Inorganic Chemistry,
Год журнала:
2024,
Номер
63(19), С. 8764 - 8774
Опубликована: Апрель 30, 2024
In-based
halide
perovskites
have
attracted
a
lot
of
attention
because
their
unique
broadband
emission
properties.
Herein,
series
hybrid
(H2MP)2InCl7·H2O
(1),
(H2EP)2InCl7·H2O
(2),
(H2MP)2InBr7·H2O
(3),
and
(H2EP)2InBr7·H2O
(4)
were
synthesized
under
the
control
halogen
ions
organic
cations.
1,
2,
4
exhibit
obvious
photoluminescence
properties
with
peaks
at
392,
442,
652
nm,
respectively.
The
effects
different
components
on
crystal
structure
are
discussed
by
calculating
structural
distortion
[InX6]3–
octahedron.
1
significantly
improved
after
Sb3+
doping
PLQY
values
57.12
41.53%.
Finally,
white
LED
was
successfully
fabricated
two
doped
compounds
coated
onto
365
nm
blue
chip.
Abstract
Near‐infrared
(NIR)
luminescent
metal
halide
(LMH)
materials
have
attracted
great
attention
in
various
optoelectronic
applications
due
to
their
low‐temperature
solution‐processable
synthesis,
abundant
crystallographic/electronic
structures,
and
unique
properties.
However,
some
challenges
still
remain
luminescence
design,
performance
improvement,
application
assignments.
This
review
systematically
summarizes
the
development
of
NIR
LMHs
through
classifying
origins
into
four
major
categories:
band‐edge
emission,
self‐trapped
exciton
(STE)
ion
defect‐related
emission.
The
mechanisms
different
types
are
discussed
detail
by
analyzing
typical
examples.
Reasonable
strategies
for
designing
optimizing
luminescence/optoelectronic
properties
summarized,
including
bandgap
engineering,
self‐trapping
state
chemical
composition
modification,
energy
transfer,
other
auxiliary
such
as
improvement
synthesis
scheme
post‐processing.
Furthermore,
prospects
based
on
devices
revealed,
phosphor‐converted
light‐emitting
diodes
(LEDs),
electroluminescent
LEDs,
photodetectors,
solar
cells,
x‐ray
scintillators,
well
demonstrations
related
practical
applications.
Finally,
existing
future
perspectives
LMH
critically
proposed.
aims
provide
general
understanding
guidance
design
high‐performance
materials.
image
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(34)
Опубликована: Июнь 6, 2024
Abstract
Hybrid
metal
halides
(HMHs)
have
emerged
as
a
promising
platform
for
optically
functional
crystalline
materials,
but
it
is
extremely
challenging
to
thoroughly
elucidate
the
electron
transition
coupled
additional
ligand
emission.
Herein,
discover
sequences
of
lead‐free
HMHs
with
distinct
active
cations
are
aimed,
that
is,
Sb
3+
(5s
2
)
lone‐pair
configuration
and
In
(4d
10
fully‐filled
configuration.
(Me
NH
4
M
Cl
6
·Cl
=
−CH
3
,
Sb,
In)
exhibits
superior
temperature/component‐dependent
luminescence
behaviors
resulting
from
competition
between
triplet‐states
(T
n
‐S
0
self‐trapped
excitons
(STEs)
inorganic
units
singlet‐state
(S
1
organic
cations,
which
manipulated
by
optical
activity
levels
[SbCl
]
3−
[InCl
.
The
bonding
differences
/In
−
in
terms
electronic
excitation
hybridization
emphasized,
different
electron‐transition
mechanisms
established
according
PL
spectra
at
extreme
temperature
5
305
K
theoretical
calculations.
By
fine‐tuning
B‐site
alloying,
photoluminescence
quantum
yield
(PLQY
81.5%)
stability
optimized
20%
alloying
This
research
sheds
light
on
rules
governing
HMHs,
well
exploring
optical‐functional
application
aviation
sensors
access‐control
systems.
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
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.
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
