Advanced Materials Technologies,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 20, 2024
Abstract
On‐line
in
situ
monitoring
of
radiation
emitted
by
radiotracers
during
intravenous
injection
is
crucial
importance
for
the
safety
patients
and
personnel
involved
nuclear
medicine
treatments
analysis.
The
aim
this
work
to
assess
wearable
perovskite
ionizing
detectors
such
application.
With
purpose
pixelated
direct
detector
based
on
thin
films
2D
layered
PEA
2
PbBr
4
are
tested
gamma‐rays
18
F
radiopharmaceutical
under
different
experimental
conditions.
here
demonstrated
being
able
detect
real‐time
annihilation
radiotracer.
Its
reliability
assessed
half‐life
measurement
with
a
maximum
accuracy
deviation
within
8%.
also
successes
its
validation
foreseen
application,
demonstrating
monitor
whole
process
extravasation
event.
Materials,
Год журнала:
2024,
Номер
17(13), С. 3320 - 3320
Опубликована: Июль 4, 2024
Here
we
present
the
cascade
converter
(CC),
which
provides
real-time
imaging
of
ionizing
radiation
(IoR)
distribution.
It
was
designed
and
manufactured
with
simplest
architecture,
utilizing
liquid
crystal
display
(LCD)
technology.
Based
on
two
merged
substrates
transparent
electrodes,
armed
functional
layers,
cell
filled
nematic
crystal,
a
display-like,
IoR-stimulated
CC
achieved.
The
comprises
low-absorbing
polymer
(made
polyethylene
terephthalate—PET)
ITO
electrode
covered
thin
semipermeable
membrane
(biphenylperfluorocyclobutyl:
BP-PFCB)
doped
nanoparticles
(NPs)
Lu2O3:Eu.
This
stack
photoconductive
layer
α-Se
finally
polyimide
(PI)
for
alignment.
opposite
substrate
made
LCD-type
glass
aligning
layers.
Both
form
twisted
structure
(TN)
driven
an
effective
electric
field
Eeff.
An
driving
TN
is
generated
sum
(1)
bias
voltage
VBIAS
applied
to
electrodes
(2)
photogenerated
additional
VXray
induced
between
layers
NPs-doped
BP-PFCB
in-between.
IoR
(here,
X-ray)
conversion
into
real
distribution
achieved
in
following
stages:
non-ionizing
red
light
emitted
NPs,
transformation
charge
distributed
α-Se,
what
results
generation
VXray,
(3)
voltage-mediated,
switching
observed
naked
eye.
presented
device
characterized
by
simple
manufacturing
process,
potential
use
as
portable
element
detection
dosimeter.
Coatings,
Год журнала:
2024,
Номер
14(8), С. 945 - 945
Опубликована: Июль 27, 2024
Zero-dimensional
tin-based
halide
perovskites
have
garnered
considerable
interest
owing
to
their
remarkable
optical
properties,
including
broad-band
emission,
high
photoluminescence
(PL)
efficiency,
and
low
self-absorption.
Nevertheless,
enhancing
the
PL
efficiency
stability
of
these
materials
remains
a
pressing
challenge.
In
this
study,
enhancement
in
Cs4SnBr6
zero-dimensional
perovskite
was
investigated
through
Ce3+
doping.
Our
experimental
results
demonstrate
that
incorporation
can
significantly
boost
light
emission
intensity
from
self-trapped
excitons
(STEs)
Cs4SnBr6,
achieving
over
150%
increase
compared
undoped
sample,
with
quantum
yield
approximately
64.7%.
Moreover,
thermal
corresponding
doped
sample
is
markedly
enhanced.
Through
comprehensive
analyses,
X-ray
diffraction,
energy-dispersive
spectroscopy,
time-resolved
PL,
temperature-dependent
measurements,
we
elucidate
enhanced
attributed
distortion
[SnBr6]4−
octahedral
structure
induced
by
doping,
which
strengthens
electron–phonon
coupling
elevates
binding
energy
STEs.
Advanced Materials Technologies,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 20, 2024
Abstract
On‐line
in
situ
monitoring
of
radiation
emitted
by
radiotracers
during
intravenous
injection
is
crucial
importance
for
the
safety
patients
and
personnel
involved
nuclear
medicine
treatments
analysis.
The
aim
this
work
to
assess
wearable
perovskite
ionizing
detectors
such
application.
With
purpose
pixelated
direct
detector
based
on
thin
films
2D
layered
PEA
2
PbBr
4
are
tested
gamma‐rays
18
F
radiopharmaceutical
under
different
experimental
conditions.
here
demonstrated
being
able
detect
real‐time
annihilation
radiotracer.
Its
reliability
assessed
half‐life
measurement
with
a
maximum
accuracy
deviation
within
8%.
also
successes
its
validation
foreseen
application,
demonstrating
monitor
whole
process
extravasation
event.
