Physical Chemistry Chemical Physics,
Год журнала:
2023,
Номер
25(37), С. 25280 - 25288
Опубликована: Янв. 1, 2023
A
diketopyrrolopyrrole
(DPP)
and
perylene
diimide
(PDI)-based
molecule,
denoted
as
PDI-DPP-PDI,
was
investigated
an
electron
acceptor
material
in
bulk
heterojunction
(BHJ)
solar
cells,
with
poly[[4,8-bis
[5-(2-ethylhexyl)-2-thienyl]benzo[1,2-b:4,5-b']dithiophene-2,6-diyl]
[2-(2-ethyl-1-oxohexyl)thieno[3,4-b]thiophenediyl]]
(PBDTTT-CT)
donor.
The
donor
polymer
the
molecule
have
complementary
absorption
spectra,
which
is
essential
feature
for
energy
collection
organic
cells.
However,
AFM
images
indicated
presence
of
isolated
microsized
PDI-DPP-PDI
domains
along
surface
films,
reduced
power
conversion
efficiency.
Therefore,
to
improve
homogenization
film,
a
post-deposition
treatment,
solvent
vapor
annealing
(SVA),
performed
saturated
atmosphere
containing
vapour
3-10
minutes.
This
procedure
changed
optical
morphological
properties
PBDTTT-CT
:
active
layer,
resulting
increased
efficiency
values
by
more
than
2.5
times
(reaching
5.1%).
Theoretical
simulation
pointed
out
that
experimental
absorbance
band
localized
at
580
nm,
appeared
after
SVA
possibly
related
intense
simulated
maximum
572
from
pair
transitions
starting
copolymer
ending
regions
where
both
are
stacked
about
3
Å.
most
significant
natural
transition
orbitals
(NTOs)
these
charge
transfer
character.
Moreover,
analyses
carried
spectrum
density
(PDS)
acquired
SVA-treated
film
region
larger
frequencies,
across
length
scale
around
30-70
additional
fractal
Ds
0.95,
indicating
flattened
region,
changes
overall
conformation
treatment.
indicates
improvement
molecular
packing,
not
observed
as-cast
film.
force
curve
spectroscopy
adhesion
forces
treatment;
this
enhanced
interfacial
interaction
top
electrodes,
reflecting
improved
extraction
photovoltaic
device.
Journal of Materials Chemistry A,
Год журнала:
2023,
Номер
11(48), С. 26393 - 26425
Опубликована: Янв. 1, 2023
This
review
highlights
key
features
of
PDA-NFA:
molecular
design,
diverse
grafting
sites,
advanced
synthesis,
morphology
control,
and
optimized
device
performance.
provides
a
vision
for
high-performance
PDA-NFA
NF-OSCs.
ACS Applied Energy Materials,
Год журнала:
2019,
Номер
2(2), С. 1229 - 1240
Опубликована: Янв. 4, 2019
Herein
we
study
the
effects
of
borane
incorporation
in
a
perylene
diimide
(PDI)-based
non-fullerene
acceptor
(NFA).
We
have
previously
demonstrated
that
PDI-bithiophene-PDI
((PDI)2Th2)
compound
can
be
synthesized
via
direct
(hetero)arylation
techniques
and
is
easily
modified
to
incorporate
phosphole
bithiophene
core
((PDI)2Th2PO)
tune
electronic
geometric
properties.
In
this
work,
analogue
((PDI)2Th2B)
organoboron
moiety
heavily
influences
optical,
electronic,
To
determine
functionalization
on
device
performance,
green
solvent
solution-processed
bulk-heterojunction
solar
cells
were
fabricated
using
medium-gap
donor
polymer
TTFQx-T1
each
PDI
as
NFA,
respectively.
Devices
with
new
borane-containing
provided
highest
efficiency,
more
than
twice
for
other
compounds,
which
was
attributed
highly
twisted
structure
allowing
favorable
active-layer
morphology
formed.
Journal of Materials Chemistry A,
Год журнала:
2021,
Номер
9(44), С. 24729 - 24758
Опубликована: Янв. 1, 2021
This
article
reviews
the
mechanisms
of
morphology
evolution
bulk
heterojunction
(BHJ)
films,
recent
research
progress
for
control
nonfullerene-based
BHJs,
and
coating
techniques
producing
scalable
BHJs.
Colorants,
Год журнала:
2023,
Номер
2(1), С. 151 - 178
Опубликована: Март 21, 2023
This
work
covers
the
development
of
non-fullerene
acceptors
for
use
in
organic
photovoltaics
built
using
N-annulated
perylene
diimide
dye.
The
classic
dye
has
been
extensively
used
to
construct
acceptors,
leading
device
power
conversion
efficiencies
over
10%.
Strong
visible
light
absorption
and
deep
frontier
molecular
energy
levels
have
made
such
materials
(both
polymeric)
near
ideal
pairing
with
narrow-gap
conjugated
polymers
bulk-heterojunction
active
layers.
N-annulation
provides
an
extra
site
side-chain
engineering
alters
electronic
structure
polycyclic
aromatic
core.
In
addition,
allows
selective
bromination
core,
building
blocks
that
are
useful
construction
large
frameworks
atom-economical
direct
heteroarylation
cross-coupling
method.
Herein,
we
detail
a
series
molecules
developed
by
our
team
based
on
form
dimers
different
cores
electron-rich
electron-deficient);
varied
side
chains;
tetramers
varying
geometries;
large,
asymmetric
internal
cascades.
these
as
photovoltaic
devices
(binary
ternary
blends,
outdoor
indoor
applications,
spin-coated
vs.
slot-die-coated
photoactive
layers)
is
presented.
New Journal of Chemistry,
Год журнала:
2019,
Номер
43(26), С. 10442 - 10448
Опубликована: Янв. 1, 2019
The
addition
of
donor
or
acceptor
type
molecular
semiconductors
to
PBDB-T:PC60BM
based
organic
photovoltaics
leads
increases
in
open
circuit-voltages
and
overall
power
conversion
efficiencies.
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.
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.
