Applied Physics Letters,
Год журнала:
2024,
Номер
125(14)
Опубликована: Сен. 30, 2024
We
developed
a
color-modulated
light-emitting
device
(LED)
by
the
integration
of
p-GaN/n-ZnO
heterojunction
with
reliable
resistive
random
access
memory
(RRAM)
and
demonstrated
multi-function
integrated
adjustable
electroluminescence
(EL)
color
modulating
injection
current
according
to
multiple
resistance
states.
As
critical
foundation
an
device,
operation
was
achieved
introducing
AlOx
layer
into
HfOx
RRAM
as
adjustment
switching
endurance.
Eventually,
EL
LED
effectively
regulated
compliance
RRAM.
Thanks
high
uniformity,
this
modulated
may
be
promising
candidate
for
application
low-cost
high-density
displays
without
complicated
structures
techniques,
it
can
provide
feasible
approach
realization
multilevel
state
feedback
from
varied
in
future.
Advanced Materials,
Год журнала:
2023,
Номер
36(22)
Опубликована: Авг. 29, 2023
Abstract
Semitransparent
organic
photovoltaics
(ST‐OPVs),
owing
to
the
merits
of
high
power
generation,
thermal
insulation,
and
aesthetic
features,
have
become
a
promising
candidate
for
intellectual
building‐
integrated
photovoltaic
windows.
However,
traditional
optical
evaluation
only
focuses
on
transmission
properties
ignores
reflection
behaviors.
And
lack
quantitative
descriptions
array
appearance
hinders
implementation
ST‐OPV
based
large‐area
modules.
To
tackle
with
these
issues,
an
indium
tin
oxide
(ITO)‐free
microcavity
architecture
into
ST‐OPVs
achieving
homogeneity
in
transmittance
controllable
reflective
appearances
through
tunning
thickness
individual
component
layers
is
introduced.
A
set
parameters
characteristics
sub‐units
provide
description
brightness,
transmissive
color
purity,
versatility
arrays,
further
proposed.
The
simulations
reveal
that
modulation
from
blue
red
colors
can
be
realized
devices
various
bulk‐heterojunction
material
systems
regulating
active
antireflection
coatings.
This
work
offers
viable
design
strategy
toward
applications
next‐generation
smart
ACS Energy Letters,
Год журнала:
2024,
Номер
9(3), С. 976 - 984
Опубликована: Фев. 14, 2024
Multifunctional
semitransparent
organic
photovoltaics
(ST-OPVs)
combining
power
generation,
light
transparency,
and
heat
rejection
have
emerged
as
a
promising
technology
for
application
in
building-integrated
photovoltaic
systems,
but
maximizing
all
of
these
features
simultaneously
is
challenging.
Herein,
we
show
that
high-throughput
optical
screening
essential
to
guide
the
design
infrared
reflectors
enhance
their
synergy
with
absorbers.
Taking
advantage
volatile
additive,
1,3,5-trichlorobenzene,
improve
crystallinity
binary
PM6:L8-BO
active
layer,
developed
an
optimized
reflector,
consisting
Na3AlF6
(160
nm)/ZnSe
(190
nm)
bilayer,
which
concomitantly
increases
key
parameters
reflector-free
device.
High-performance
multifunctional
ST-OPVs
conversion
efficiency
15.19%,
average
photopic
transmittance
30.57%,
color
rendering
index
81.86,
rejecting
rate
over
90%
are
demonstrated,
providing
practical
prospects
future
sustainable
systems.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 18, 2024
Abstract
Neutral‐color
semitransparent
organic
photovoltaics
(ST‐OPVs)
offer
potential
opportunities
to
improve
solar
energy
harvesting
in
integrated
buildings.
Here,
high‐performance
multifunctional
neutral‐color
ST‐OPVs
are
successfully
fabricated
by
integrating
a
Ag/TeO
2
/Ag/TeO
‐based
Fabry–Perot
resonant
optical
coating
(FPOC).
Two
coupled
resonators
of
FPOCs
manipulate
two
adjacent
transmission
peaks
the
visible
region
(380–780
nm)
and
high
reflection
from
1200
2500
nm,
revealing
its
excellent
color
rendering
index
(CRI)
tunability
thermal
insulation.
The
75
nm
FPOC‐integrated
ST‐OPV
exhibits
CRI
97.31,
average
transmittance
43.15%,
light
utilization
efficiency
3.90%
with
superior
insulation
properties,
where
highest
total
near‐infrared
solar‐energy‐rejected
dual
functional
efficiencies
2.92%
3.47%,
respectively.
record
value
99.23
is
achieved
for
65
ST‐OPVs.
Attributed
angular
tolerance
FPOC,
exhibit
good
insensitivity
up
±60°.
results
demonstrate
flexibility
multifunctionality
dual‐band‐pass
FPOC
constructing
neutral‐color,
heat‐insulated,
angular‐insensitive
ST‐OPVs,
opening
new
avenue
realization
smart
power
windows.
The
advancement
of
semitransparent
organic
solar
cells
utilizing
narrow
bandgap
donor
and
acceptor
materials
has
progressed
rapidly
in
recent
years.
These
devices
exhibit
high
absorption
the
near‐infrared
range
transmission
visible
region,
offering
broad
application
potential.
This
research
suggests
employing
dual
ultrathin
metal
films
as
transparent
electrodes
to
fabricate
photovoltaic
devices.
investigation
focuses
on
spectral
simulation
modulation
electrode
structure,
film
thickness,
optical
coupling
layer,
1D
photonic
crystal
transfer
matrix
method.
primary
goal
integrated
effects
is
enhance
light
active
layer
while
maintaining
device
transparency.
Simulation
results
indicate
feasibility
a
structure
consisting
Nb
2
O
5
/Ag/Nb
/PM6:BTP‐eC9:L8‐BO/MoO
3
/Ag/ZnSe/Na
AlF
6
/ZnSe,
achieving
an
expected
short‐circuit
current
density
()
17.10
mA
cm
−2
,
average
transmittance
(AVT)
50.40%,
utilization
efficiency
(LUE)
5.49%.
incorporation
three
nonperiodic
dielectric
layers
shows
potential
further
increase
AVT,
LUE
17.40
51.49%,
5.71%,
respectively.
study
introduces
novel
that
optimizes
transmittance,
aiming
advance
Abstract
Smart
photovoltaic
windows
(SPWs)
provide
a
high‐efficiency
and
energy‐saving
strategy
owing
to
the
dual
capabilities
of
electricity
generation
sunlight
modulation
achieved
by
tunable
colors
transmittances.
Due
deterioration
chromic
process
on
layers,
SPWs
usually
suffer
from
poor
cycling
stability.
Moreover,
thermochromic
with
multilayer
structure
change
transmittance
without
reversible
color
transitions.
To
address
these
issues,
inspired
chameleon
skin,
bionic
are
designed
constructed
integrating
hydrogel,
CsPbBr
3
semitransparent
perovskite
solar
cells
(ST‐PSCs),
transparent
polymer
film.
The
realize
transitions
between
green
(25
°C)
opaque
yellow
(45
states
in
short
duration
(2
min)
under
natural
conditions.
By
optimizing
film
ultrathin‐metal
electrodes,
ST‐PSCs
achieve
good
trade‐off
efficiency,
delivering
highest
efficiency
(8.35%)
record
light
utilization
(4.43).
Ultimately,
maintain
stable
optical
properties
more
than
88%
initial
conversion
after
100
transition
cycles,
presenting
excellent
This
study
proposes
novel
approach
device
for
high
stability,
switchable
colors,
It
also
paves
way
smart
deployment
buildings
many
other
fields.
Enhancing
the
stability
and
optical
tailorability
of
semitransparent
organic
solar
cells
(ST-OSCs)
is
crucial
for
building-integrated
photovoltaics.
In
this
work,
we
propose
a
smart
design
realizing
stable
color-tunable
all-polymer
ST-OSCs
through
integrating
self-assembled
MeO-2PACZ
layer
capped
in
conjunction
with
an
optically
engineered
coupling
structure
(dielectric
layer/metal/dielectric
layer).
Owing
to
effective
blocking
interfacial
diffusion
metal
ions,
devices
receive
considerable
gains
stability,
as
manifested
by
retention
90%
initial
efficiency
after
4000
h
under
storage
82%
600
at
maximum
power
point
tracking.
The
enables
independent
modulation
reflective
properties
while
maintaining
high
transmittance
neutrality.
This
results
colorful
wide
chrominance
range
peak
light
utilization
3.62%,
among
best
ST-OSCs.
strategy
advances
next-generation,
sustainable
photovoltaic
windows.
Abstract
Semitransparent
organic
photovoltaics
(ST‐OPVs)
hold
great
promise
for
building‐integrated
applications
but
encounter
a
critical
trade‐off
between
power
conversion
efficiency
(PCE)
and
visible
transparency.
This
work
addresses
this
challenge
by
introducing
novel
theoretical
framework
that
synergistically
combines
optical
modeling
material
design.
A
piecewise
Gaussian
absorption
model
has
been
developed
to
accurately
simulate
asymmetric
spectral
characteristics
of
materials.
enables
the
virtual
screening
potential
donor‐acceptor
configurations,
identifying
two
optimal
configurations:
narrow‐narrow
(N
+
N)
system
wide‐narrow
(W
system,
which
achieve
superior
balance
PCE
High‐throughput
bilayer
coupling
layers
further
enhances
light
utilization
9.8%
9.3%
through
optimized
management.
study
bridges
properties
engineering,
providing
predictive
tool
ST‐OPV
optimization
guide
development
high‐performance,
visually
transparent
solar
technologies.
Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 30, 2025
Abstract
Discerning
loss
mechanisms
in
organic
solar
cells
with
narrow
optical
bandgap
is
critical
for
the
development
of
conventional
and
next‐generation
photovoltaic
technologies,
especially
tandem
semi‐transparent
cells.
Here,
all
photocurrent
losses
are
quantitatively
deconvoluted
two
low‐bandgap
(
E
g
≈1.23
eV)
binary
systems
using
structurally
analogous
non‐fullerene
acceptors
(NFAs),
namely
BTPV‐4F‐eC9
BTPV‐4Cl‐eC9.
Bias‐dependent
free
charge
generation
photoluminescence
studies
pinpoint
geminate
transfer
(CT)
state
recombination
as
predominant
limitation
both
systems,
compared
to
parent
Y6‐blends.
Transient
absorption
spectroscopy
too
reveals
a
competition
between
CT
decay
separation
dynamics.
Theoretical
calculations
uncover
multiple
stable
molecular
conformers
that
restrict
NFA
aggregation,
aligning
morphological
studies,
resulting
poor
photoactive
blends.
Owing
pathways,
closer
Langevin
limit
than
PM6:Y6.
Nonetheless,
they
exhibit
overall
voltage
≈0.56
V
comparable
PM6:Y6,
efficient
exciton
dissociation
despite
lower
driving
force.
Current–voltage
simulations
show
suppressing
can
vitally
balance
pathways
unlock
potential
Further
optimization
carrier
mobility
would
push
PCE
>16%,
moving
internal
quantum
efficiency
toward
detailed
limit.
