Advanced Functional Materials,
Год журнала:
2023,
Номер
33(46)
Опубликована: Сен. 1, 2023
Abstract
Smart
window
is
promising
to
save
building
energy
and
reduce
carbon
emissions.
The
fast
development
leads
a
high
demand
for
multifunctionality
not
limited
saving,
while
the
material
design
fabrication
are
challenging.
Herein,
scalable
method
developed
tri‐mode
light
regulations:
thermo‐,
mechano‐,
hydro‐/solvato‐chromisms.
film
constructed
of
bio‐inspired
hierarchical‐structured
surface
functional
elastomer
base.
Through
combined
experiments
simulations,
triple‐stimuli‐chromic
mechanisms
strain‐induced
structure
deformations,
wettability‐controlled
reflective
index
matches,
thermal‐responsive
nanostructural
resonances,
respectively
revealed.
Besides
good
energy‐saving
performance,
robust
shows
several
advantages:
1)
independent
privacy
functionalities,
2)
an
additional
hydro‐/solvato‐chromic
mode
control
in
extreme
circumstances,
3)
designable
patterns
colors
meet
aesthetic
demand.
work
may
inspire
future
multifunctional
smart
windows
spatio‐temporal
methods.
Chemistry of Materials,
Год журнала:
2024,
Номер
36(6), С. 2880 - 2887
Опубликована: Март 12, 2024
Constitutional
isomerism
of
covalent
organic
frameworks
(COFs)
has
recently
garnered
attention
for
its
potential
applications
in
advanced
photoelectrochemical
fields.
However,
there
have
been
no
reports
materials
which
half
the
linkages
between
building
blocks
COFs
are
isomerized
(so-called
semi-isomerism)
as
a
means
modulating
physicochemical
properties
COFs.
In
this
work,
semi-isomeric
pyrene-based
with
same
topology
were
synthesized
imine
linkages,
namely,
Py-Py
and
SI-Py
Both
featured
different
orientations
linkages.
Tiny
atomic-level
dislocations
led
to
electron
orbital
contributions
bandgaps
(2.39
vs
2.44
eV
COFs,
respectively),
resulting
distinct
transfer
properties.
comparison
exhibited
superior
electrochromic
performance
over
optical
modulation
range
(35%
24%),
response
time
(0.29/2.1
s
0.72/3.8
s),
coloration
efficiency
(180
144
C
cm–2).
Advanced Materials Technologies,
Год журнала:
2024,
Номер
9(5)
Опубликована: Янв. 11, 2024
Abstract
Electrochromic
devices
have
important
applications
in
building
energy
conservation,
next‐generation
displaying,
and
security
encryption,
while
durable
high‐performance
electrochromic
materials
are
highly
desirable.
Herein,
a
Zn‐based
smart
window
by
using
3D
ordered
macroporous
amorphous
WO
3
(a‐WO
)
arrays
as
cathode
is
reported.
Benefiting
from
structure
with
high
specific
surface
area
that
accelerates
the
ion
diffusion
migration,
oxygen
vacancy
modulated
a‐WO
providing
abundant
zinc
insertion
channels,
as‐fabricated
zinc‐based
inverse
opal
‐IO)
device
exhibits
excellent
properties,
including
large
light
modulation
(83%
optical
contrast
at
700
nm),
fast
response
time
(5.3
s
for
coloring
3.2
bleaching),
robust
cycling
stability.
Moreover,
solid‐state
‐IO
prototype
demonstrated
modulation,
electronic
display,
power
supply.
Furthermore,
experimental
results
theoretical
calculations
reveal
rich
vacancies
can
enhance
absorption
diffusion,
leading
to
enhancement
of
performance.
Defect
engineering
of
electrode
materials
is
considered
highly
effective
in
regulating
their
performance,
among
which
oxygen
vacancies
play
a
vital
role.
Thereupon,
comprehensively
understanding
effects
vacancy
electrochemical
processes
transition
metal
oxides
stays
hot
and
controversial,
representatively
for
amorphous
tungsten
oxide
films
electrochromic
(EC)
behaviors.
Upon
long‐term
cycling,
suffers
from
the
universal
trapping
effect
governed
by
intrinsic
host
microstructure
transport
kinetics
inserted
ions,
implying
that
manipulating
could
be
potential
solution
to
ion‐trapping
problem.
Hence,
systematic
work
urgent
not
only
tackling
but
also
on
EC
Herein,
concentration
modulated
over
wide
range.
In
combination
with
comprehensive
experiments
first‐principles
calculations,
presence
detrimental
properties,
it
greatly
attenuates
effect.
Excellent
cyclic
stability
achieved
100%
optical
modulation
rate
charge
capacity
retention
after
5000
voltammetry
cycles.
This
study
elucidates
oxides,
particularly
regarding
passivation.
Abstract
Electrochromic
smart
windows
(ESWs)
are
an
effective
energy‐saving
technology
for
near‐zero
energy
buildings.
They
consume
electric
unidirectionally
during
a
round‐trip
coloring‐bleaching
process,
with
the
involved
in
bleaching
process
being
wasted.
It
is
highly
desirable
to
reuse
this
wasted
directly
and/or
transfer
it
into
other
storage
equipment,
further
enhancing
overall
efficiency
of
usage.
Herein,
zinc
anode‐based
ESW
(ESW‐PZ)
reported
that
not
only
has
fascinating
visible–near‐infrared
(VIS‐NIR)
dual‐band
electrochromic
performance
(a
high
optical
contrast
63%)
but
also
showcases
good
characteristics
wide
voltage
window
2.6
V
and
density
127.5
µWh
cm
−2
).
The
buildings
utilizing
ESW‐PZ
modulate
indoor
environments
demonstrated
average
annual
saving
366
MJ
m
based
on
simulations,
which
about
16%
total
consumption.
Impressively,
utilization
90%
(855
mWh
)
realized
through
ingenious
circuit‐switching
strategy,
can
be
reused
power
small
household
appliances.
Electrochromic
effect
refers
to
the
electrically
tunable
coloration
of
a
matter.
Emerging
see-through
color-tunable
applications
pose
synergetic
demand
on
electrochromic
device,
concurrently
having
ultralow
field
driving,
operation
in
transmissive
mode,
and
high-purity
interference
colors
sci-fi
perception.
However,
such
an
device
remains
elusive.
Herein,
we
invent
electro-interference-color
based
two-dimensional
titania
liquid
crystals
(2D
TiO
2
LCs),
demonstrating
record-high
electroresponse
sensitivity
~1.5
×
10
−7
square
meters
per
volt
among
all
wide-bandgap
media.
Consequently,
works
under
electric
6
3
volts
meter
(three
orders
magnitude
lower
than
that
conventional
operates
mode
with
~85%
transparency,
displays
pure
colors.
The
serves
as
good
example
fabricate
diverse
chromatic
conceptually
demonstrated
smart
windows
functions
privacy
protection,
energy
saving,
artistic
presentation
well
transparent
display.
Nanophotonics,
Год журнала:
2024,
Номер
13(2), С. 155 - 172
Опубликована: Янв. 2, 2024
The
development
of
electrochromic
(EC)
materials
has
paved
the
way
for
a
wide
range
devices,
such
as
smart
windows,
color
displays,
optical
filters,
wearable
camouflages,
among
others.
However,
advancement
electrochromism
faces
significant
hurdle
due
to
its
poor
stability
and
limited
options.
This
lack
is
primarily
attributed
substantial
alteration
in
dielectric
properties
EC
during
cycling.
Consequently,
design
advanced
plasmonic
key
strategy
achieve
stable
device.
In
this
review,
we
provide
an
overview
current
state-of-the-art
designs
plasmonic-based
devices.
We
discuss
their
working
principles,
techniques
structure/morphology
engineering,
doping
methods,
crystal
phase
design.
Furthermore,
explore
integration
with
other
create
Finally,
outline
challenges
that
need
be
addressed
present
outlook
on
high-performance
