene
electron
acceptor
of
m-MeIC
was
designed
and
synthesized,
which
is
effective
with
different
band-gap
polymer
donors,
including
wide
J71,
medium
PBDB-T
low
PCE-10.
ACS Applied Energy Materials,
Год журнала:
2018,
Номер
1(9), С. 4906 - 4916
Опубликована: Авг. 7, 2018
Three
molecular
semiconductors
are
compared
and
evaluated
in
organic
field-effect
transistors
solar
cells.
The
molecules
constructed
from
the
dyes
diketopyrrolopyrrole
(DPP),
perylene
diimide
(PDI),
N-(alkyl)benzothioxanthene-3,4-dicarboximide
(BTXI).
compound
PDI–DPP–PDI
(1)
has
previously
been
reported
used
as
a
nonfullerene
acceptor.
compounds
PDI–DPP–BTXI
(2)
BTXI–DPP–BTXI
(3)
were
synthesized
using
direct
(hetero)arylation
methods
fully
identified
NMR
spectroscopy
mass
spectrometry.
All
three
characterized
UV–visible
spectroscopy,
cyclic
voltammetry,
density
functional
theory
calculations.
Increasing
BTXI
content
results
progressive
destabilization
of
electronic
energy
levels.
For
all
compounds,
no
significant
changes
optical
absorption
spectra
observed
when
to
combination
constituent
spectra.
Compound
1
exhibits
electron
transport
characteristics
functions
an
acceptor
cells
that
produce
power
conversion
efficiency
5%.
2
unbalanced
(electron
transporting
dominate)
ambipolar
charge
performs
better
3
balanced
best
donor
cell
devices.
ability
tune
charge-carrier
these
panchromatic
through
synthesis
offers
distinctive
way
create
span
range
device
performance
metrics.
Journal of Materials Chemistry C,
Год журнала:
2018,
Номер
6(8), С. 2148 - 2154
Опубликована: Янв. 1, 2018
Herein
we
report
on
the
first
successful
coupling
of
dithienophosphole
(S2PO)
functional
building
block
with
three
types
heteroaryl
end
caps
using
direct
(hetero)arylation
C–H
bond
functionalization
methods.
Molecules,
Год журнала:
2018,
Номер
23(4), С. 931 - 931
Опубликована: Апрель 17, 2018
Herein
we
report
on
the
synthesis
of
an
N-annulated
perylene
diimide
(PDI)
disubstituted
thieno[3,4-c]pyrrole-4,6-dione
(TPD)
molecular
acceptor
(PDI–TPD–PDI)
by
direct
heteroarylation
(DHA)
methods.
Three
sets
DHA
conditions
that
explore
effects
solvent,
temperature,
and
catalyst
were
employed
to
find
optimal
for
two
PDI–TPD–PDI
derivatives.
We
then
selected
one
use
as
a
non-fullerene
in
organic
solar
cell
devices
with
donor
polymer
PBDB-T.
Active
layer
bulk-heterojunction
blends
modified
using
several
post-deposition
treatments,
including
thermal
annealing,
solvent
vapour
high
boiling
additives.
It
was
found
active
layers
cast
from
o-dichlorobenzene
3%
v/v
diphenylether
additive
yielded
films
adequate
phase
separation,
subsequently
gave
best
performance,
power
conversion
efficiencies
greater
than
3%.
New Journal of Chemistry,
Год журнала:
2019,
Номер
43(13), С. 5187 - 5195
Опубликована: Янв. 1, 2019
A
systematic
structure–property-function
evaluation
of
four
structurally
related
organic
photoactive
materials
based
on
the
perylene
diimide
chromophore.
Journal of Materials Chemistry C,
Год журнала:
2021,
Номер
9(45), С. 16078 - 16109
Опубликована: Янв. 1, 2021
Diketopyrrolopyrroles
stand
out
due
to
their
chemical
and
optoelectronic
properties.
Diketopyrrolopyrrole-single
molecules
applied
in
organic,
dye-sensitized
perovskite
solar
cells
are
presented
give
clues
for
future
molecular
optimizations.
To
highlight
the
benefits
of
organic
dye
PDI‐DPP‐PDI
for
use
in
fullerene‐free
solar
cells,
herein
is
demonstrated
how
this
material
can
meet
scalability
demands
through
a
multigram
scale
direct
heteroarylation
coupling
reaction,
and
performance
post‐deposition
solvent
vapor
annealing
treatment.
A
method
has
been
utilized
to
screen
comprehensive
selection
ethereal,
aromatic,
chlorinated
solvents.
Upon
transitioning
these
eight
alternative
solvents,
significant
increase
over
chloroform
standard
noted
all
with
tetrahydrofuran
o
‐dichlorobenzene
leading
highest
devices
post‐treatment.
This
trend,
including
an
open‐circuit
voltage
greater
than
1
V
proved
be
consistent
four
different
BDT‐based
donor
polymers,
PTB7‐Th,
PBDB‐T,
J61,
TTFQx‐T1.
The
performing
are
achieved
PTB7‐Th
TTFQx‐T1,
PCEs
reaching
6.2
5.7%,
respectively,
when
combined
interfacial
modification
ZnO
electron‐transport
layer.
