Advanced Science,
Journal Year:
2022,
Volume and Issue:
9(32)
Published: Sept. 14, 2022
Advanced
exfoliation
techniques
are
crucial
for
exploring
the
intrinsic
properties
and
applications
of
2D
materials.
Though
recently
discovered
Au-enhanced
technique
provides
an
effective
strategy
preparation
large-scale
crystals,
high
cost
gold
hinders
this
method
from
being
widely
adopted
in
industrial
applications.
In
addition,
direct
Au
contact
could
significantly
quench
photoluminescence
(PL)
emission
semiconductors.
It
is
therefore
to
find
alternative
metals
that
can
replace
achieve
efficient
Here,
authors
present
a
one-step
Ag-assisted
efficiently
exfoliate
many
large-area
monolayers,
where
yield
ratio
comparable
method.
Differing
film,
however,
surface
roughness
as-prepared
Ag
films
on
SiO2
/Si
substrate
much
higher,
which
facilitates
generation
plasmons
resulting
nanostructures
formed
rough
surface.
More
interestingly,
strong
coupling
between
semiconductor
crystals
(e.g.,
MoS2
,
MoSe2
)
film
leads
unique
PL
enhancement
has
not
been
observed
other
mechanical
techniques,
be
mainly
attributed
enhanced
light-matter
interaction
as
result
extended
propagation
plasmonic
polariton
(SPP).
This
work
lower-cost
universal
method,
while
at
same
time
offering
SPP-matter
interactions.
Nano Letters,
Journal Year:
2022,
Volume and Issue:
22(11), P. 4468 - 4474
Published: May 20, 2022
Twisted
atomically
thin
semiconductors
are
characterized
by
moir\'{e}
excitons.
Their
optical
signatures
and
selection
rules
well
understood.
However,
their
hybridization
with
photons
in
the
strong
coupling
regime
for
heterostructures
integrated
an
cavity
has
not
been
focus
of
research
yet.
Here,
we
combine
excitonic
density
matrix
formalism
a
Hopfield
approach
to
provide
microscopic
insights
into
exciton
polaritons.
In
particular,
show
that
exciton-light
coupling,
polariton
energy,
even
number
branches
can
be
controlled
via
twist
angle.
We
find
these
new
hybrid
light-exciton
states
become
delocalized
relative
constituent
excitons
due
mixing
light
higher-energy
The
system
interpreted
as
natural
quantum
metamaterial
periodicity
engineered
Our
study
presents
significant
advance
understanding
control
polaritons
twisted
semiconductors.
Advanced Science,
Journal Year:
2022,
Volume and Issue:
9(32)
Published: Sept. 14, 2022
Advanced
exfoliation
techniques
are
crucial
for
exploring
the
intrinsic
properties
and
applications
of
2D
materials.
Though
recently
discovered
Au-enhanced
technique
provides
an
effective
strategy
preparation
large-scale
crystals,
high
cost
gold
hinders
this
method
from
being
widely
adopted
in
industrial
applications.
In
addition,
direct
Au
contact
could
significantly
quench
photoluminescence
(PL)
emission
semiconductors.
It
is
therefore
to
find
alternative
metals
that
can
replace
achieve
efficient
Here,
authors
present
a
one-step
Ag-assisted
efficiently
exfoliate
many
large-area
monolayers,
where
yield
ratio
comparable
method.
Differing
film,
however,
surface
roughness
as-prepared
Ag
films
on
SiO2
/Si
substrate
much
higher,
which
facilitates
generation
plasmons
resulting
nanostructures
formed
rough
surface.
More
interestingly,
strong
coupling
between
semiconductor
crystals
(e.g.,
MoS2
,
MoSe2
)
film
leads
unique
PL
enhancement
has
not
been
observed
other
mechanical
techniques,
be
mainly
attributed
enhanced
light-matter
interaction
as
result
extended
propagation
plasmonic
polariton
(SPP).
This
work
lower-cost
universal
method,
while
at
same
time
offering
SPP-matter
interactions.
