Homogeneously Blended Donor and Acceptor AgBiS2 Nanocrystal Inks Enable High‐Performance Eco‐Friendly Solar Cells with Enhanced Carrier Diffusion Length
Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 19, 2025
Abstract
Colloidal
semiconductor
nanocrystals
(NCs)
have
garnered
significant
attention
as
promising
photovoltaic
materials
due
to
their
tunable
optoelectronic
properties
enabled
by
surface
chemistry.
Among
them,
AgBiS
2
NCs
stand
out
an
attractive
candidate
for
solar
cell
applications
environmentally
friendly
composition,
high
absorption
coefficients,
and
low‐temperature
processability.
However,
NC
photovoltaics
generally
exhibit
lower
power
conversion
efficiency
(PCE)
compared
other
NC‐based
devices,
primarily
numerous
traps
that
serve
recombination
sites,
leading
a
short
diffusion
length
free
carriers.
To
address
this
challenge,
work
develops
donor
acceptor
blended
(D/A)
films.
Through
ligand
modulation,
formulates
inks
with
suitable
electrical
band
alignment
charge
separation,
while
ensuring
they
are
fully
miscible
in
the
same
solvent.
This
fabrication
of
high‐quality,
thickness‐controllable
D/A‐blended
junction
finds
approach
effectively
facilitates
carrier
enhanced
lifetime
length.
As
result,
using
approach,
achieves
films
twice
thick
conventional
improvements
current
density
PCE
8.26%.
Язык: Английский
Holistic Design of Charge Transfer Layers for Highly Efficient and Stable AgBiS2 Quantum Dot Photodetectors
Small,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 23, 2025
Abstract
Developing
highly
efficient
and
stable
photodetectors
based
on
eco‐friendly
AgBiS
2
quantum
dots
(QDs)
has
garnered
significant
attention.
However,
optimizing
charge
transfer
layers
(CTLs)
to
enhance
device
performance
stability
remains
a
critical
challenge.
Here,
the
study
presents
development
of
efficient,
stable,
fully
inorganic,
self‐powered
QD‐based
through
holistic
design
CTLs,
consisting
zinc‐copper‐indium‐sulfide
QDs
blended
with
black
phosphorus
nanosheets
as
hole‐transport
layers,
unzipped
carbon
nanotubes
doped
ZnO
nanoparticles
electron‐transport
layers.
The
rationally
designed
CTLs
exhibit
well‐matched
energy‐level
alignment
layer
balanced
mobility,
resulting
in
robust
system.
optimized
exhibits
responsivity
20
mA/W
detectivity
1.9
×
10
Jones
at
1000
nm,
among
best
for
heavy
metal‐free
photodetectors.
all‐inorganic
nature
devices
demonstrates
excellent
over
months
air,
minimal
degradation
performance.
Furthermore,
these
enhanced
are
used
light
sensors
receiver
terminal
near‐infrared
optical
communication
This
work
comprehensive
approach
achieving
superior
long‐term
stability.
Язык: Английский
The Temperature-Dependent Tight Binding Theory Modelling of Strain and Composition Effects on the Electronic Structure of CdSe- and ZnSe-Based Core/Shell Quantum Dots
Materials,
Год журнала:
2025,
Номер
18(2), С. 283 - 283
Опубликована: Янв. 10, 2025
We
propose
a
temperature-dependent
optimization
procedure
for
the
second-nearest
neighbor
(2NN)
sp3s*
tight-binding
(TB)
theory
parameters
to
calculate
effects
of
strain,
structure
dimensions,
and
alloy
composition
on
band
heterostructure
spherical
core/shell
quantum
dots
(QDs).
integrate
thermoelastic
solids
with
2NN
TB
core
shell
binary/ternary
CdSe/Cd(Zn)S
ZnSe/Zn(Cd)S
QDs
at
any
temperature.
show
that
optimized
greatly
improves
prediction
energy
dispersion
curve
in
vicinity
L
X
symmetry
points.
further
used
nanocrystal
bandgaps
QDs.
conclude
provides
remarkable
agreement
measured
accurately
reproduces
curves
electronic
believe
proposed
makes
reliable
accurate
modeling
nanoscale
devices.
Язык: Английский
Optical Gain in Eu-Doped Hybrid Nanocrystals Embedded SiO2-HfO2-ZnO Ternary Glass-Ceramic Waveguides
Spectroscopy Journal,
Год журнала:
2025,
Номер
3(1), С. 3 - 3
Опубликована: Янв. 18, 2025
Rare-earth
doped
transparent
glass-ceramic
waveguides
are
playing
a
very
crucial
role
in
integrated
optics.
We
fabricated
ZnO-HfO2
hybrid
nanocrystals
embedded
with
70
SiO2–(30-x)
HfO2–x
ZnO
(x
=
0,
2,
5
and
7
mol
%)
ternary
1
%
Eu-ions.
The
formation
size
of
the
evolved
an
increase
concentration
waveguides.
In
this
context,
key
factors
such
active
were
optical
losses
transparency.
A
lab-built
m-line
experimental
set-up
was
used
for
characterization
On
other
hand,
gain
measurements
Eu-doped
performed
using
variable
stripe
length
method.
amplification
investigated
on
red
emission
line
(5D0
→
7F2)
Eu-ions
pumped
by
532
nm
laser
stripe-like
geometry
generated
cylindrical
lens.
Here,
we
report,
rare-earth
activated
varying
sizes
formed
increasing
concentration.
Язык: Английский
Janus CsPbBr3–AgBiS2 Heteronanocrystals for High-Efficiency Photodetectors
Nano Letters,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 4, 2025
Heteronanocrystals
(HNCs)
composed
of
colloidal
lead
halide
perovskites
and
chalcogenides
always
offer
unique
photoelectric
properties.
Nevertheless,
synthesizing
perovskite-chalcogenide
HNCs
has
been
a
tough
challenge
due
to
their
completely
different
growth
dynamics.
Here,
we
present
an
effective
strategy
synthesize
Janus
CsPbBr3-AgBiS2
by
in
situ
CsPbBr3
NCs
on
prepared
AgBiS2
quantum
dot
(QDs).
The
as-synthesized
show
large
range
absorption
characteristics
from
visible
near-infrared
(NIR)
wavebands.
Femtosecond
transient
(TA)
spectroscopy
reveals
the
transfer
both
electron
hole
AgBiS2.
enhanced
exciton
dissociation
150
°C
leads
photoconductors
with
drastically
improved
responsivity
(R
183.8
A
W-1)
specific
detectivity
(D*
5.0
×
1014
Jones).
This
work
not
only
provides
reliable
method
for
combining
ionic
covalent
but
also
great
potential
future
practical
applications,
such
as
NC
(QD)
solar
cell.
Язык: Английский
Vacancy-Catalyzed Cation Homogenization for High-Performance AgBiS2 Nanocrystal Solar Cells
ACS Energy Letters,
Год журнала:
2025,
Номер
unknown, С. 2068 - 2074
Опубликована: Апрель 2, 2025
Язык: Английский
Quantum Control of Exciton Motion in Electric Field
Опубликована: Апрель 17, 2025
We
studied
the
quantum
control
of
classical
motion
a
two-dimensional
exciton
by
optimizing
time-dependent
electric
field
stripe-like
gate
acting
on
and
inducing
its
dipole
moment.
propose
search
method
that
significantly
reduces
computational
requirements
while
efficiently
identifying
optimal
parameters.
By
leveraging
this
method,
we
can
precisely
manipulate
exciton’s
final
position
velocity
over
specified
evolution
time.
These
results
be
applied
for
fluxes
populations,
spatially
resolved
light
emission
in
semiconducting
structures.
Язык: Английский
Screening of a Fraction with Higher Amyloid β Aggregation Inhibitory Activity from a Library Containing 210 Mushroom Extracts Using a Microliter-Scale High-Throughput Screening System with Quantum Dot Imaging
Gegentuya Huanood,
Mahadeva M. M. Swamy,
Rina Sasaki
и другие.
Foods,
Год журнала:
2024,
Номер
13(23), С. 3740 - 3740
Опубликована: Ноя. 22, 2024
Alzheimer's
disease
(AD)
is
a
highly
prevalent
neurodegenerative
hallmarked
by
amyloid
plaques
and
neurofibrillary
tangles.
Amyloid
are
formed
the
β
(Aβ)
aggregation,
so
substances
that
inhibit
this
aggregation
useful
for
preventing
treating
AD.
Mushrooms
widely
used
medicinal
fungi
with
high
edible
nutritional
value.
have
variety
of
biologically
active
ingredients,
studies
shown
they
certain
effects
in
anti-bacterial,
anti-oxidation,
anti-inflammatory,
anti-tumor,
immune
regulation.
Previously,
we
developed
microliter-scale
high-throughput
screening
(MSHTS)
system
using
quantum
dot
(QD)
nanoprobes
to
screen
Aβ
inhibitors.
In
study,
appraised
inhibitory
activity
210
natural
mushrooms
from
Hokkaido
(Japan)
found
11
samples
activity.
We
then
selected
Язык: Английский
Preparation of carbon quantum dots/fly ash/steel slag particle electrodes and their performance in rhodamine B removal
Materials Research Express,
Год журнала:
2024,
Номер
11(12), С. 125503 - 125503
Опубликована: Дек. 1, 2024
Abstract
Fly
ash
and
steel
slag
are
industrial
wastes,
their
resourceful
treatment
has
been
challenging.
This
study
generated
fly
ash/steel
particle
electrodes
(FA/SS
PEs)
using
as
raw
materials.
Carbon
quantum
dots
(CQDs)
fabricated
from
semi-coke
were
then
loaded
onto
surface
to
produce
CQDs/FA/SS
PEs.
The
samples
characterized
by
SEM,
nitrogen
adsorption,
XRD,
electrochemical
measurements.
results
show
that
FA/SS
PEs
present
a
favorable
electrocatalytic
performance
for
rhodamine
B
(RhB)
in
the
three-dimensional
reaction
system
owing
rich
pore
structures
an
active
component
(Fe
2
O
3
),
other
metal
oxides
FA
SS
become
backbone
of
during
preparation
process.
CQDs
could
promote
due
defect-rich
high
specific
area.
RhB
degradation
rate
over
increased
approximately
10%
compared
at
time
60
min,
it
reach
100%
pH
45
min
process
mainly
involves
electrochemical-Fenton
PEs,
act
both
electrode
catalyst
Fenton
oxidation.
Язык: Английский