Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 9, 2025
Abstract
Memristors
based
on
perovskite
materials
demonstrate
significant
potential
for
applications
in
information
encryption
and
storage.
However,
the
stability
durability
of
their
device
structures
remain
major
challenges
commercial
deployment.
In
this
study,
Mn:CsPbCl
3
nanocrystals
capped
with
short‐chain
ligands
are
synthesized
at
a
controlled
ratio
using
an
situ
ligand
passivation
strategy.
Compared
long‐chain
ligands,
possess
higher
surface
adsorption
energy,
which
enhances
nanocrystal
size
uniformity
enables
more
effective
attachment
to
sites.
This
process
mitigates
defects
nanocrystals,
thereby
decreasing
randomness
conductive
filaments
formation
enhancing
stability.
Furthermore,
capping
improves
contact
material‐electrode
interface
correspondingly
reducing
leakage
current.
The
fabricated
Al/Mn:CsPbCl
/FTO
memristor
exhibits
good
reconfigurable
storage
behavior.
By
adjusting
compliance
current,
transition
from
non‐volatile
volatile
modes
is
successfully
achieved.
Leveraging
device's
electrical
characteristics,
binary
image
encryption,
functions
realized.
Overall,
work
demonstrates
importance
operational
memristors
provides
foundation
application
secure
transmission.
Ultraviolet
(UV)
light,
invisible
to
the
human
eye,
possesses
both
benefits
and
risks.
To
harness
its
potential,
UV
photodetectors
(PDs)
have
been
engineered.
These
devices
can
convert
photons
into
detectable
signals,
such
as
electrical
impulses
or
visible
enabling
their
application
in
diverse
fields
like
environmental
monitoring,
healthcare,
aerospace.
Wide
bandgap
semiconductors,
with
high-efficiency
light
absorption
stable
opto-electronic
properties,
stand
out
ideal
materials
for
PDs.
This
review
comprehensively
summarizes
recent
advancements
traditional
emerging
wide
bandgap-based
PDs,
highlighting
roles
imaging,
communication,
alarming.
Moreover,
it
examines
methods
employed
enhance
PD
performance,
delving
advantages,
challenges,
future
research
prospects
this
area.
By
doing
so,
aims
spark
innovation
guide
development
of
Nanoscale,
Journal Year:
2024,
Volume and Issue:
16(5), P. 2097 - 2120
Published: Jan. 1, 2024
Two-dimensional
(2D)
transition
metal
dichalcogenides
(TMDs)
have
emerged
as
a
highly
promising
platform
for
the
development
of
photodetectors
(PDs)
owing
to
their
remarkable
electronic
and
optoelectronic
properties.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
36(13)
Published: Dec. 20, 2023
Metal
halide
perovskite
films
have
gained
significant
attention
because
of
their
remarkable
optoelectronic
performances.
However,
poor
stability
upon
the
severe
environment
appears
to
be
one
main
facets
that
impedes
further
commercial
applications.
Herein,
a
method
improve
flexible
photodetectors
under
water
and
humidity
without
encapsulation
is
reported.
The
devices
are
fabricated
using
physical
vapor
deposition
(Pulse
Laser
Deposition
&
Thermal
Evaporation)
high-vacuum
conditions.
An
amorphous
organic
Rubrene
film
with
low
molecular
polarity
high
elastic
modulus
serves
as
both
protective
layer
hole
transport
layer.
After
immersed
in
for
6000
min,
photoluminescence
intensity
attenuation
only
decreased
by
maximum
10%.
demonstrator
device,
based
on
Rubrene/CsPbBr
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(5), P. 4131 - 4139
Published: Jan. 11, 2024
Intensive
research
on
optoelectronic
memory
(OEM)
devices
based
two-dimensional
(2D)
van
der
Waals
heterostructures
(vdWhs)
is
being
conducted
due
to
their
distinctive
advantages
for
electrical–optical
writing
and
multilevel
storage.
These
features
make
OEM
a
promising
candidate
the
logic
of
reconfigurable
operations.
However,
realization
nonvolatile
with
broadband
absorption
(from
visible
infrared)
high
switching
ratio
remains
challenging.
Herein,
we
report
heterostructure
consisting
rhenium
disulfide
(ReS2),
hexagonal
boron
nitride
(hBN)
tellurene
(2D
Te).
The
2D
Te-based
floating-gate
(FG)
device
exhibits
excellent
performance
metrics,
including
on/off
(∼106),
significant
endurance
(>1000
cycles)
impressive
retention
(>104
s).
In
addition,
narrow
band
gap
Te
endows
optical
programmability
from
near-infrared
regions
at
room
temperature.
Moreover,
by
applying
different
gate
voltages,
light
wavelengths,
laser
powers,
multiple
bits
can
be
successfully
generated.
Additionally,
specifically
designed
enable
inverter
circuits
(including
AND
OR
gates)
through
controlled
electrical
inputs.
findings
demonstrate
that
vdWhs
FG
are
valuable
approach
in
development
high-performance
devices.
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
17(1)
Published: Sept. 30, 2024
Abstract
The
rapid
advancement
of
nanotechnology
has
sparked
much
interest
in
applying
nanoscale
perovskite
materials
for
photodetection
applications.
These
are
promising
candidates
next-generation
photodetectors
(PDs)
due
to
their
unique
optoelectronic
properties
and
flexible
synthesis
routes.
This
review
explores
the
approaches
used
development
use
devices
made
different
architectures,
including
quantum
dots,
nanosheets,
nanorods,
nanowires,
nanocrystals.
Through
a
thorough
analysis
recent
literature,
also
addresses
common
issues
like
mechanisms
underlying
degradation
PDs
offers
perspectives
on
potential
solutions
improve
stability
scalability
that
impede
widespread
implementation.
In
addition,
it
highlights
encompasses
detection
light
fields
dimensions
other
than
intensity
suggests
avenues
future
research
overcome
these
obstacles
fully
realize
state-of-the-art
systems.
provides
comprehensive
overview
guides
efforts
towards
improved
performance
wider
applicability,
making
valuable
resource
researchers.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 13, 2025
Abstract
Ultraviolet
band
C
photodetectors
(UVC
PDs),
which
can
convert
the
UVC
light
(200–280
nm)
signals
into
detectable
signals,
have
received
tremendous
attention
due
to
their
wide
applications
in
bio‐medicine,
communications,
and
imaging
fields.
However,
current
research
primarily
focuses
on
either
conversion
of
electrical
or
its
visible
signals.
Here,
a
flexible
dual‐detectable
PD
based
Ca
2
Nb
3
O
10
nanosheets
CsCu
I
film
is
reported,
simultaneously
achieving
visual
detection
for
invisible
light.
The
exhibits
exceptional
self‐powered
(270
nm;
1.87
mW
cm
−2
)
abilities
with
high
responsivity
(R)
16.7
mA
W
−1
,
an
impressive
detectivity
6.1
×
11
Jones,
on/off
ratio
3789,
ultra‐high
UVC/UVA
(R
270
/R
360
rejection
2.1
5
.
shows
great
application
potential
safety
communication
real‐time
imaging.
This
work
proposes
new
type
through
material
selection
structural
design,
thereby
inspiring
novel
ideas
enhance
convenience
practicality
photodetection.
Abstract
Low‐dimensional
van
der
Waals
materials
(vdWMs)
have
attracted
worldwide
interest
on
account
of
numerous
advantages
including
self‐passivated
surface,
high
carrier
mobility,
excellent
flexibility,
etc
.
Among
multiple
vdWMs,
Sb
2
Se
3
stands
out
due
to
its
light
absorption
coefficient,
environmentally
friendly
components,
stability,
and
abundant
reserve.
However,
limited
effective
wavelength
range
unscalable
preparation
been
obstinate
issues
standing
in
the
way
further
development.
Herein,
pulsed‐laser
deposition
(PLD)
has
developed
for
synthesizing
nanofilms,
wafer‐scale
realized.
The
PLD‐derived
photodetector
demonstrates
broadband
photoresponse
across
UV
NIR.
First‐principles
calculations
determined
that
this
is
because
formation
vacancies
can
result
a
reduction
bandgap.
Upon
635
nm
illumination,
an
optimal
responsivity
2.68
A
W
−1
achieved,
corresponding
external
quantum
efficiency
524%
specific
detectivity
1.34
×
10
12
Jones.
Furthermore,
device
manifests
short
response/recovery
time
≈2/1
ms.
Proof‐of‐concept
imaging
as
well
fitness
monitoring
(respiratory
rate
&
heart
rate)
Profited
from
scalable
preparation,
array
photodetectors
produced,
exhibiting
qualified
device‐to‐device
variation.
On
whole,
study
depicted
attractive
landscape
next‐generation
integrated
optoelectronics.
