Investigating the influence of carbon dots on β-Ca2SiO4:Ce3+ phosphors derived from agro-waste for diverse applications
Sustainable materials and technologies,
Год журнала:
2024,
Номер
41, С. e00993 - e00993
Опубликована: Май 31, 2024
Язык: Английский
Quantum Dot Luminescence Microspheres Enable Ultra‐Efficient and Bright Micro‐LEDs
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 21, 2025
Abstract
Quantum
dot
(QD)‐converted
micrometer‐scale
light‐emitting
diodes
(micro‐LEDs)
are
regarded
as
an
effective
solution
for
achieving
high‐performance
full‐color
micro‐LED
displays
because
of
their
narrow‐band
emission,
simplified
mass
transfer,
facile
drive
circuits,
and
low
cost.
However,
these
micro‐LEDs
suffer
from
significant
blue
light
leakage
unsatisfactory
electroluminescence
properties
due
to
the
poor
conversion
efficiency
stability
QDs.
Herein,
construction
green
red
QD
luminescence
microspheres
with
simultaneously
high
strong
photoluminescence
proposed.
These
exhibit
external
quantum
yields
exceeding
46%
under
450
nm
excitation,
along
excellent
reliability
against
light,
heat,
water‐oxygen
degradation,
owing
waveguide
spatial
confinement
effects
microspheres.
The
microsphere‐based
achieve
world‐record
efficiencies
40.8%
22.1%,
respectively,
brightness
values
1.7
×
10
8
7.6
7
cd
m
−2
,
respectively.
Finally,
0.6
inch
red,
green,
monochrome
demonstrated
by
integrating
microsphere‐converted
arrays
thin‐film
transistor
backplanes,
which
show
a
pixel
resolution
1700
PPI
000
.
Язык: Английский
PbTe quantum dots highly packed monolayer fabrication by a spin coating method
PLoS ONE,
Год журнала:
2025,
Номер
20(2), С. e0317677 - e0317677
Опубликована: Фев. 11, 2025
This
study
investigates
the
fabrication
of
large-area,
highly-ordered
monolayers
PbTe
quantum
dots
(QDs)
on
TiO
2
/ITO
substrate,
using
a
fast,
simple,
and
repeatable
spin-coating
technique.
For
first
time,
real
monolayer
(a
layer
with
height
single
QD)
covering
approximately
3
cm
was
successfully
prepared,
achieving
root-mean-square
roughness
(Rq)
1.37
nm.
The
research
systematically
explores
key
parameters
such
as
QD
morphology,
concentration,
conditions,
substrate
characteristics,
wetting
properties,
solvent
effects
to
optimize
thin
film
deposition.
findings
reveal
that
method
favors
formation
layers
spherical
QDs
(6–9
nm)
over
cubical
(10–13
nm).
highlight
significant
influence
evaporation
rate,
viscosity,
wettability
quality.
Chloroform
identified
optimal
for
(~90%
coverage),
while
hexane
more
effective
(90%-100%
coverage).
Beyond
monolayers,
high-quality
bilayers
were
also
fabricated,
demonstrating
method’s
potential
multilayer
fabrication.
rapid
efficient
bilayer
marks
breakthrough
in
producing
uniform,
large-area
films,
facilitating
seamless
integration
existing
technologies.
It
offers
scalable
cost-effective
solution,
opening
door
broader
applications
fields
demand
Язык: Английский
Supramolecular Assembly of Hydrogen-Bonded Organic Frameworks with Carbon Dots: Realizing Ultralong Aqueous Room-Temperature Phosphorescence for Anticounterfeiting
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(35), С. 46609 - 46618
Опубликована: Авг. 22, 2024
Room-temperature
phosphorescent
carbon
dots
(RTP-CDs)
have
received
increasing
attention
due
to
their
excellent
optical
properties
and
potential
applications.
Nevertheless,
the
realization
of
RTP-CDs
in
aqueous
solutions
remains
a
considerable
challenge
water-molecule-
oxygen-induced
deactivation
triplet
excitons,
which
leads
phosphorescence
quenching.
In
this
study,
ultralong
water
was
achieved
by
situ
self-assembly
CDs
encapsulated
rigid
hydrogen-bonded
organic
framework
(HOF).
The
lifetime
reaches
an
impressive
956.96
ms
exhibits
long-lasting
structural
stability
for
more
than
90
days.
composite
material
not
only
has
luminescence
life
but
also
two-color
emission,
as
well
antiphotobleaching
solution,
can
solve
current
problem
that
RTP
is
easily
burst
out
moisture.
addition,
study
introduced
fluorescent
dye
based
on
triplet–singlet
Förster
resonance
energy
transfer
system
(TS-FRET)
fine-tune
afterglow
properties.
This
work
will
inspire
design
systems
with
dual
phosphor
light
sources
provide
new
strategies
development
smart
materials
water.
Язык: Английский