Multimodal
luminescent
materials
are
widely
used
in
noncontact
temperature
sensors
and
fluorescent
dynamic
anticounterfeiting
due
to
their
visible
persistent
luminescence
fast
optical
signal
response.
To
this
end,
CaY0.99GaO4:
0.01
Bi3+;
CaY0.92GaO4:
Bi3+,
0.07Eu3+;
CaY0.96GaO4:
0.03Er3+
phosphors
were
prepared
using
the
high-temperature
solid-state
method.
The
down-conversion
luminescence,
up-conversion
long
mechanical
of
studied,
achieving
multicolor
luminescence.
It
was
found
that
0.07Eu3+
phosphor
achieves
maximum
relative
sensitivity
1.49%
K-1.
These
show
great
potential
for
applications
detection.
Through
density
functional
theory
electron
localization
function
analysis,
multimodal
CaYGaO4:
Eu3+/Er3+
studied.
ion
doping
leads
a
decrease
band
gap
induces
Jahn-Teller
effect,
creating
lower
energy
channels
accelerate
carrier
release
enhance
performance.
This
is
fundamental
reason
realization
human
motion
Subsequently,
novel
sensing
device
detection
developed
high
performance
phosphor.
properties
demonstrated
static-dynamic
applications.
Finally,
it
stability
wide
defect
states
provide
new
approach
sensors,
detection,
information
storage,
anticounterfeiting.
Radiation Measurements,
Journal Year:
2022,
Volume and Issue:
158, P. 106846 - 106846
Published: Aug. 20, 2022
The
quest
for
new
materials
thermoluminescence
(TL)
and
optically
stimulated
luminescence
(OSL)
dosimetry
continues
to
be
a
central
line
of
research
in
dosimetry,
occupying
many
groups
investigators,
is
the
topic
publications.
Nevertheless,
it
has
also
been
area
with
pitfalls,
slow
advances
our
understanding
processes,
rare
improvements
over
existing
materials.
Therefore,
this
paper
reviews
status
field
goal
addressing
some
fundamental
questions:
Is
there
need
TL/OSL
dosimetry?
Can
these
designed
and,
if
so,
are
strategies
or
rules
that
can
followed?
What
common
pitfalls
how
they
avoided?
By
discussing
questions,
we
hope
contribute
more
guided
approach
development
luminescent
applications.
Abstract
An
accurate
measurement
of
radiation
doses
is
required
to
ensure
efficient
use
electromagnetic
in
medical
diagnostics,
agriculture,
or
general
lighting
applications.
Yet,
existing
dosimeters
usually
face
the
issues
cumbersome
manipulation,
time‐consuming
analysis,
power‐supply
requirement.
Here,
an
all‐round
dosimeter
reported
based
on
BaMgSiO
4
,
a
photochromic
material
that
exhibits
reversible
white‐pink
color
change
upon
irradiation.
Electron
paramagnetic
resonance
measurements
under
situ
coloring
and
bleaching
reveal
charge
carrier
trapping
detrapping
at
oxygen
vacancy‐related
defects
determine
behavior.
This
can
be
utilized
for
dosimetry
X‐rays,
ultraviolet,
visible
light,
as
are
dependent
irradiation
wavelength
dose.
The
distinct
variation
allows
on‐site
by
colorimetric
method,
special
wavelength‐responsive
behavior
ultraviolet
region
suitable
personal
solar
light
monitoring.
By
virtue
good
stability
excellent
cycling
robustness,
ideal
integrating
detector
dosimetry.
A
prototype
device
also
developed
long‐duration
daylight
measurements.
These
findings
enhance
understanding
inorganic
materials
stimulate
exploration
new
dosimeters.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 1, 2024
Abstract
Passive
dosimeters
enabling
accurate
measurement
of
doses
from
gamma
rays
to
visible
light
are
necessary
ensure
efficient
utilization
electromagnetic
radiation
in
numerous
fields
like
medical
diagnostics
and
industrial
manufacturing.
The
specific
requirements
for
terms
dosimetry
range,
sensitivity,
accuracy,
stability
each
application
have
led
the
development
various
based
on
new
materials
mechanisms.
Here,
a
comprehensive
review
different
types
classified
according
response
signal,
namely
electron
paramagnetic
resonance,
electrical,
optical,
is
provided.
This
starts
with
general
introduction
dosimetry,
classification
dosimeters,
an
elucidation
necessity
ranges
spectrum.
followed
by
overview
fundamental
explanation
procedure,
dosimetric
quantities.
Emphasis
given
working
mechanism,
design
concept,
applications
type
dosimeter
as
well
their
respective
strengths
drawbacks.
Challenges
prospects
presented
at
end
review.
provides
insightful
material‐mechanism‐characteristics‐application
relationship
that
hopefully
can
serve
inspiration
devices.
Applied Physics Reviews,
Journal Year:
2024,
Volume and Issue:
11(4)
Published: Oct. 31, 2024
Discovering
light
dosimeters
that
can
function
effectively
from
liquid
nitrogen
temperature
to
700
K
presents
significant
challenges.
Such
facilitate
a
range
of
cutting-edge
applications,
including
anti-counterfeiting
measures
at
low
for
cryo-preservation.
To
such
discovery,
stacked
vacuum
referred
binding
energy
diagrams
the
LiYGeO4
cluster
crystals
have
been
first
constructed.
They
offer
robust
method
controlling
both
electron
and
hole
trapping
depth
in
crystals.
Wide
shifting
Bi2+
Eu2+
thermoluminescence
(TL)
glow
bands
emerges
200
500
LiYxLu1-xGeO4:0.01Bi3+
LiYxLu1-xGeO4:0.01Bi3+,
0.001Eu3+,
by
changing
x,
facilitating
conduction
band
tailoring.
Bi4+
TL
300
LiYGezSi1-zO4:0.01Bi3+,
tuning
z,
valence
peaks
near
135,
185,
232,
311
emerge
LiyNa1-yYGeO4:
0.001Bi3+.
Particularly,
discovered
Bi3+
or/and
lanthanide
modified
exhibit
superior
charge
carrier
storage
capacity
minimal
fading
properties.
For
instance,
ratio
intensity
optimized
LiYGe0.75Si0.25O4:0.001Bi3+
industrial
BaFBr(I):Eu2+
is
as
high
∼4.
Interestingly,
imaging
intense
optically
driven
ultraviolet-A
(UVA)
luminescence
has
validated
254
nm
energized
LiY0.25Lu0.75GeO4:0.01Bi3+
with
100
lux
white
LED
illumination.
Together
ZnS:Mn2+,
LiTaO3:Bi3+,
Sm3+,
Cs2ZrCl6:Sb3+
perovskites,
realization
wide
offers
promising
use
versatile
anti-counterfeiting,
information
storage,
delayed
x-ray
purposes.
Nanomaterials,
Journal Year:
2022,
Volume and Issue:
12(17), P. 3068 - 3068
Published: Sept. 3, 2022
This
work
examined
the
thermoluminescence
dosimetry
characteristics
of
Ag-doped
ZnO
thin
films.
The
hydrothermal
method
was
employed
to
synthesize
films
with
variant
molarity
Ag
(0,
0.5,
1.0,
3.0,
and
5.0
mol%).
structure,
morphology,
optical
were
investigated
using
X-ray
diffraction
(XRD),
scanning
electron
microscope
(SEM),
energy-dispersive
spectroscopy
(EDX),
photoluminescence
(PL),
UV-vis
spectrophotometers.
by
exposing
samples
radiation.
It
obtained
that
highest
TL
intensity
for
appeared
correspond
0.5
mol%
Ag,
when
exposed
results
further
showed
glow
curve
has
a
single
peak
at
240-325
°C,
its
maximum
270
which
corresponded
heating
rate
5
°C/s.
annealing
procedures
best
response
found
400
°C
30
min.
dose-response
revealed
good
linear
up
4
Gy.
proposed
sensitivity
1.8
times
higher
than
TLD
100
chips.
thermal
fading
recorded
8%
1
Gy
20%
in
first
hour.
After
45
days
irradiation,
signal
loss
32%
40%
cases
Gy,
respectively.
confirmed
all
samples'
stored
signals
affected
exposure
sunlight,
decreased
70%
after
6
h.
new
dosimeter
exhibits
properties
radiation
measurement,
given
overgrowth
(in
terms
curve)
within
s
(similar
case),
simple
procedure,
high
(two
100).
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 22, 2024
Mechanoluminescent
materials
have
broad
application
prospects
in
advanced
displays,
stress
imaging,
and
anti-counterfeiting
owing
to
their
ability
convert
mechanical
stimuli
into
light.
However,
most
previous
studies
focused
on
the
visible
near-infrared
regions.
Although
natural
ultraviolet
C
(UVC)
light
is
nearly
absent
Earth's
surface,
it
plays
an
important
role
many
fields.
Therefore,
development
of
smart
capable
emitting
UVC
mechanoluminescence
(ML)
expanding
scenarios
ML
are
significant
but
challenging.
Here
property
Sr
Physics in Medicine and Biology,
Journal Year:
2023,
Volume and Issue:
68(4), P. 045017 - 045017
Published: Jan. 25, 2023
Objective.This
work
aims
at
characterizing
LiF:Mg,Ti
thermoluminescence
detectors
(TLDs)
for
dosimetry
of
a
250
MeV
proton
beam
delivered
ultra-high
dose
rates
(UHDR).
Possible
rate
effects
in
LiF:Mg,Ti,
as
well
its
usability
narrow
beams
are
investigated.Approach.LiF:Mg,Ti
(TLD-100TMMicrocubes,
1
mm
×
mm)
was
packaged
matrices
5
detectors.
The
center
each
matrix
irradiated
with
single-spot
low-LET
(energy
>244
MeV)
the
(1-4500)
Gy
s-1average
range.
A
reconstruction
procedure
applied
to
highest
(Gaussian
sigma
<2
correct
volumetric
averaging
effects.
Reference
carried
out
diamond
detector
and
radiochromic
films.
number
protons
measured
by
Faraday
cup,
which
employed
normalize
responses.Main
results.The
lateral
spread
obtained
from
agreed
one
derived
film
measurements.
No
were
observed
investigated
within
3%
(k=
1).
On
average,
response
TLDs
reference
their
uncertainties.
largest
deviation
(-5%)
4500
s-1.Significance.The
independence
makes
them
suitable
UHDR
beams.
Additionally,
combination
can
be
determine
profile
Nano Letters,
Journal Year:
2023,
Volume and Issue:
23(18), P. 8753 - 8760
Published: Sept. 15, 2023
X-ray
dose
detection
plays
a
critical
role
in
various
scientific
fields,
including
chemistry,
materials,
and
medicine.
However,
the
current
materials
used
for
this
purpose
face
challenges
both
immediate
delayed
radiation
detections.
Here,
we
present
visual
dosimetry
method
multienvironment
applications,
utilizing
NaLuF4
nanocrystals
(NCs)
that
undergo
color
change
from
green
to
red
upon
irradiation.
By
adjustment
of
concentrations
Ho3+,
emission
NCs
can
be
tuned
thanks
cross-relaxation
effects.
Furthermore,
irradiation
induces
generation
trapping
centers
NaLuF4:Ho3+
NCs,
endowing
mechanoluminescence
(ML)
behavior
mechanical
stimulation
after
ceases.
The
ML
intensity
shows
linear
correlation
with
dose,
facilitating
radiation.
This
breakthrough
facilitates
inspection
flaw
detection,
nuclear
medicine,
customs,
civil
protection,
thereby
enhancing
opportunities
monitoring
control.