Advanced Science,
Journal Year:
2021,
Volume and Issue:
8(6)
Published: Jan. 29, 2021
2D
organic-inorganic
hybrid
Ruddlesden-Popper
perovskites
(RPPs)
have
recently
attracted
increasing
attention
due
to
their
excellent
environmental
stability,
high
degree
of
electronic
tunability,
and
natural
multiquantum-well
structures.
Although
there
is
a
rapid
development
photoelectronic
applications
in
solar
cells,
photodetectors,
light
emitting
diodes
(LEDs),
lasers
based
on
RPPs,
the
state-of-the-art
performance
far
inferior
that
existing
devices
because
limited
understanding
fundamental
physics,
especially
special
photophysics
carrier
dynamics,
excitonic
fine
structures,
quasiparticles,
spin-related
effect.
Thus,
still
plenty
room
improve
performances
RPPs
by
enhancing
knowledge
photophysics.
This
review
highlights
fundamentally
different
from
conventional
3D
congeners.
It
also
provides
most
recent
progress,
debates,
challenges,
prospects,
in-depth
perovskites,
which
significant
for
not
only
boosting
LEDs,
but
future
lasers,
spintronics,
quantum
information,
integrated
photonic
chips.
Energy & Environmental Science,
Journal Year:
2022,
Volume and Issue:
15(5), P. 2096 - 2107
Published: Jan. 1, 2022
This
work
provides
an
efficient
way
to
facilitate
both
electron
and
hole
extraction
in
the
designated
interfaces
of
perovskite
solar
cells.
A
record
power
conversion
efficiency
23.6%
for
mixed
Sn–Pb
cell
devices
is
realized.
ACS Nano,
Journal Year:
2021,
Volume and Issue:
15(1), P. 954 - 965
Published: Jan. 15, 2021
Although
the
physicochemical
properties
of
niobium
carbide
(Nb2C)
have
been
widely
investigated,
their
exploration
in
field
photoelectronics
is
still
at
infancy
stage
with
many
potential
applications
that
remain
to
be
exploited.
Hence,
it
demonstrated
here
few-layer
Nb2C
MXene
can
serve
as
an
excellent
building
block
for
both
photoelectrochemical-type
photodetectors
(PDs)
and
mode-lockers.
We
show
photoresponse
performance
readily
adjusted
by
external
conditions
NSs
exhibit
a
great
narrow-band
PDs.
The
mechanism
was
further
confirmed
work
functions
predicted
density
functional
theory
calculations.
In
addition,
optical
switch
passively
mode-locked
fiber
lasers,
ultrastable
pulses
telecommunication
mid-infrared
regions
MXene,
high
69th
harmonic
order
411
MHz
center
wavelength
1882
nm
achieved.
These
intriguing
results
indicate
nanosheets
used
blocks
various
photoelectronic
devices,
broadening
application
prospects
two-dimensional
MXenes.
Advanced Materials,
Journal Year:
2021,
Volume and Issue:
33(10)
Published: Jan. 18, 2021
Abstract
Since
their
discovery
in
2011,
MXenes
(abbreviation
for
transition
metal
carbides,
nitrides,
and
carbonitrides)
have
emerged
as
a
rising
star
the
family
of
2D
materials
owing
to
unique
properties.
Although
primary
research
interest
is
still
focused
on
pristine
composites,
much
attention
has
recent
years
been
paid
also
with
diverse
compositions.
To
this
end,
work
offers
comprehensive
overview
progress
compositional
engineering
terms
doping
substituting
from
theoretical
predictions
experimental
investigations.
Synthesis
properties
are
briefly
introduced
then
reviewed
hetero‐MXenes.
Theoretical
calculations
regarding
doping/substituting
at
M,
X,
T
sites
role
vacancies
summarized.
After
discussing
synthesis
hetero‐MXenes
metal/nonmetal
(N,
S,
P)
elements
by
situ
ex
strategies,
focus
turns
emerging
applications
various
fields
such
energy
storage,
electrocatalysts,
sensors.
Finally,
challenges
prospects
addressed.
It
anticipated
that
review
will
be
beneficial
bridge
gap
between
experiments
well
guide
future
design
high
performance.
Nature Materials,
Journal Year:
2021,
Volume and Issue:
20(10), P. 1325 - 1336
Published: June 10, 2021
The
library
of
two-dimensional
(2D)
materials
has
been
enriched
over
recent
years
with
novel
crystal
architectures
endowed
diverse
exciting
functionalities.
Bulk
perovskites,
including
metal-halide
and
oxide
systems,
provide
access
to
a
myriad
properties
through
molecular
engineering.
Their
tunable
electronic
structure
offers
remarkable
features
from
long
carrier-diffusion
lengths
high
absorption
coefficients
in
perovskites
high-temperature
superconductivity,
magnetoresistance
ferroelectricity
perovskites.
Emboldened
by
the
2D
research,
down
monolayer
limit
have
recently
emerged.
Like
other
species,
reduced
dimensionality
are
expected
exhibit
new
physics
herald
next-generation
multifunctional
devices.
In
this
Review,
we
critically
assess
preliminary
studies
on
synthetic
routes
inherent
perovskite
materials.
We
also
discuss
how
exploit
them
for
widespread
applications
an
outlook
challenges
opportunities
that
lie
ahead
enticing
class
Advanced Energy Materials,
Journal Year:
2021,
Volume and Issue:
12(4)
Published: May 5, 2021
Abstract
In
recent
years,
halide
perovskite
materials
have
sparked
intensive
research,
including
their
burgeoning
development
in
the
field
of
photo(electro)chemical
catalysis.
Halide
are
based
on
abundant
and
low‐cost
elements
with
a
rich
structural
composition
variety
molecular
morphological
dimensionalities.
They
possess
versatile
advantages
over
other
photo(electro)catalytic
owing
to
facile
adjustment
electronic
properties
via
compositional
engineering.
Thus,
rapid
photo(electro)catalysts
past
4–5
years
has
opened
up
new
opportunities
for
diverse
applications,
ranging
from
photocatalytic
organic
reactions
(e.g.,
chemical
transformations,
photopolymerization,
degradation)
solar‐to‐chemical
fuel
conversion
water
splitting
CO
2
reduction).
This
review
aims
provide
an
up‐to‐date
discussion
applications
materials,
emphasizing
crystal
dimensionality,
synthetic
methodologies,
heterojunction
structures,
fundamental
structure‐activity
relationships.
Furthermore,
current
challenges
future
research
directions
rational
design
boost
overall
catalytic
performance
stability
identified
envisaged
respectively.
