Are nanophotonic intermediate mirrors really effective in enhancing the efficiency of perovskite tandem solar cells?
Nanophotonics,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 9, 2025
Abstract
An
intermediate
mirror
has
been
proposed
to
enhance
multijunction
solar
cell
efficiency
by
selectively
reflecting
the
light
beyond
higher
energy
bandgap
of
top
cell,
while
simultaneously
transmitting
rest
lower-energy
light.
Therefore,
it
reduces
higher-energy
absorption
spectral
tail
bottom
(thermalization
loss)
and
increase
in
cell.
However,
its
effectiveness
only
theoretically
validated
simplified
tandem
with
basic
components
such
as
an
antireflection
coating
(ARC)
top/bottom
absorbers.
In
contrast,
experimentally
optimized
cells,
perovskite
(PVK)/silicon
(Si)
two-terminal
configurations,
include
additional
stacked
electrodes,
ultrathinned
electrode,
random
textures
maximize
efficiency.
Herein,
we
revisited
role
these
advanced
cells.
Our
results
show
that
incorporation
ideal
(IIM)
does
not
improve
both
textured
flat
theoretical
upper
limit
being
similar
or
even
lower
than
Language: Английский
Technique for Creating 3D Ordered Colloidal Crystals with Hexagonal Close Packing and Uniform Thickness over a Large Area
The Journal of Physical Chemistry B,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 5, 2024
Traditional
approaches
to
creating
colloidal
crystals
do
not
simultaneously
achieve
uniform
thickness,
three-dimensional
ordering,
and
large
areas
of
defect-free
hexagonal
close-packed
domains.
Only
the
realization
all
these
conditions
will
allow
use
as
templates
for
fabricating
inverse
opals
with
a
tunable
photonic
band
gap.
Therefore,
we
propose
novel
approach
3D
crystals.
It
combines
Langmuir–Blodgett
(LB)
process
form
first
layer
sequential
spin-coating
processes
following
layers.
The
original
automated
LB
trough,
equipped
feedback
control
system
surface
pressure
control,
allowed
formation
monolayer
across
entire
area
76
mm
substrate,
obtaining
domain
3000
μm2.
As
result
developed
technique,
bilayer
three-layer
based
on
polystyrene
spheres
(1.25
1.8
μm)
were
obtained.
Three-dimensional
HCP
structure
covered
≈96.5%
was
obtained
at
least
1000
high
degree
ordering
confirmed
by
presence
stop
bands
in
transmission
spectra
wavelengths
corresponding
Bragg
diffraction
from
parallel
planes
2D
array
spherical
particles.
Language: Английский
An Alternating-Electric-Field-Driven Assembly of DNA Nanoparticles into FCC Crystals
Nano Letters,
Journal Year:
2024,
Volume and Issue:
24(44), P. 13965 - 13971
Published: Oct. 7, 2024
Using
an
alternating
electric
field
is
a
versatile
way
to
control
particle
assembly.
Programming
DNA-AuNP
assembly
via
remains
significant
challenge
despite
the
negative
charge
of
DNA.
In
assembly,
critical
percolation
state
delicately
constructed,
where
DNA
bond
loosely
connected
and
sensitive
fields.
this
state,
FCC
crystal
structure
can
be
successfully
constructed
by
applying
high-frequency
assemble
DNA-AuNPs
without
altering
temperature,
which
favorable
for
temperature-sensitive
systems.
addition,
regulation
fields
adjusted
through
parameters
such
as
frequency
voltage,
offers
more
precise
than
temperature
does.
The
voltage
used
precisely
tune
phase
from
dissolved
disordered
or
FCC.
These
findings
broaden
potential
DNA-based
engineering,
revealing
new
opportunities
in
electronic
nanocomposites
devices.
Language: Английский
On‐Demand Fabrication and Manipulation of Single Plasmonic Trimers for Ultrasensitive Enantiomer Detection
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
35(2)
Published: Oct. 25, 2024
Abstract
The
capability
of
plasmonic
nanostructures
in
generating
superchiral
near‐fields
holds
great
potential
for
a
wide
range
applications,
including
enantioselective
sensing,
medical
diagnosis,
and
chirality‐based
bioimaging.
To
implement
high‐performance
chiral
nanophotonic
devices,
achieving
situ
tuning
chiroptical
activity
is
highly
desirable
yet
remains
formidable
challenge.
Here,
straightforward
method
developed
deterministic
assembly
nanosphere
trimers
using
spectroscopy‐assisted
nano‐manipulation.
technique
offers
situ,
real‐time,
site‐specific
control
over
the
response
by
adjusting
their
vertex
angle
in‐plane
orientation.
combination
numerical
simulations
with
Born‐Kuhn
model
reveals
that
oblique
excitation
effectively
induces
symmetry
breaking
trimer
structure,
resulting
preferential
two
distinct
hybridized
modes
to
handedness
light.
Consequently,
this
yields
significant
g
factor
up
0.37.
Remarkably,
an
optimized
obtuse
exhibits
193‐fold
enhancement
optical
chirality
density,
enabling
detection
molecular
record‐large
spectral
dissymmetric
12
nm.
study
facilitates
rational
design
nanostructures,
offering
promising
prospects
sensing
at
single‐molecule
level
asymmetric
photocatalysis.
Language: Английский