ECS Journal of Solid State Science and Technology,
Journal Year:
2023,
Volume and Issue:
12(11), P. 116003 - 116003
Published: Nov. 1, 2023
The
400–500
nm
blue
light
and
630–750
red
play
crucial
roles
in
plant
cultivation.
In
this
work,
a
high
efficiency
red-emitting
phosphor,
Li
0.5
La
SrMgWO
6
:Mn
4+
,
Pr
3+
was
synthesized
through
the
solid-state
reaction
technique.
absorption
excitation
spectra
were
measured,
indicating
that
467
an
suitable
wavelength
for
material.
Upon
with
LED,
fluorescence
characteristics
evaluated,
revealing
dual-band
emission
peaks
located
at
621–654
695–710
nm.
quantum
pumping
slope
measured
to
be
63%
35%,
respectively.
Based
on
energy
level
theory
Tanabe-Sugano
theory,
mechanism
analyzed,
cross
relaxation
phenomenon
contributed
efficiency.
temperature
sensing
property
also
demonstrated.
relative
sensitivity
(Sr)
exhibited
significant
change
from
0.05%
K
−1
0.85%
different
temperatures.
phosphor’s
exceptional
confer
it
extensive
potential
applications
fields
of
cultivation
display
technology.
Molecules,
Journal Year:
2024,
Volume and Issue:
29(6), P. 1402 - 1402
Published: March 21, 2024
Mn4+-doped
red-light-emitting
phosphors
have
become
a
research
hotspot
that
can
effectively
enhance
photosynthesis
and
promote
morphogenesis
in
plants.
Herein,
the
red
phosphor
La3Mg2NbO9:Mn4+
was
synthesized
through
solid-state
reaction
method.
The
effects
of
adding
H3BO3
charge
compensator
R+
(R
=
Li,
Na,
K)
on
crystal
structure,
morphology,
quantum
efficiency,
luminous
performance
were
systematically
analyzed,
respectively.
results
showed
flux
improved
efficiency
luminescence
intensity.
emission
intensity
enhanced
about
5.9
times
when
Li+
used
as
compensator,
while
it
240%
with
addition
flux.
Remarkably,
also
found
simultaneously
thermal
stability
at
423
K
from
47.3%
to
68.9%.
prototype
LED
fabricated
using
La3Mg2NbO9:Mn4+,H3BO3,Li+
exhibited
perfect
overlap
phytochrome
absorption
band
for
plant
growth.
All
these
indicate
has
great
potential
use
agricultural
lighting.
Inorganic Chemistry,
Journal Year:
2023,
Volume and Issue:
63(1), P. 803 - 811
Published: Dec. 19, 2023
Zero-dimensional
(0D)
organic–inorganic
hybrid
halides
present
many
fascinating
photophysical
properties
for
promising
optoelectronic
applications
such
as
light-emitting
diodes
(LEDs),
X-ray
imaging,
photodetectors,
and
anticounterfeiting.
Herein,
a
centimeter-sized
single
crystal
(C6H10N2)2MnCl6·2H2O
with
0D
perovskite
structure
was
obtained
via
solvent
evaporation
method.
A
bright
red
emission
at
618
nm
larger
Stokes
shift
of
more
than
300
long
fluorescence
lifetime
6.21
ms
were
measured.
Notably,
reversible
PL
switching
from
to
nonluminescence
has
been
presented
in
the
cycles
heating–cooling
processes
RT
100
°C.
Furthermore,
temperature-induced
luminescence
shows
quick
recovery
after
20
conversion
cycles,
exhibiting
excellent
stability
temperature
sensing.
According
structural
theoretical
analyses,
is
primarily
due
hydrogen-bonding
interactions
between
(MnCl6)4–
H2O
molecules.
Particularly,
anticounterfeiting
application
designed
based
on
its
temperature-dependent
switching.
Importantly,
ultraviolet-pumped
LEDs
fabricated
by
crystals
are
perfectly
achieved.
Anyway,
this
work
clearly
demonstrates
that
Mn-based
greatly
extends
potential
electro-optical
display,
sensing,
devices.
RSC Advances,
Journal Year:
2025,
Volume and Issue:
15(9), P. 7039 - 7049
Published: Jan. 1, 2025
Mn4+-activated
phosphors
have
been
attracted
to
replace
the
rare-earth-activated
in
use
of
deep-red
optical
devices.
Owing
their
low
toxicity
and
wide
applications,
oxide
materials
are
promising
hosts
for
Mn4+
phosphors.
Exploration
into
novel
oxides
is
important
developing
new
Mn4+-doped
with
high
luminescent
efficiencies.
In
this
study,
we
discovered
emitting
phosphor
SrCa2Ga2O6:Mn4+
Sr3Ga2O6-Ca3Ga2O6
solid
solution
system.
From
single
crystal
X-ray
diffraction
analysis,
was
found
crystallize
a
cubic
unit
cell
space
group
F432.
Furthermore,
revealed
be
member
tululite
structure-related
phosphors,
such
as
Ca14Zn6Al10O35:Mn4+,
Ca14Zn6Ga10O35:Mn4+,
Ca14Mg4Ga12O36:Mn4+.
To
study
fundamental
luminescence
properties,
synthesized
powder
samples
via
conventional
solid-state
reaction
method.
has
an
absorption
band
region
250-550
nm,
shows
emission
peaks
at
712
nm.
The
excitation
well
matched
wavelength
near-ultraviolet
blue
light
diodes.
optimized
sample
exhibited
quantum
efficiency
good
thermal
quenching
properties.
This
excellent
potential
expected
used
commercial
indoor
plant
cultivation
down-convertor
solar-cells.
Molecules,
Journal Year:
2025,
Volume and Issue:
30(7), P. 1569 - 1569
Published: March 31, 2025
In
order
to
break
through
the
limitations
of
application
traditional
temperature
measurement
technology,
non-contact
optical
sensing
material
with
good
sensitivity
is
one
current
research
hotspots.
Herein,
a
series
Dy3+
and
Mn4+
co-doping
Mg3Ga2SnO8
fluorescent
materials
were
prepared
successfully,
crystal
structure,
phase
purity,
morphology
synthesized
phosphors
comprehensively
investigated,
as
well
their
photoluminescence
properties,
energy
transfer,
high-temperature
thermal
stability.
The
two
pairs
independent
thermally
coupled
levels
ions
in
are
utilized
realize
dual-mode
detection
excellent
performance.
On
hand,
based
on
different
ionic
level
transitions
4F9/2→6H13/2
2Eg→4A2g
responding
differently
temperature,
emission
bands
577
nm
668
chosen
construct
fluorescence
intensity
ratio
thermometry,
maximum
1.82
%K−1
was
achieved
at
473
K.
other
strong
dependence
lifetime
Mg3Ga2SnO8:0.06Dy3+,0.009Mn4+,
thermometry
constructed
2.75
Finally,
Mg3Ga2SnO8:
0.06Dy3+,0.009Mn4+
sample
realizes
high
wide
range,
indicating
that
has
promising
applications
measurement.
