Improving the Operational Stability of the Sb2Se3-Based Self-Powered Photodetector via Interfacial Engineering
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 24, 2025
Originating
from
photovoltaic
devices,
self-powered
photodetectors
(SPPDs)
have
low
power
consumption
and
show
promising
applications
in
photoelectric
imaging
optical
communications.
Many
efforts
been
devoted
to
improving
their
photodetection
performances,
including
responsivity,
detectivity,
response
time.
However,
work
on
operational
stability,
one
of
the
key
parameters
applied
PDs,
is
still
rare.
Here,
using
an
interfacial
engineering
method,
we
improve
stability
representative
Sb2Se3-based
SPPD.
The
Sb2O3
modification
layer
at
interface
between
Sb2Se3
TiO2
layers
characterized
systematically.
With
optimized
fabrication
layer,
under
both
air
ambient
underwater
conditions
significantly
enhanced.
Moreover,
performances
SPPD,
time,
are
improved
0.45
A/W,
2.70
×
1013
Jones,
81.5/75.0
ns,
respectively.
Specifically,
without
encapsulation,
photoresponse
devices
vary
by
only
around
ten
percent
after
working
underwater.
Our
provides
a
facile
effective
way
modify
properties
heterostructure
Язык: Английский
Low-power optoelectronic synaptic devices with ZnMgO in deep-ultraviolet encryption computation
Jingyang Li,
Kai Chen,
Chao Wu
и другие.
Applied Physics Letters,
Год журнала:
2025,
Номер
126(22)
Опубликована: Июнь 2, 2025
The
realization
of
vision-based
neuromorphic
computing
relies
significantly
on
advancements
in
optoelectronic
synaptic
chip
technology.
Currently,
the
development
devices
is
mainly
limited
by
high
power
consumption
due
to
bias
voltage
and
low
recognition
rates
caused
background
noise.
A
low-power
deep-ultraviolet
synapse
device
developed
doping
Mg
into
zinc
oxide
modulate
oxygen-vacancy
defects.
Specifically,
behavior
still
has
excellent
persistent
photoconductivity
response
at
12
mV
bias,
single
energy
2.34
pJ.
Meanwhile,
artificial
neural
network
constructed
according
excitation
inhibition
characteristics,
rate
handwritten
digits
as
95.41%.
In
addition,
basis
demonstrating
ultraviolet
image
visual
learning
memory,
provides
an
encryption
algorithm
verification
array
integrating
sensing
storage
with
20
nJ.
This
strong
anti-interference
supports
high-performance
neural-state
computing.
Язык: Английский
Enhancing the Performance of Broadband Sb2Se3/Ga2O3 Self-Powered Photodetectors via Modulation of Ga2O3 Surface States and Their Application in All-Day Corona Detection
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Июнь 5, 2025
The
technology
for
photodetection
and
localization
of
corona
discharge
typically
necessitates
the
integration
various
photodetectors
(PDs)
with
different
photoresponse
bands
relies
on
external
power
supplies.
A
self-powered
PD
was
fabricated
utilizing
Sb2Se3/Ga2O3
heterojunction,
exhibiting
a
broadband
from
solar-blind
ultraviolet
(SBUV)
to
visible
(Vis)
near-infrared
(NIR)
bands.
surface
states
Ga2O3
nanorod
array
(NR)
films
were
modulated
by
treatment
hydrogen
peroxide
(H2O2)
solution
periods
time
suppress
interface
recombination
photogenerated
carriers
in
type-I
heterojunctions.
H2O2
resulted
increased
hydroxyl
groups
(-OH)
decreased
oxygen
vacancies
NRs.
-OH
can
facilitate
molecule
(O2)
adsorption
NRs
form
O2-
consume
holes
reduce
carriers.
However,
decrease
will
cause
decline
concentration
electrons
hinder
carrier
transport.
Ultimately,
optimized
Al/Sb2Se3/Ga2O3/FTO
PD,
subjected
4
min,
demonstrated
responsivities
3.3,
130,
180
mA/W
under
254,
525,
850
nm
light
illumination
without
applying
bias
voltage,
respectively.
utilization
desorption
processes
regulate
at
is
an
effective
strategy
improving
performance
I-type
heterojunction
PDs.
An
approach
conceptually
proposed
all-day
real-time
monitoring
high-voltage
transmission
lines
characteristic
SBUV
applied
capture
signals
generated
discharge.
Vis
NIR
employed
provide
background
information
both
strong
conditions
during
daytime
weak
nighttime.
results
low
miniaturized
digitalization
Power
Internet
Things
(IoT)
enable
lines.
Язык: Английский