Advanced Physics Research,
Journal Year:
2024,
Volume and Issue:
3(7)
Published: May 9, 2024
Abstract
High‐energy
blue
light
is
highly
detrimental
to
health
as
it
can
penetrate
the
lens
into
retina,
potentially
causing
atrophy
or
even
death
of
retinal
pigment
epithelial
cells.
To
prevent
harmful
effects
high‐energy
on
our
health,
here
preparation
a
photoconversion
film
specifically
designed
block
reported,
which
composed
green‐emissive
carbon
dots
(G‐CDs)
with
high
photoluminescence
quantum
yield
(PLQY
=
95%)
dispersed
in
polyvinyl
alcohol
(PVA)
matrix.
Notably,
such
(named
G‐CDs@PVA)
not
only
converts
an
incident
laser
short
wavelength
fluorescence
longer
wavelength,
but
also
exhibits
concentration‐dependent
(0,
10,
20,
and
30
wt.%)
barrier
rate
intensity.
With
increase
concentration
G‐CDs
film,
well
maximum
intensity
green
emission
are
increased.
When
reaches
wt.%,
G‐CDs@PVA
achieves
up
97%.
Furthermore,
attached
light‐emitting
diode
(LED)
chip
explore
its
practical
application
field
blocking
damage.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(29)
Published: Feb. 20, 2024
Abstract
Rechargeable
Zn‐based
batteries
provide
a
compelling
supplement
to
subsistent
energy
storage
devices
owing
their
high
density,
good
safety,
and
low
cost.
Nevertheless,
inherent
imperfections
such
as
dendrite
growth,
side
reactions,
andante
reaction
kinetics,
severely
impede
commercialization.
As
new
0D
nanomaterials,
carbon
dots
(CDs)
with
unique
characteristics
excellent
electrochemical
activity,
exhibit
promising
potential
exploitation
in
electrochemistry
electrocatalysis
areas.
Herein,
the
adhibition
of
CDs
resolving
aforementioned
drawbacks
is
introduced.
To
begin
with,
concepts,
physicochemical
properties,
synthetic
methods
are
discussed.
Next,
recent
developments
advances
exploiting
respectively
ameliorating
performance
Zn
anode,
cathode,
electrolytes
ion
bifunctional
electrocatalytic
activities
including
oxygen
reduction
evolution
for
Zn‐air
batteries,
roundly
reviewed
minutely
generalized.
Finally,
current
challenges
prospects
surveyed
well,
aiming
offer
reference
blossom
advanced
batteries.
Small,
Journal Year:
2024,
Volume and Issue:
20(24)
Published: March 28, 2024
Abstract
The
process
of
N‐doping
is
frequently
employed
to
enhance
the
properties
carbon
quantum
dots.
However,
precise
requirements
for
nitrogen
precursors
in
producing
high‐quality
N‐doped
dots
(NCQDs)
remain
undefined.
This
research
systematically
examines
influence
various
dopants
on
morphology,
optical
features,
and
band
structure
NCQDs.
are
synthesized
using
an
efficient,
eco‐
friendly,
rapid
continuous
hydrothermal
flow
technique.
method
offers
unparalleled
control
over
synthesis
doping,
while
also
eliminating
convention‐related
issues.
Citric
acid
used
as
source,
urea,
trizma
base,
beta‐alanine,
L‐arginine,
EDTA
sources.
Notably,
urea
produced
NCQDs
with
excitation‐independent
fluorescence,
high
yields
(up
40%),
uniform
narrow
particle
size
distributions.
Density
functional
theory
(DFT)
time‐dependent
DFT
modelling
established
that
defects
substituents
within
graphitic
have
a
more
significant
impact
NCQDs’
electronic
than
nitrogen‐containing
groups.
Importantly,
first
time,
this
work
demonstrates
conventional
approach
single‐layer
structures
insufficient,
but
two
layers
suffice
replicating
experimental
data.
study,
therefore,
provides
essential
guidance
selection
NCQD
customization
diverse
applications.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 12, 2025
Abstract
Luminescent
solar
concentrators
(LSCs)
can
convert
sunlight
to
clean
energy
by
serving
as
large‐area
collectors
of
sunlight.
Benefiting
from
their
large‐area,
semi‐transparency,
and
lightweight
characteristics,
LSCs
have
gained
a
great
attention.
However,
optical
efficiency
is
limited
the
low
quantum
yield
(QY)
small
Stokes
shift
conventional
photoluminescent
materials.
Carbon
dots
(C‐dots)
are
promising
alternatives,
yet
achieving
both
high
QY
large
has
proven
challenging.
Here,
simple,
controllable
vacuum
heating
method
introduced
synthesize
highly
efficient
C‐dots
using
citric
acid‐urea‐cyanuric
acid‐CaCl
2
system.
The
cyanuric
acid‐capped
exhibit
outstanding
properties,
including
94.3%
in
solution
100%
polymer
matrix,
0.64
eV,
exceptional
photostability,
making
them
ideal
for
LSC
applications.
Ultrafast
transient
absorption
spectroscopy
provides
insights
into
exciton
dynamics.
An
(25
cm
)
based
on
these
achieves
an
13.82%
±
0.30%,
while
its
attached
photovoltaic
cell
attains
power
conversion
4.82%
0.10%
under
natural
(80
mW
−2
),
marking
highest
performance
reported
C‐dot‐based
LSCs.
These
results
highlight
potential
advanced
solid‐state
lighting
technologies.
Nanomaterials,
Journal Year:
2025,
Volume and Issue:
15(6), P. 436 - 436
Published: March 12, 2025
It
is
of
great
significance
to
develop
carbon
quantum
dots
(CQDs)
using
green
sources,
which
are
cheap,
non-toxic
and
harmless,
further
expand
their
application
scopes,
e.g.,
fluorescence
sensors,
blue
light
screening.
In
this
study,
we
have
prepared
Peperomia
tetraphylla-based
(PT-CQDs)
with
strong
water
solubility,
good
salt
resistance,
specific
quenching
reactions
excellent
optical
properties
via
a
simple
one-step
hydrothermal
method.
one
application,
PT-CQDs
utilized
as
sensor
due
high
selectivity
sensitivity
ferric
ions
(Fe3+).
The
limit
detection
(LOD)
was
2.7
μmol·L−1.
On
the
other
hand,
PT-CQDs/polyvinyl
alcohol
(PVA)
films
ultraviolet-
(UV)
high-energy
(HEBL)-blocking
were
obtained.
obtained
exhibited
weight
blocking
rate
100%
in
UV
80%
HEBL.
concentrations
composites
could
also
be
controlled
achieve
desired
light-blocking
rate.
addition,
able
absorb
convert
it
forms
light.
These
suggest
potential
applications
development
advanced
screening
sensors.
