Materials Research Bulletin,
Год журнала:
2024,
Номер
179, С. 112950 - 112950
Опубликована: Июнь 12, 2024
La2-yYyO3
phosphor
powders
were
prepared
via
the
citric
acid
sol-gel
combustion
method
and
their
stability
was
checked
after
four
months
of
storage
in
atmosphere
using
X-ray
diffraction.
The
material,
like
La2O3,
prone
to
hydroxylation
unless
a
high
proportion
Y
added,
which
also
caused
changes
phases
present.
Based
on
its
stability,
composition
La0.5Y1.5O3
selected
for
further
study
with
Bi
doping.
luminescence
from
this
material
not
as
intense
that
Y2-xO3:Bix=0.005,
but
there
significant
shift
colour
result
added
La
meant
emission
Bi3+
ions
at
S6
sites
alloy
close
unstable
La2O3
chart.
Chemical Science,
Год журнала:
2024,
Номер
15(35), С. 14202 - 14208
Опубликована: Янв. 1, 2024
A
green
MOF
phosphor
can
maintain
84%
of
its
initial
emission
intensity
after
being
heated
to
150
°C,
exceeding
several
commercial
inorganic
phosphors.
Chemical Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
The
exploitation
and
utilization
of
resources
in
marine
environments
have
ignited
a
demand
for
advanced
illumination
optical
communication
technologies.
Light-emitting
diodes
(LEDs),
heralded
as
"green
lighting
sources",
offer
compelling
solution
to
the
technical
challenges
exploration
due
their
inherent
advantages.
Among
myriad
LED
technologies,
phosphor-converted
light-emitting
(pc-LEDs)
emerged
frontrunners
applications.
At
heart
pc-LEDs
lie
phosphor
materials,
colour-converters
that
orchestrate
emission
light.
In
environment,
blue-green
light
with
wavelength
440-570
nm
exhibits
deepest
penetration
depth,
while
other
wavelengths
are
rapidly
attenuated
shallow
layer.
Additionally,
specific
crucial
particular
However,
moist
environment
well
continuous
stable
pose
formidable
challenge
environmental
stability
phosphors.
Therefore,
developing
phosphors
exceptional
colour
purity
high
thermal
moisture
is
paramount
Herein,
this
review
delves
into
application
pc-LED
technology
underwater
fishery,
exploring
development
strategies
tailored
environment.
insights
presented
serve
valuable
reference
further
research
on
devices.
Journal of the American Ceramic Society,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 4, 2025
Abstract
Optical
thermometric
and
anti‐counterfeiting
multifunctional
materials
hold
great
promise
for
practical
applications,
yet
their
development
continues
to
encounter
considerable
challenges.
Here,
we
successfully
developed
a
new
Bi
3+
,Er
co‐doped
Y
2
GaSbO
7
powder
with
multicolor
luminescence.
Through
adjusting
the
excitation
wavelengths,
emissions
in
violet,
blue,
green,
orange
are
achieved.
The
phosphor
demonstrates
remarkable
thermochromism
due
distinct
temperature‐dependent
luminescence
of
Er
,
confirmed
under
irradiation
at
312
or
980
nm.
By
reducing
power
nm
laser
increasing
laser‐to‐sample
distance,
emitting
color
can
be
precisely
tuned
from
gold‒yellow
yellow‒green
orange‒red.
These
diverse
luminescent
characteristics
enable
creation
multilevel
system.
Moreover,
four‐mode
optical
thermometry
an
optimal
relative
sensitivity
1.98%
K
−1
high
thermal
resolution
0.15
K,
signal
reversibility
was
established
using
fluorescence
intensity
ratio
decay
time.
results
disclose
that
:Bi
is
promising
candidate
temperature
monitoring
dynamic
applications.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 11, 2024
Abstract
Achieving
single‐phase
full‐spectrum
white
light
(SFWL)
phosphors
is
a
central
goal
in
the
optical
field
because
they
simplify
white‐LEDs
assembly
and
avoid
long‐term
color
instability.
Despite
many
approaches
are
developed,
current
SFWL
still
suffer
from
chromaticity
drift
due
to
inconsistent
thermal
quenching
of
multiple
emitting
centers.
Herein,
an
absolutely
structural
disorder
strategy
established
develop
single‐emitting
center‐based
phosphor.
Precisely
controlling
flux
added
induces
translation
ordered
Y
0.75
Ta
0.25
O
1.75
:Bi
3+
disordered
0.785
0.215
1.715
,
as
directly
identified
by
STEM‐HAADF
analyses.
Structural
enables
produce
with
FWHM
6194
cm
−1
(175
nm)
employing
single
activator
site,
1352
increase
compared
cyan‐emitting
despite
Bi
occupies
two
lattice
positions.
This
SFWL,
coupled
minimal
expansion
unit
cell
inapparent
spectral
overlap
excitation
emission
bands,
ensure
zero‐chromaticity
shift
elevated
temperature.
A
prototype
using
luminescent
layer
generates
warm
without
perceptible
CIE
coordinates
under
various
currents
or
after
extremely
continuous
operation.
work
highlights
potential
designing
exceptional
stability.
Dalton Transactions,
Год журнала:
2024,
Номер
53(37), С. 15403 - 15411
Опубликована: Янв. 1, 2024
The
development
of
novel
narrow-band
emitting
phosphors
with
high
efficiency
and
stability
is
great
significance
for
WLED
backlights.
In
recent
years,
the
research
on
Bi
