Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 1, 2024
We
developed
Ni
2+
-doped
(Sr/Ba)
2
MgMoO
6
double
perovskite
molybdate-based
solid-solution
long
wavelength
near-infrared
luminescence
(1000–2000
nm)
phosphors,
which
shiftss
in
the
range
of
1400–1610
nm
by
simple
adjustment
Sr/Ba
ratio.
ACS Materials Letters,
Год журнала:
2024,
Номер
6(10), С. 4555 - 4563
Опубликована: Сен. 3, 2024
Presently,
there
are
very
limited
options
for
a
broad-band
long-wavelength
near-infrared
phosphor-converted
light-emitting
diode
(LWNIR
pc-LED)
with
wavelengths
above
∼1500
nm,
and
most
LWNIR
phosphors
have
low
luminescence
quantum
efficiency.
Here,
Ni2+-doped
MgIn2O4
antispinel
were
prepared
by
high-temperature
solid-state
reaction
method.
Under
365
nm
excitation,
they
exhibited
emission
in
the
range
of
1200–2100
an
peak
∼1490
full
width
at
half-maximum
∼313
indicating
weak
crystal
field
environment
high
electron
polarization
around
center
[MgO6]
octahedron.
The
IQE
EQE
MgIn2O4:Ni2+
∼47.93%
∼34.66%,
respectively.
optimized
phosphor
was
encapsulated
LED
chip
to
obtain
pc-LED
device
night
vision
lighting,
nonvisual
detection,
biological
imaging.
Our
results
confirmed
that
lighting
based
imaging
technology
showed
clear
safety
advantages
over
traditional
high-energy
ray
Abstract
Herein,
we
synthesized
Cr
3+
/Ln
(Er
,
Tm
)‐codoped
rare
earth‐based
Cs
2
NaScCl
6
double
perovskite,
and
the
near‐infrared
emission
of
Ln
can
be
excited
by
visible
light
through
energy
transfer
(ET)
from
to
.
Moreover,
there
are
two
independent
bands,
which
stems
4
T
→
A
transition
(970
nm)
f‐f
(1542
nm
for
Er
1220
),
respectively.
Particularly,
both
compounds
have
ultra‐high
photoluminescence
quantum
yield
(PLQY)
60%
10%Cr
/6%Er
‐codoped
emission:
∼26%)
68%
/4.5%Tm
(Tm
∼56%),
attributed
ET
efficiency
similar
ionic
activity
Sc
allowing
more
dopants
enter
host
lattice.
Considering
excellent
stability
samples,
demonstrated
/Tm
in
applications
imaging
night
vision.
Finally,
reported
/9%Er
‐tridoped
further
applied
it
optical
thermometry.
image
Inorganic Chemistry Frontiers,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 1, 2024
We
developed
a
Cr
3+
-doped
Cs
2
NaLuCl
6
by
grinding–sintering
method,
which
exhibited
emission
peaked
at
around
960
nm,
with
FWHM
of
∼182
and
the
IQE
EQE
optimized
phosphor
were
as
high
∼92.9%
∼60.75%,
respectively.
Chemistry of Materials,
Год журнала:
2024,
Номер
36(3), С. 1763 - 1772
Опубликована: Янв. 31, 2024
The
development
of
narrow-band
emitting
phosphors
is
still
a
pivotal
challenge
for
light-emitting
diode
(LED)
backlights
in
liquid-crystal
displays
(LCDs).
Hereon,
an
effective
tactic
raised
to
develop
novel
violet
emission
Eu2+-doped
BaLiZn3(PO4)3
with
highly
symmetric
site
and
rigid
crystal
structure.
Under
the
ultraviolet
(UV)
light
excitation
334
nm,
this
BLZPO:Eu2+
shows
super
at
387
nm
full
width
half-maximum
(fwhm)
11
7
K
18
298
K,
respectively.
Such
ultranarrow-band
has
never
been
achieved
previous
phosphors.
Moreover,
as-prepared
phosphor
presents
small
photoluminescence
(PL)
thermal
quenching,
its
PL
intensity
maintains
82.6%
150
°C
70%
200
initial
room
temperature.
as-fabricated
LED
utilizing
n-UV
exhibits
potential
anticounterfeiting
application.
This
study
offers
idea
achieve
supernarrow-band
Eu2+-activated
based
on
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(36), С. 47952 - 47960
Опубликована: Авг. 27, 2024
Long-wavelength
near-infrared
(LWNIR)
imaging
technology
has
exciting
application
potential
across
various
fields
due
to
its
ability
of
deeper
penetration
and
unique
properties
related
emission
wavelength,
when
compared
short-wavelength
imaging.
However,
the
limited
availability
materials
for
LWNIR
light
sources,
lack
suitable
host
that
constitute
luminescence
centers,
been
a
major
challenge
technical
obstacle
in
realizing
such
applications.
Here,
we
developed
MgIn
Advanced Optical Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 8, 2025
Abstract
The
ever‐increasing
counterfeiting
issues
have
triggered
a
research
upsurge
in
multi‐modal
fluorescence
anti‐counterfeiting
materials.
All
inorganic
metal
halide
double
perovskites
possess
the
advantages
of
facile
preparation
procedures
and
high
thermal
stability,
which
also
provide
suitable
doping
sites
to
regulate
emission
behavior
highlight
potential
for
serving
as
Herein,
series
Sb
3+
,
Er
Yb
solely
or
codoped
Cs
2
NaLuCl
6
are
successfully
prepared,
optical
properties
dependent
on
ratio
lanthanide
ions
(Ln
).
Notably,
due
participation
energy‐transfer
cross‐relaxation
processes,
tri‐doped
(0.3%Sb
‐20%Er
‐50%Yb
‐Cs
)
shows
luminescence
responses
excitation
sources
with
different
photon
energies,
is
employed
construct
patterns
by
combining
.
Besides
behavior,
NIR
from
can
be
used
night‐vision
device.
Remarkably,
20%Er
‐doped
an
excellent
light
yield
30767
photons
MeV
−1
low
limit
detection
(LoD)
108
nGy
s
highlighting
X‐ray
imaging.
This
work
provides
rational
route
design
multi‐functional
materials
that
anti‐counterfeiting,
night
vision,