Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 3, 2025
Abstract
The
rapid
expansion
of
the
Internet
Things
demands
low‐power
devices
that
integrate
memory,
sensors,
and
logic
functions.
Perovskite
materials
show
promise
for
optoelectronic
memristors;
however,
challenges
such
as
nonuniform
trap
distribution
uncontrolled
filament
formation
hinder
their
resistive
switching
performance.
To
overcome
these
issues,
a
TiO
2
nanofilm
via
atomic
layer
deposition
base
formation,
is
introduced.
This
passivates
interfacial
defects
by
forming
strong
chemical
interactions
with
Pb
2+
I
−
ions
at
perovskite
interface,
significantly
reducing
densities
(interface
density
decreases
15‐fold
to
3.0
×
10
16
cm
−3
,
bulk
1.8
14
).
Improved
energy
band
alignment
enables
efficient
electron
transport,
yielding
low‐
V
SET
(+0.24
V)
excellent
(≈0.7
µW)
nonvolatile
memory
Additionally,
device
reliably
detects
near‐infrared
illumination
an
optical
input
reconfigurable
image
recognition
using
5
array
under
combined
stimuli.
It
also
facilitates
implementation
complex
gates,
AND,
OR,
flip‐flops.
paper
demonstrates
potential
integrating
sensing,
functionalities
into
single
through
incorporation
nanolayer.
Nanomaterials,
Год журнала:
2023,
Номер
13(6), С. 991 - 991
Опубликована: Март 9, 2023
In
optoelectronic
applications,
all-Brominated
inorganic
perovskite
CsPbBr3
solar
cells
have
received
a
great
deal
of
attention
because
their
remarkable
stability
and
simplicity
production.
Most
the
solvents
used
in
are
toxic,
which
primarily
hinders
commercialization
products.
this
review,
we
introduce
crystal
structure
fundamental
properties
materials
device
cells,
summarize
research
progress
green
for
PSCs
recent
years
from
mono-green
solvent
systems
to
all-green
systems,
discuss
approaches
improving
PCE
PSCs,
intending
facilitate
sustainable
development
cells.
Finally,
survey
future
area
Advanced Materials,
Год журнала:
2023,
Номер
35(51)
Опубликована: Июль 29, 2023
The
unavoidably
positively
and
negatively
charged
defects
at
the
interface
between
perovskite
electron
transport
layer
(ETL)
often
lead
to
severe
surface
recombination
unfavorable
energy
level
alignment
in
inverted
solar
cells
(PerSCs).
Inserting
interlayers
this
is
an
effective
approach
eliminate
defects.
Herein,
macrocyclic
molecule
valinomycin
(VM)
with
multiple
active
sites
of
─C═O,
─NH,
─O─
employed
as
interlayer
perovskite/ETL
contact
simultaneously
Combined
a
series
theoretical
calculations
experimental
analyzes,
it
demonstrated
that
─C═O
groups
VM
can
immobilize
uncoordinated
Pb2+
manage
defect
formation
N─H···I
hydrogen
bonding
recompense
formamidine
vacancies
defect.
In
addition,
induces
favorable
downshift
band
bending
interface,
facilitating
charge
separation
boosting
transfer.
Thanks
reduced
alignment,
fabricated
PerSC
delivers
outstanding
power
conversion
efficiency
24.06%
excellent
long-term
ambient
thermal
stability.
This
work
demonstrates
managing
via
functional
regulating
reliable
strategy
boost
performance
PerSCs.
Advanced Functional Materials,
Год журнала:
2023,
Номер
34(4)
Опубликована: Окт. 19, 2023
Abstract
Considering
the
high
surface
defects
of
polycrystalline
perovskite,
chemical
passivation
is
effective
in
reducing
defects‐associated
carrier
losses.
However,
challenges
remain
promoting
effects
without
compromising
carrier‐extraction
yield
at
perovskite
interfaces.
In
this
work,
interlayer
molecules
functionalized
with
different
side
groups
are
rationally
designed
to
investigate
correlation
between
defect‐passivation
strength
and
interfacial
dynamics.
It
revealed
that
Cl‐grafted
impose
destructive
on
structure
due
its
lower
electronegativity
mismatched
spatial
configuration.
The
introduction
cyanide
(CN)
as
a
group
also
leads
deformation
unfavorable
hole
collection.
After
molecular
optimization,
incorporation
carbonyl
(C═O)
(TPA─O)
simultaneously
promotes
carrier‐collection
well
sufficient
defect
passivation.
As
consequence,
devices
based
TPA─O
champion
PCE
23.25%,
along
remarkable
stability
by
remaining
above
88.5%
initial
performance
after
2544
h
storage
air.
Furthermore,
TAP─O
enables
flexible
achieve
efficiency
21.81%
promising
mechanical
stability.
This
work
paves
way
for
further
improving
solar
cells.
Advanced Materials,
Год журнала:
2024,
Номер
36(21)
Опубликована: Фев. 14, 2024
Oxygen
is
difficult
to
be
physically
removed.
will
excited
by
light
form
free
radicals
which
further
attack
the
lattice
of
perovskite.
The
stabilization
α-FAPbI
Advanced Materials,
Год журнала:
2024,
Номер
36(33)
Опубликована: Июнь 17, 2024
Carbon-based
perovskite
solar
cells
(C-PSCs)
have
the
advantages
of
low-cost
and
high-stability,
but
their
photovoltaic
performance
is
limited
by
severe
defect-induced
recombination
low
hole
extraction
efficiency.
1D
proven
to
effectively
passivate
defects
on
surface,
therefore
reducing
non-radiative
loss.
However,
unsuitable
energy
level
most
renders
an
undesired
downward
band
bending
for
3D
perovskite,
resulting
in
a
high
barrier
reduced
Therefore,
rational
design
selection
perovskites
as
modifiers
are
essential
balancing
defect
passivation
extraction.
In
this
work,
based
simulation
calculations,
thiocholine
iodide
(TchI)
selected
prepare
with
work
function
then
constructs
TchPbI
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(26)
Опубликована: Апрель 25, 2024
Abstract
Tandem
solar
cells
combining
perovskite
and
silicon
have
witnessed
rapid
development
in
recent
years.
However,
the
top
cell,
utilizing
wide‐bandgap
as
absorbers
generally
suffer
significant
open‐circuit
voltage
(
V
OC
)
deficit,
particularly
for
inorganic
perovskite,
which
poses
a
considerable
obstacle
to
enhancing
power
conversion
efficiency
(PCE).
Here,
modulation
strategy
by
using
2,6‐pyridinedicarboxamide
(PC),
crystallization
kinetics
of
film
can
be
effectively
regulated,
specifically
manifested
relatively
longer
annealing
time
air,
resulting
sufficient
growth
grains.
Additionally,
PC
situ
passivate
uncoordinated
Pb
2+
,
suppressing
non‐radiative
recombination
charge
carriers.
Eventually,
record
PCE
22.07%
is
achieved
based
on
n–i–p
(IPSCs),
also
demonstrate
highest
above
1.34
(1.71
eV
bandgap).
More
importantly,
unencapsulated
IPSCs
show
enhanced
thermal
stability
photostability.
Furthermore,
are
applied
perovskite/silicon
tandem
(IPTSCs),
27.27%
an
impressive
2.024
obtained.
