Flexible and Wearable Devices Based on Colloidal Quantum Dots
Advanced Materials Technologies,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 20, 2025
Abstract
A
significant
class
of
semiconductor
nanostructures,
colloidal
quantum
dots
(CQDs),
which
exhibit
narrow
emission
spectrum
and
tunable
frequency,
are
utilized
for
numerous
flexible
wearable
applications
including
state‐of‐the‐art
display,
biological
sensing,
showcasing
great
prospects
in
physiological
measurement,
health
monitoring,
rehabilitation.
Interestingly,
synthesizing
these
particles
using
methods
such
as
hot
injection
colloids
can
directly
tune
their
optical
properties
wavelengths
by
controlling
sizes,
greatly
contributes
to
materials
production
simplicity
scalability.
Importantly,
from
a
device
perspective,
due
the
advantages
solution‐processed
synthesis,
patterning
inkjet
printing,
CQDs
be
combined
with
soft
polymeric
substrates,
or
hierarchical
structures
facile
manner,
offering
extraordinary
flexibility
portability.
As
optoelectronic
devices,
CQD
function
photoresistors,
phototransistors,
through
other
mechanisms
convert
light
between
forms
energy,
enabling
highly
sensitive
detection
applications.
In
this
Review,
synthetic
approaches
summarized
CQDs,
fabrication
techniques,
mechanisms,
application
scenarios.
Furthermore,
challenges
associated
technologies,
stability
cost‐efficiency
discussed,
present
outlook
on
future
trends
devices
multi‐functional
integration,
constituent
component
devices.
Язык: Английский
Recent Advancement in Development of Nitrogen-Doped CQDs for Dye Sensitized Solar Cell and Photodetector. A review
Surfaces and Interfaces,
Год журнала:
2025,
Номер
unknown, С. 105913 - 105913
Опубликована: Янв. 1, 2025
Язык: Английский
UV-Resistant Nanostructured Anti-reflective Film for Achieving Efficiency Enhancement of Perovskite Solar Cells and Potential of Fabricating Large-Scale Cu(In, Ga)Se2 Solar Cells
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 28, 2025
Sticker-type
transparent
antireflective
film
(STAF)
is
applied
to
perovskite
solar
cells
(PSCs)
reduce
the
reflection
and
improve
light-trapping
ability
of
PSCs.
However,
development
STAF
hindered
by
many
factors,
such
as
expensive
materials,
low
actual
service
life,
unsatisfactory
effect,
a
lack
research
on
stability.
This
work
proposes
an
ultraviolet
(UV)-resistant
enhanced
sticker-type
nanostructure
acrylic
resin
(SNAAF),
which
incident
surface
SNAAF
prepared
using
cleverly
designed
two-step
peeling
transfer
process.
The
average
reflectance
related
device
reduced
4.06%
through
entire
visible
light
spectrum,
also
helps
achieve
champion
performance
PSCs
with
STAF.
excellent
antireflection
increases
power
conversion
efficiency
(PCE)
from
20.77%
22.1%
owing
significantly
short-circuit
current
density
5.5%
SNAAF.
Additionally,
target
maintains
nearly
80%
its
initial
PCE
after
480
h
irradiation
UV
(365
nm),
far
exceeding
exposure
levels
in
IEC
61215.
Moreover,
applicable
large-area
Cu(In,
Ga)Se2
(CIGS)
(area:
225
cm2),
develops
practical
external
engineering
strategy
for
optimizing
different
types
commercial
cells.
Язык: Английский
Enhanced UV Stability of Perovskite Solar Modules via Downshifting Luminescent Organic–Inorganic Copper Halide Film with Near‐Unity Efficiency
Small,
Год журнала:
2025,
Номер
21(11)
Опубликована: Фев. 14, 2025
Abstract
Obtaining
efficient
perovskite
solar
modules
(PSMs)
with
enhanced
UV
stability
is
essential
for
their
practical
applications,
yet
remains
a
significant
challenge.
In
this
work,
highly
organic–inorganic
copper
halide
downshifting
film
that
significantly
enhances
the
of
PSMs
demonstrated
by
converting
high‐energy
harmful
photons
into
beneficial
visible
light
contribute
to
photovoltaic
performance.
The
tetrapropylammonium
(TPA)
cation
selected
as
main
framework
synthesize
series
halides,
denoted
Br
x
I
y
.
A
near‐unity
photoluminescence
quantum
yield
(PLQY)
99.51%
can
be
achieved
precisely
controlling
Br/I
ratio
2:4,
2
4
,
which
one
highest
values
reported
date.
dual
self‐trapped
excitons
(STEs)
luminescence
mechanism
systematically
investigated
both
temperature‐dependent
and
pressure‐dependent
experiments.
This
dual‐STEs
enables
efficiently
absorb
re‐emit
photons,
thereby
mitigating
photodegradation
induced
light.
Finally,
effective
layer.
an
optimal
efficiency
22.24%,
maintaining
over
90%
initial
after
exposure
total
dose
66.07
kWh
m
−2
Язык: Английский
Optimizing UV Resistance and Defect Passivation in Perovskite Solar Cells with Tailored Tin Oxide
Small,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 18, 2025
Abstract
Tin
oxide
(SnO
2
)
as
an
electron
transport
layer
(ETL)
has
garnered
significant
attention
in
planar
perovskite
solar
cells
(PSCs)
for
its
excellent
physical
and
chemical
properties,
paving
commercial
potential.
However,
drawbacks,
such
surface
defects
photocatalytic
properties
due
to
wide
band
gap,
remain
unresolved.
Under
ultraviolet
(UV)
light,
SnO
induces
phase
transitions
at
the
interface,
compromising
device
stability.
In
this
study,
fluorescent
dopant
sodium
2,2′‐([1,1′‐Biphenyl]‐4,4′‐Diylbis
(Ethene‐2,1‐Diyl))
Dibenzenesulfonate
(CF351)
is
introduced
into
Solution
first
time.
With
UV
absorption,
CF351
effectively
blocks
reducing
‐induced
degradation.
Perovskite
films
on
CF351‐doped
show
remarkable
stability
under
continuous
irradiation
(365
nm)
32
days,
resistance
transition
improved
by
100%.
PSCs
retaining
80.8%
of
their
initial
power
conversion
efficiency
(PCE)
after
≈1000
h
exposure,
compared
only
18.7%
control.
Additionally,
passivates
interfacial
defects,
regulates
crystallization,
optimizes
energy
levels.
It's
down‐conversion
capability
also
enhances
photocurrent
generating
extra
visible
photons.
As
a
result,
achieve
PCE
22.59%,
significantly
surpassing
20.42%
control
devices.
This
work
provides
effective
strategy
preparing
highly
efficient
stable
PSCs.
Язык: Английский
Characterization of Green-Synthesized Carbon Quantum Dots from Spent Coffee Grounds for EDLC Electrode Applications
Chemical Physics Impact,
Год журнала:
2024,
Номер
unknown, С. 100767 - 100767
Опубликована: Окт. 1, 2024
Язык: Английский
Waste-Derived Carbon Quantum Dots for Improving the Photostability of Perovskite Solar Cells to > 1000 hours
Materials Today Energy,
Год журнала:
2024,
Номер
44, С. 101654 - 101654
Опубликована: Июль 29, 2024
Язык: Английский
Direct Laser Interference Patterning of Fluorine‐Doped Tin Oxide as a Pathway to Higher Efficiency in Perovskite Solar Cells
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 9, 2024
Abstract
Improving
light‐trapping
capabilities
through
surface
microstructuring
of
transparent
conductive
oxides
is
a
promising
approach
to
enhance
solar
cell
efficiency.
This
study
focuses
on
treating
fluorine‐doped
tin
oxide
(FTO)
thin
films
using
four‐beam
direct
laser
interference
patterning
(DLIP)
create
dot‐like
periodic
microstructures.
The
analysis
scanning
electron
microscopy
and
confocal
reveals
the
presence
square
grid
microcraters
with
spatial
period
≈700
nm
an
average
depth
ranging
between
4
18
nm.
These
structures
dispersion
incoming
light
up
1000%
in
visible
NIR
spectra.
When
integrated
into
metal
halide
perovskite
cells,
FTO
patterned
low
fluence
conditions
lead
notable
increase
power
conversion
efficiencies
(PCEs)
compared
those
made
untreated
FTO.
Importantly,
preliminary
stability
tests
devices
based
substrates
show
significantly
improved
fabricated
reference
unpatterned
substrates.
findings
demonstrate
that
DLIP
treatment
technique
can
substantially
efficiency
photovoltaic
devices.
Язык: Английский
Stability Optimization for Perovskite Solar Cells with Two‐Dimensional Materials
Yiming Zheng,
Yue Ran,
Faming Xu
и другие.
Solar RRL,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 6, 2024
Metal
halide
perovskites,
an
emerging
photovoltaic
material,
have
attracted
significant
attention
in
the
industry
and
academia
due
to
their
excellent
optoelectronic
properties.
However,
perovskite
solar
cells’
(PSCs)
stability
has
become
biggest
obstacle
commercialization
despite
progress
commercial
development.
Interface
engineering,
doping,
novel
charge‐transport
materials
are
effective
approaches
enhance
of
PSCs.
Since
discovering
graphene
as
a
single‐layer
researchers
favored
two‐dimensional
(2D)
for
outstanding
physical
chemical
In
continuous
development
PSCs,
2D
offer
tunable
functional
groups,
energy
levels,
high
charge
transfer
capabilities,
extraordinary
characteristics
such
thermal
conductivity
hydrophobicity.
They
serve
improve
Different
types
may
exhibit
unprecedented
effects
through
different
designs.
this
review,
specific
mechanisms
which
cells
focused
on
recent
advancements
improving
PSC
across
various
dimensions
summarized,
including
photo,
thermal,
environmental
stability,
potential
applications
discussed.
Finally,
insights
offered
into
addressing
stability‐related
challenges
This
comprehensive
approach
aims
guide
future
research
efforts
optimizing
both
performance
PSCs
integration
materials.
Язык: Английский