Considerations about the determination of optical bandgap from diffuse reflectance spectroscopy using the tauc plot
Journal of Optics,
Год журнала:
2024,
Номер
unknown
Опубликована: Фев. 24, 2024
Язык: Английский
Origin of Anomalous Transient Photocurrent in Solution-Processed WS2 Nanosheet-Based Self-Powered Photodetectors
ACS Applied Nano Materials,
Год журнала:
2024,
Номер
7(7), С. 8007 - 8021
Опубликована: Март 25, 2024
Solution-processed
self-powered
photodetectors
were
fabricated
by
using
tungsten
disulfide
(WS2)
nanosheets
(NSs)
in
a
vertical
structure.
The
device
shows
high
on–off
ratio
of
∼2.4
×
105
under
illumination
from
light-emitting
diode
wavelength
(λ)
∼
625
nm
and
an
intensity
100
mW/cm2.
photoresponsivity
the
peaks
around
λ
630
523
nm,
which
correspond
to
characteristic
absorption
WS2
NSs.
devices
exhibit
fast
photoresponse
within
few
milliseconds
pulsed
anomalous
slow
decay
photocurrent
during
pulse
width
(pulse-on
time
∼50
s).
photodetector
constant
is
studied
detail
steady-state
transient
measurements.
intensity-dependent
measurements
show
sublinear
behavior
with
due
presence
traps
trap-limited
conduction
devices.
Similarly,
time-dependent
measurement
various
intensities
depicts
accumulation
trapping
charges
at
interfaces,
act
as
recombination
centers
that
lead
charge
carrier
loss.
Additionally,
different
vacuum
conditions
indicate
influence
adsorbate
molecules
atmosphere.
Furthermore,
interfacial
effects
performance-limiting
factors
are
analyzed
probing
dynamics
these
function
intensity,
background
illumination,
ambient
pressure,
temperature.
Our
investigations
on
shed
light
how
extracted,
accumulated,
recombined
WS2-transport
layer
interfaces.
Язык: Английский
Recent Developments of Advanced Broadband Photodetectors Based on 2D Materials
Nanomaterials,
Год журнала:
2025,
Номер
15(6), С. 431 - 431
Опубликована: Март 11, 2025
With
the
rapid
development
of
high-speed
imaging,
aerospace,
and
telecommunications,
high-performance
photodetectors
across
a
broadband
spectrum
are
urgently
demanded.
Due
to
abundant
surface
configurations
exceptional
electronic
properties,
two-dimensional
(2D)
materials
considered
as
ideal
candidates
for
photodetection
applications.
However,
with
both
high
responsivity
fast
response
time
remain
challenging
issue
all
researchers.
This
review
paper
is
organized
follows.
Introduction
introduces
fundamental
properties
performances
transition
metal
dichalcogenides
(TMDCs),
perovskites,
topological
insulators,
graphene,
black
phosphorus
(BP).
section
provides
an
in-depth
analysis
their
unique
optoelectronic
probes
intrinsic
physical
mechanism
detection.
In
Two-Dimensional
Material-Based
Broadband
Photodetectors,
some
innovative
strategies
given
expand
detection
wavelength
range
2D
material-based
enhance
overall
performances.
Among
them,
chemical
doping,
defect
engineering,
constructing
heterostructures,
strain
engineering
methods
found
be
more
effective
improving
The
last
addresses
challenges
future
prospects
photodetectors.
Furthermore,
meet
practical
requirements
very
large-scale
integration
(VLSI)
applications,
work
reliability,
production
cost
compatibility
planar
technology
should
paid
much
attention.
Язык: Английский
A review on graphene-based inorganic nanostructures: Synthesis, functionalization, and applications in photocatalytic degradation and electrochemical sensing of pollutants
Inorganic Chemistry Communications,
Год журнала:
2025,
Номер
unknown, С. 114398 - 114398
Опубликована: Март 1, 2025
Язык: Английский
Advanced Materials for Biological Field‐Effect Transistors (Bio‐FETs) in Precision Healthcare and Biosensing
Advanced Healthcare Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 10, 2025
Abstract
Biological
Field
Effect
Transistors
(Bio‐FETs)
are
redefining
the
standard
of
biosensing
by
enabling
label‐free,
real‐time,
and
extremely
sensitive
detection
biomolecules.
At
center
this
innovation
is
fundamental
empowering
role
advanced
materials,
such
as
graphene,
molybdenum
disulfide,
carbon
nanotubes,
silicon.
These
when
harnessed
with
downstream
biomolecular
probes
like
aptamers,
antibodies,
enzymes,
allow
Bio‐FETs
to
offer
unrivaled
sensitivity
precision.
This
review
an
exposition
how
advancements
in
materials
science
have
permitted
detect
biomarkers
low
concentrations,
from
femtomolar
attomolar
levels,
ensuring
device
stability
reliability.
Specifically,
examines
incorporation
cutting‐edge
architectures,
flexible
/
stretchable
multiplexed
designs,
expanding
frontiers
contributing
development
more
adaptable
user‐friendly
Bio‐FET
platforms.
A
key
focus
placed
on
synergy
artificial
intelligence
(AI),
Internet
Things
(IoT),
sustainable
approaches
fast‐tracking
toward
transition
research
into
practical
healthcare
applications.
The
also
explores
current
challenges
material
reproducibility,
operational
durability,
cost‐effectiveness.
It
outlines
targeted
strategies
address
these
hurdles
facilitate
scalable
manufacturing.
By
emphasizing
transformative
played
their
cementing
position
Bio‐FETs,
positions
a
cornerstone
technology
for
future
solution
precision
would
lead
era
where
herald
massive
strides
biomedical
diagnostics
subsume.
Язык: Английский
Advances in Two-Dimensional Materials Synthesis and MoS<sub>2</sub>/WS<sub>2</sub> Heterostructure Photodetectors
Applied Physics,
Год журнала:
2025,
Номер
15(04), С. 242 - 255
Опубликована: Янв. 1, 2025
Язык: Английский
Enhanced efficiency and stability in indoor organic photovoltaics with spray-deposited, liquid-processable MoS₂ and WS₂ hole transport layers
Discover Materials,
Год журнала:
2025,
Номер
5(1)
Опубликована: Май 22, 2025
Язык: Английский
Sulfuration-induced enhancement of photodetection performance of photoconductive detector based on Bi2O2Se thin film
Surfaces and Interfaces,
Год журнала:
2024,
Номер
54, С. 105227 - 105227
Опубликована: Окт. 5, 2024
Язык: Английский
Photovoltaic Response of Liquid Phase Exfoliated Graphene - MoS2 Heterostructures
Journal of the Physical Society of Japan,
Год журнала:
2024,
Номер
93(8)
Опубликована: Июль 3, 2024
Язык: Английский
Enhancement in light absorption of InAs-thin-film photodetectors with metal nanowire grating
Опубликована: Авг. 14, 2024
In
this
work,
we
have
designed
a
novel
surface
structure
for
enhancing
the
optical
absorption
of
two-dimensional
indium
arsenide
(InAs)
photodetectors,
with
combination
local
light-field
enhancement
and
coupled
back
reflection
effect
to
break
through
performance
bottleneck
thin-film
photodetectors.
Through
finite
element-based
opto-electronic
simulation,
our-proposed
device
has
elevated
light
marked
field
localization
within
visible
near-infrared
spectrum.
Notably,
it
achieves
maximum
70.8%
at
wavelength
780nm,
which
is
5.53
times
that
comparison
sample.
Moreover,
introduction
metal
grating
endowed
our
design
excellent
photoelectrical
response
performance,
namely
responsivity
177.65
A·W-1
,
specific
detectivity
1.367×1010
Jones,
time
1.5
ns
under
bias
voltage
0.01V.
This
work
provides
an
effective
strategy
photoconductive
detectors
offers
beneficial
guidance
designing
high-performance
optoelectronic
devices
Язык: Английский