Energy & Environmental Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 17, 2024
Innovative
PETS
enhance
PV
efficiency
and
support
low-carbon
goals,
yet
gaps
remain
on
feasibility,
commercialization,
cooling
specifics.
This
review
shows
can
boost
upto
50%
with
cooling,
highlighting
future
4E
studies.
Nanomaterials,
Journal Year:
2025,
Volume and Issue:
15(6), P. 439 - 439
Published: March 13, 2025
The
intrinsic
metal–insulator
transition
(MIT)
of
VO2
films
near
room
temperature
presents
significant
potential
for
reconfigurable
metamaterials
in
the
terahertz
(THz)
frequency
range.
While
previous
designs
primarily
focused
on
changes
electrical
conductivity
across
MIT,
accompanying
dielectric
due
to
mesoscopic
carrier
confinement
effect
have
been
largely
unexplored.
In
this
study,
we
integrate
asymmetric
split-ring
resonators
35
nm
epitaxial
film
and
identify
a
“dielectric
window”
at
early
stages
MIT.
This
is
characterized
by
redshift
resonant
without
degradation
quality.
phenomenon
attributed
an
inhomogeneous
phase
film,
which
induces
purely
change
onset
while
occurs
later,
slightly
above
percolation
threshold.
Our
findings
provide
deeper
insights
into
THz
properties
pave
way
dielectric-based,
hybrid
metamaterials.
Applied Physics Reviews,
Journal Year:
2025,
Volume and Issue:
12(1)
Published: March 1, 2025
Developing
new
organic
crystals
for
efficient
broad
terahertz
(THz)
wave
generation
remains
challenging,
as
multiple
critical
material
properties
must
be
achieved
simultaneously
within
a
single
crystal.
In
this
work,
we
introduce
series
of
nonlinear
optical
salt
tailored
THz
generators.
The
newly
designed
fluorinated
cationic
chromophore,
6-fluoro-2-(4-hydroxystyryl)-1-methylquinolinium
(OH6FQ),
has
been
incorporated
with
various
or
non-fluorinated
anions
into
six
different
ionic
crystals.
Notably,
the
tetrafluorinated
crystals,
composed
OH6FQ
cations
and
trifluorinated
anions,
meet
essential
requirements
generation,
including
large
macroscopic
nonlinearity,
optimal
facet
orientation
in
as-grown
mm-size,
plate-like
morphology,
relatively
low
absorption
across
both
entire-molecular
phonon
anion-stretching
vibration
regions.
These
exhibit
over
20
times
higher
optical-to-THz
amplitude
conversion
efficiency
compared
to
inorganic
ZnTe,
bandwidth
extending
up
16
THz.
To
best
our
knowledge,
is
first
report
showing
promising
potential
diverse
photonic
applications.