The
development
of
inverted
all‐inorganic
perovskite
solar
cells
(PSCs)
is
limited
by
the
defect‐induced
nonradiative
recombination.
Herein,
a
strategy
to
enhance
efficiency
and
stability
p‐i‐n
type
CsPbI
2
Br
introducing
(3‐glycidyloxypropyl)trimethoxysilane
(GOPTS)
into
precursor
solution
reported.
incorporation
GOPTS
significantly
reduces
voids
grain
boundaries
in
films
fabricated
at
low
temperatures
(150
°C).
alkoxy,
epoxy,
ether
groups
effectively
passivate
uncoordinated
Pb,
diminishing
recombination
centers
associated
with
defects.
Density
functional
theory
simulations
suggest
that
increases
vacancy
formation
energies
Cs
I,
leading
reduced
Furthermore,
mitigates
photoinduced
phase
segregation
further
enhances
performance
PSCs.
This
modification
results
an
increase
power
conversion
cells,
from
11.83%
13.32%,
when
self‐assembled
monolayers
are
used
as
hole
transport
layer.
study
underscores
potential
silane‐based
additives
defect
passivation
for
perovskites,
providing
viable
route
advancement
high‐efficiency
cells.
Polymers,
Год журнала:
2024,
Номер
16(11), С. 1478 - 1478
Опубликована: Май 23, 2024
Here,
we
report
the
preparation
and
evaluation
of
PVA/PEDOT:PSS-conducting
hydrogels
working
as
channel
materials
for
OECT
applications,
focusing
on
understanding
their
charge
transport
transfer
properties.
Our
conducting
are
based
crosslinked
PVA
with
PEDOT:PSS
interacting
via
hydrogen
bonding
exhibit
an
excellent
swelling
ratio
~180–200%
w/w.
electrochemical
impedance
studies
indicate
that
processes
at
material
not
trivial
compared
to
polymeric
films.
The
most
relevant
feature
is
ionic
through
swollen
hydrogel
clearly
different
from
solution,
diffusion
govern
low-frequency
regime.
In
addition,
have
performed
in
operando
Raman
spectroscopy
analyses
devices
supported
by
first-principle
computational
simulations
corroborating
doping/de-doping
under
applied
gate
voltages.
maximum
transconductance
(gm~1.05
μS)
volumetric
capacitance
(C*~2.3
F.cm−3)
values
these
can
be
promising
candidates
devices.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Сен. 1, 2024
Abstract
A
method
for
the
characterization
of
organic
electrochemical
transistors
(OECTs)
based
on
small
signal
analysis
is
presented
that
allows
to
determine
electronic
mobility
as
a
function
continuous
gate
potential
using
standard
two-channel
AC
potentiostat.
Vector
in
frequency
domain
exclude
parasitic
components
both
ionic
and
conduction
regardless
film
thickness,
thus
resulting
deviation
low
4%.
Besides
mobility,
OECTs
also
provides
information
about
wide
range
other
parameters
including
conductance,
transconductance,
conductivity
volumetric
capacitance
through
single
measurement.
General
applicability
demonstrated
by
characterizing
devices
n-type,
p-type,
ambipolar
materials
operating
accumulation
or
depletion
modes.
Accurate
benchmarking
mixed
ionic-electronic
conductors
can
be
anticipated
guide
development
design
bioelectronic
devices.
The Journal of Physical Chemistry C,
Год журнала:
2024,
Номер
128(43), С. 18612 - 18621
Опубликована: Окт. 18, 2024
The
electronic
and
optical
properties
of
conductive
polymers
(CPs)
are
related
to
the
formation
polarons
bipolarons
localized
along
polymer
backbone.
Their
concentration
is
affected
by
conformational
morphological
features
CPs,
making
it
crucial
understand
how
they
chain
conformation
π-electron
delocalization.
In
this
work,
we
studied
modulation
in
PEDOT:PSS
after
post-treatment
with
hydrazine
H2SO4,
which
influence
properties.
Through
a
combination
electron
spin
resonance
spectroscopy,
UV–vis–NIR
Raman
conductivity
measurements,
evaluate
changes
PEDOT,
delocalization
within
We
present
experimental
evidence
supporting
recently
revised
interpretation
spectrum
PEDOT:PSS,
through
theoretical
analysis,
propose
new
PEDOT:PSS.
Furthermore,
provide
first
presence
polaron
pairs
triplet
state
have
S
=
1,
were
only
predicted
theoretically
up
point.
Sensors,
Год журнала:
2023,
Номер
24(1), С. 104 - 104
Опубликована: Дек. 25, 2023
The
performance,
stability,
and
lifespan
of
lithium-ion
batteries
are
influenced
by
variations
in
the
flow
lithium
ions
with
temperature.
In
electric
vehicles,
coolants
generally
used
to
maintain
optimal
temperature
battery,
leading
an
increasing
demand
for
humidity
sensors
that
can
prevent
leakage
short
circuits.
this
study,
were
fabricated
on
a
pouch
film
pouch-type
battery.
IDE
electrodes
screen-printed
humidity-
temperature-sensing
materials
printed
using
dispenser
process.
Changes
capacitance
Ag-CNF
sensing,
while
changes
resistance
PEDOT:PSS
sensing.
two
integrated
into
single
electrode
performance
evaluation.
sensor
exhibited
response
ΔR
≈
0.14
from
20
°C
100
20%
RH
as
reference,
ΔC
2.8
relative
80%
at
°C.
is
expected
contribute
efficient
monitoring
applications
various
batteries.
Chemical Communications,
Год журнала:
2023,
Номер
60(8), С. 988 - 991
Опубликована: Дек. 20, 2023
Delamination
of
the
electron-transporting
polymer
N2200
from
indium
tin
oxide
(ITO)
in
aqueous
electrolytes
is
mitigated
by
modifying
ITO
with
an
azide-functionalized
phosphonic
acid
(PA)
which,
upon
UV
irradiation,
reacts
polymer.
The
optical,
electrochemical,
and
spectroelectrochemical
properties
thin
films
are
retained
non-aqueous
media.
JACS Au,
Год журнала:
2024,
Номер
4(7), С. 2596 - 2605
Опубликована: Июль 3, 2024
The
accumulation
of
plastic
waste
in
the
environment
is
a
growing
environmental,
economic,
and
societal
challenge.
Plastic
upgrading,
conversion
low-value
polymers
to
high-value
materials,
could
address
this
Among
upgrading
strategies,
sulfonation
aromatic
powerful
approach
access
materials
for
range
applications,
such
as
ion-exchange
resins
membranes,
electronic
pharmaceuticals.
While
many
methods
have
been
reported,
achieving
high
degrees
while
minimizing
side
reactions
that
lead
defects
polymer
chains
remains
challenging.
Additionally,
sulfonating
agents
are
most
often
used
large
excess,
which
prevents
precise
control
over
degree
their
functionality.
Herein,
we
these
challenges
using
1,3-disulfonic
acid
imidazolium
chloride
([Dsim]Cl),
sulfonic
acid-based
ionic
liquid,
sulfonate
upgrade
materials.
We
show
stoichiometric
[Dsim]Cl
can
effectively
model
polystyrene
up
92%
yields,
with
minimal
regioselectivity
Advanced Electronic Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 4, 2024
Abstract
Organic
electrochemical
transistors
(OECTs)
have
been
proven
beneficial
for
bioelectronic
applications.
However,
the
demand
reliable
and
fast
fabrication
methods
has
not
yet
fully
met.
In
this
work,
OECTs
are
fabricated
using
direct
ink
writing
(DIW).
This
method
is
cleanroom‐free
can
be
done
without
lithography
techniques.
These
devices
characterized
benchmarked
against
spin‐coating
drop‐casting
deposition
approaches.
Response
time
as
well
product
of
carrier
charge
mobility
volumetric
capacitance
found
to
higher
DIW
approach
compared
standard
addition,
a
testing
process
designed
systematically
evaluate
operational
degradation
semiconductor
channel.
test
enables
identical
conditions
all
tested
while
providing
comparable
output.
Thicker
channels
show
better
stability,
thinner
proved
transistors.
Finally,
issues
instability
these
discussed.
The
development
of
inverted
all‐inorganic
perovskite
solar
cells
(PSCs)
is
limited
by
the
defect‐induced
nonradiative
recombination.
Herein,
a
strategy
to
enhance
efficiency
and
stability
p‐i‐n
type
CsPbI
2
Br
introducing
(3‐glycidyloxypropyl)trimethoxysilane
(GOPTS)
into
precursor
solution
reported.
incorporation
GOPTS
significantly
reduces
voids
grain
boundaries
in
films
fabricated
at
low
temperatures
(150
°C).
alkoxy,
epoxy,
ether
groups
effectively
passivate
uncoordinated
Pb,
diminishing
recombination
centers
associated
with
defects.
Density
functional
theory
simulations
suggest
that
increases
vacancy
formation
energies
Cs
I,
leading
reduced
Furthermore,
mitigates
photoinduced
phase
segregation
further
enhances
performance
PSCs.
This
modification
results
an
increase
power
conversion
cells,
from
11.83%
13.32%,
when
self‐assembled
monolayers
are
used
as
hole
transport
layer.
study
underscores
potential
silane‐based
additives
defect
passivation
for
perovskites,
providing
viable
route
advancement
high‐efficiency
cells.
