Analytical Chemistry,
Journal Year:
2023,
Volume and Issue:
95(48), P. 17426 - 17437
Published: Nov. 16, 2023
UV–vis
spectrophotometry
and
spectrofluorometry
are
indispensable
tools
in
education,
research,
industrial
process
controls
with
widespread
applications
nanoscience
encompassing
diverse
nanomaterials
fields.
Nevertheless,
the
prevailing
spectroscopic
interpretations
analyses
often
exhibit
ambiguity
errors,
particularly
evident
literature.
This
analytical
chemistry
Perspective
focuses
on
fostering
evidence-based
data
interpretation
experimental
studies
of
materials'
absorption,
scattering,
fluorescence
properties.
We
begin
by
outlining
common
issues
observed
analysis.
Subsequently,
we
provide
a
summary
recent
advances
commercial
spectrophotometric
spectrofluorometric
instruments,
emphasizing
their
potential
to
enhance
scientific
rigor
Furthermore,
propose
avenues
for
future
developments
instrumentation
measurement
strategies,
aiming
further
augment
utility
optical
spectroscopy
nano
research
samples
where
complexity
surpasses
existing
tools.
Through
targeted
focus
critical
related
properties
nanomaterials,
this
can
serve
as
valuable
resource
researchers,
educators,
practitioners.
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
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(24)
Published: March 4, 2024
Low-toxicity
tin
halide
perovskites
with
excellent
optoelectronic
properties
are
promising
candidates
for
photodetection.
However,
perovskite
photodetectors
have
suffered
from
high
dark
current
owing
to
uncontrollable
Sn
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 10, 2025
On-chip
polarized
photodetectors
play
a
crucial
role
in
advancing
ultra-compact
optoelectronic
devices
for
next-generation
technologies.
However,
simultaneously
detecting
the
angle
of
linear
polarization
(AoLP)
and
degree
(DoLP)
within
single
device
remains
challenging
task,
particularly
due
to
inherently
weak
states
found
naturally
anisotropic
materials.
In
this
paper,
it
is
reported
on
development
twisted
monopole
barrier
photodetector
based
PdSe2/MoS2/PdSe2
configuration.
This
features
rapid
response
time
7-12
µs.
an
imaging
demonstration,
operates
as
single-polarization
photodetector,
reconstructing
AoLP
DoLP
distributions
target
objects
through
bias-switchable
detection
across
wide
spectral
range,
all
without
plasmonic/metasurface
nanostructures
or
filters.
Additionally,
demonstrates
bipolar
characteristics
under
zero-bias
conditions
at
room
temperature,
enabling
dual-binary
coding
polarimetric-encoded
communication.
These
combination
positions
highly
promising
candidate
on-chip
applications.
Physica Scripta,
Journal Year:
2024,
Volume and Issue:
99(9), P. 095994 - 095994
Published: Aug. 6, 2024
Abstract
This
study
presents
a
detailed
investigation
into
optimizing
the
novel
perovskite
Mg
3
AsBr
through
uniaxial
stress
for
enhanced
performance
in
solar
and
optoelectronic
applications.
Using
Density
Functional
Theory
(DFT),
we
examined
its
structural,
electronic,
optical
properties
under
from
0.5
to
5.0
GPa.
Key
findings
include
tuning
of
material’s
bandgap
1.485
eV
(without
stress)
an
optimized
range
closer
1.13581
GPa,
demonstrating
potential
improved
cell
efficiency.
Our
reveal
nuanced
response
absorption
coefficients
at
critical
energies
2.92
4.0
eV,
where
descending
trend
with
increasing
pressure
was
observed,
indicating
plateau
1.5
GPa
anomalous
increase
2.5
behavior
underscores
significance
between
tailoring
responses
essential
enhancing
efficiency
ultraviolet
visible
light
(300–800
nm).
Notably,
dielectric
constant
increased
gradually
stress,
peaking
6.003
slightly
diminishing
suggesting
polarization
intrinsic
electric
fields
mechanical
stress.
research
highlights
engineering
materials
renewable
energy
applications,
offering
pathway
high-efficiency,
low-cost
cells.
Micromachines,
Journal Year:
2024,
Volume and Issue:
15(10), P. 1249 - 1249
Published: Oct. 11, 2024
Photodetectors
are
critical
components
in
a
wide
range
of
applications,
from
imaging
and
sensing
to
communications
environmental
monitoring.
Recent
advancements
material
science
have
led
the
development
emerging
photodetecting
materials,
such
as
perovskites,
polymers,
novel
two-dimensional
quantum
dots,
which
offer
unique
optoelectronic
properties
high
tunability.
This
review
presents
comprehensive
overview
synthesis
methodologies
for
these
cutting-edge
highlighting
their
potential
enhance
photodetection
performance.
Additionally,
we
explore
design
fabrication
photodetectors
with
structures
physics,
emphasizing
devices
that
achieve
figure-of-merit
parameters,
enhanced
sensitivity,
fast
response
times,
broad
spectral
detection.
Finally,
discuss
demonstration
new
applications
enabled
by
advanced
photodetectors,
including
flexible
wearable
devices,
next-generation
systems,
technologies.
Through
this
review,
aim
provide
insights
into
current
trends
future
directions
field
photodetection,
guiding
further
research
rapidly
evolving
area.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 9, 2025
Abstract
There
is
considerable
interest
in
photodetectors
based
on
nontoxic
lead‐free
perovskites.
Tin‐based
perovskites
have
been
regarded
as
one
type
of
the
most
promising
candidate
materials
for
these
devices
due
to
their
relatively
low
bandgap
and
high
light
absorption
coefficient.
In
this
work,
a
stacked
2D/3D
heterostructure
perovskite
films
achieved
through
convenient
vacuum
drying
process,
which
results
an
ultrahigh
responsivity
up
6.8
×
10
5
A
W
−1
detectivity
4.0
14
Jones
at
gate
voltage
−5
V
across
broad
wavelength
region
from
ultraviolet
near‐infrared.
Remarkably,
device
exhibits
synaptic
behavior,
demonstrated
by
its
photocurrent
response
both
photonic
electric
stimuli,
closely
resembles
memory
behavior
observed
biological
neural
networks,
applications
opto‐synaptic
devices.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(33)
Published: June 18, 2024
Abstract
Lead
halide
perovskite
and
organic
semiconductors
are
promising
classes
of
materials
for
photodetector
(PD)
applications.
State‐of‐the‐art
PDs
have
performance
metrics
exceeding
silicon
in
the
visible.
While
offer
bandgap
tunability
due
to
their
chemical
design
with
detection
extended
into
near‐infrared
(NIR),
perovskites
limited
visible
band
first
fraction
NIR
spectrum.
In
this
work,
perovskite–organic
heterojunction
(POH)
absorption
up
950
nm
designed
by
dual
contribution
donor:acceptor
bulk‐heterojunction
(BHJ),
without
any
intermediate
layer.
The
effect
energetics
donor
is
systematically
studied
on
dark
current
(
J
d
)
device
using
PBDB‐T
polymer
family.
Combining
experimental
results
drift‐diffusion
simulations,
it
shown
that
POH
devices
thermal
generation
via
deep
trap
states
BHJ.
Thus,
best
obtained
PM7‐based
POH,
which
delivers
an
ultra‐low
noise
2
×
10
−14
A
Hz
−1/2
high
specific
detectivity
4.7
12
Jones
NIR.
Last,
application
as
pulse
oximeter
high‐accuracy
heartbeat
monitoring
at
long‐distance
meters
demonstrated.
