Laser & Photonics Review,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 23, 2024
Abstract
Red‐emitting
phosphor‐in‐glass
(Red‐PiG)
color
converters
are
critical
for
high‐power
light‐emitting
diode
or
laser‐driven
lighting
applications,
yet
they
remain
challenging
due
to
the
degradation
and
interfacial
reactions
of
red‐emitting
phosphors
within
glass
matrixes.
This
study
investigates
efficacy
spark
plasma
sintering
(SPS)
in
inhibiting
these
across
different
phosphor
compositions.
CaAlSiN
3
:Eu
2+
Sr
2
Si
5
N
8
phosphors,
along
with
fluoride
borosilicate
glasses,
selected
explore
their
behavior
during
SPS.
By
optimizing
morphology,
a
borosilicate‐based
PiG
luminous
flux
248
lm
efficiency
173
W
−1
is
achieved,
setting
new
benchmarks
Red‐PiG
performance.
In
addition,
white
based
on
high‐performance
has
rendering
index
up
90.
The
findings
elucidate
mechanisms
by
which
SPS
can
enhance
stability
optical
performance
materials,
offering
strategic
insights
advancing
synthesis
high‐quality
materials
optoelectronic
applications.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(47), С. 65024 - 65036
Опубликована: Ноя. 18, 2024
X-ray
excited
luminescence
in
scintillators
plays
a
crucial
role
applications
ranging
from
medical
diagnostics
to
industrial
quality
inspection
and
scientific
research.
This
study
explores
the
potential
of
Bi3+-doped
Gd2O3
phosphors
as
next-generation
scintillators,
leveraging
their
broad-spectrum
emission
characteristics
achieve
higher
light
yields.
We
synthesized
Gd2O3:Bi3+
two
crystalline
phases─cubic
monoclinic─using
high-temperature
solid-phase
method.
These
demonstrate
varied
applications,
backlighting
displays
imaging
opaque
biological
samples.
Under
UV
excitation,
each
phase
exhibits
distinct
properties
due
different
Bi3+
occupancy
environments.
The
monoclinic
phase,
at
λex
=
370
nm,
showed
stronger
broader
peak
(fwhm
70
nm)
with
photoluminescence
quantum
yield
(67.94%),
compared
cubic
which
under
optimal
conditions
(λex
377
exhibited
narrower
peaks
40
lower
(44.41%).
Notably,
outperformed
(48,900
photons/MeV)
detection
limits
(380
nGy·s–1
λem
430
nm
285
520
nm).
Both
were
also
embedded
PMMA
create
thin
films
for
imaging,
achieving
high-resolution
outputs
(14
lp·mm–1).
Inorganic Chemistry Frontiers,
Год журнала:
2024,
Номер
11(18), С. 5924 - 5938
Опубликована: Янв. 1, 2024
Ultra-sensitive
thermometers
and
high-bright
luminescent
inks
are
successfully
designed
for
accurate
temperature
detection
screen
printing
based
on
CaLa
4
Si
3
O
13
.
Journal of Materials Chemistry C,
Год журнала:
2024,
Номер
12(42), С. 17278 - 17288
Опубликована: Янв. 1, 2024
TbSSA@ZnO/SnO
2
with
a
wire-in-tube
structure
is
constructed.
ZnO/SnO
shell
effectively
protects
TbSSA
core
to
resist
the
high
operating
temperature
of
200
°C.
The
prepared
W-WLEDs
can
maintain
stable
illumination
under
floating
driving
currents.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(42), С. 57421 - 57427
Опубликована: Окт. 9, 2024
Exploring
methods
to
achieve
high
thermal
stability
in
phosphors
is
of
great
significance
for
their
applications
high-temperature
fields.
Currently,
energy
transfer
(ET)
from
the
host
activator
lanthanide
ions
(Ln3+)
an
effective
approach
improving
antithermal
quenching
phosphors.
In
this
contribution,
LaNbO4
(LNO)
with
efficient
blue
emission
used
as
construct
host–Ln3+
dual-emitting
LNO/Ln3+
(Eu3+/Sm3+/Pr3+)
phosphor
system,
and
ET
efficiency
under
activation
investigated.
Experimental
results
indicate
that
temperature
rises,
LNO
Ln3+
increases,
resulting
completely
opposite
luminescent
responses
between
Ln3+.
That
is,
undergoes
quenching,
while
exhibits
where
integrated
luminescence
intensity
at
498
K
2.50–3.73
times
298
K.
Therefore,
based
on
differing
response
trends
peaks
phosphors,
a
dual-mode
optical
sensing
system
can
be
designed
using
fluorescence
ratio
color
change,
achieving
relative
sensitivity.
Thus,
work
provides
new
insights
into
design
sensing.
