Advanced Materials,
Journal Year:
2022,
Volume and Issue:
34(17)
Published: Jan. 13, 2022
Colloidally
grown
nanosized
semiconductors
yield
extremely
high-quality
optoelectronic
materials.
Many
examples
have
pointed
to
near
perfect
photoluminescence
quantum
yields,
allowing
for
technology-leading
materials
such
as
high
purity
color
centers
in
display
technology.
Furthermore,
because
of
chemical
yield,
and
improved
understanding
the
surfaces,
these
materials,
particularly
colloidal
dots
(QDs)
can
also
be
ideal
candidates
other
applications.
Given
urgent
necessity
toward
carbon
neutrality,
electricity
from
solar
photovoltaics
will
play
a
large
role
power
generation
sector.
QDs
are
developed
shown
dramatic
improvements
over
past
15
years
photoactive
with
various
innovative
deposition
properties
which
lead
exceptionally
low-cost
high-performance
devices.
Once
key
issues
related
charge
transport
optically
thick
arrays
addressed,
QD-based
photovoltaic
technology
become
better
candidate
practical
application.
In
this
article,
authors
show
how
possibilities
different
techniques
bring
cells
industrial
level
discuss
challenges
perovskite
QD
particular,
achieve
large-area
fabrication
further
advancing
solve
pivotal
energy
environmental
issues.
Science,
Journal Year:
2022,
Volume and Issue:
377(6613), P. 1406 - 1412
Published: Sept. 8, 2022
Colloidal
lead
halide
perovskite
nanocrystals
are
of
interest
as
photoluminescent
quantum
dots
(QDs)
whose
properties
depend
on
the
size
and
shape.
They
normally
synthesized
subsecond
time
scales
through
hard-to-control
ionic
metathesis
reactions.
We
report
a
room-temperature
synthesis
monodisperse,
isolable,
spheroidal
APbBr3
QDs
("A"
indicates
cesium,
formamidinium,
methylammonium)
that
tunable
from
3
to
>13
nanometers.
The
kinetics
both
nucleation
growth
temporally
separated
substantially
slowed
down
by
intricate
equilibrium
between
precursor
(PbBr2)
A[PbBr3]
solute,
with
latter
serving
monomer.
all
these
compositions
exhibit
up
four
excitonic
transitions
in
their
linear
absorption
spectra,
we
demonstrate
size-dependent
confinement
energy
for
is
independent
A-site
cation.
Advanced Materials,
Journal Year:
2021,
Volume and Issue:
34(10)
Published: Nov. 14, 2021
Abstract
Colloidal
metal‐halide
perovskite
nanocrystals
(MHP
NCs)
are
gaining
significant
attention
for
a
wide
range
of
optoelectronics
applications
owing
to
their
exciting
properties,
such
as
defect
tolerance,
near‐unity
photoluminescence
quantum
yield,
and
tunable
emission
across
the
entire
visible
wavelength
range.
Although
optical
properties
MHP
NCs
easily
through
halide
composition,
they
suffer
from
light‐induced
phase
segregation
that
limits
use
in
devices.
However,
MHPs
can
be
synthesized
form
colloidal
nanoplatelets
(NPls)
with
monolayer
(ML)‐level
thickness
control,
exhibiting
strong
confinement
effects,
thus
enabling
by
controlling
bromide
or
iodide‐based
lead‐halide
NPls.
In
addition,
NPls
exhibit
narrow
peaks,
have
high
exciton
binding
energies,
higher
fraction
radiative
recombination
compared
bulk
counterparts,
making
them
ideal
candidates
light‐emitting
diodes
(LEDs).
This
review
discusses
state‐of‐the‐art
NPls:
synthetic
routes,
thickness‐controlled
synthesis
both
organic–inorganic
hybrid
all‐inorganic
NPls,
linear
nonlinear
(including
charge‐carrier
dynamics),
performance
LEDs.
Furthermore,
challenges
associated
synthesis,
environmental
thermal
stability,
application
efficient
LEDs
discussed.
ACS Energy Letters,
Journal Year:
2023,
Volume and Issue:
8(2), P. 1152 - 1191
Published: Jan. 26, 2023
Lead
halide
perovskite
nanocrystals
(LHP
NCs)
have
emerged
as
next-generation
semiconductor
materials
with
outstanding
optical
and
optoelectronic
properties.
Because
of
the
high
surface-to-volume
ratio,
performance
colloidal
stability
LHP
NCs
largely
depend
on
their
surface
chemistry,
especially
ligands
termination.
On
one
hand,
capping
improve
luminescence;
other
hand
highly
dynamic
binding
nature
is
detrimental
to
photoluminescence
NCs.
In
addition,
functionalization
desired
molecules
induces
new
functionalities
such
chirality,
light
harvesting,
triplet
sensitization
through
energy/electron
transfer
or
use
X-ray
detectors.
this
review,
we
present
current
understanding
an
atomic
view
chemistry
NCs,
including
crystal
termination,
vacancies,
different
types
ligands.
Furthermore,
discuss
ligand-induced
functionalities,
photocatalysis
chirality.
ACS Energy Letters,
Journal Year:
2022,
Volume and Issue:
7(6), P. 2043 - 2059
Published: May 23, 2022
Metal
halide
perovskite
nanocrystals
(MHP
NCs)
have
attracted
much
scientific
interest
in
photocatalysis.
Various
types
of
MHP
photocatalysts
been
intensively
explored
photocatalytic
CO2
reduction
the
past
few
years.
However,
some
key
issues,
such
as
severe
charge
recombination,
low
stability,
and
origin
products,
created
bottlenecks
developing
photocatalysts.
Therefore,
rational
design
MHPs
is
worthwhile
to
deepen
our
understanding
above
issues
develop
efficient
This
Focus
Review
highlights
recent
advances
regarding
principles
toward
reduction.
modification
strategies
are
clarified,
an
outlook
on
future
challenges
prospects
also
provided
point
out
possible
research
directions
It
anticipated
that
this
can
provide
guidance
MHP-based
help
uncover
common
encountered
by
community
when
studying
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
34(6)
Published: Oct. 27, 2023
Abstract
Halide
perovskites,
in
the
form
of
thin
films
and
colloidal
nanocrystals,
have
recently
taken
semiconductor
optoelectronics
research
by
storm,
emerged
as
promising
candidates
for
high‐performance
solar
cells,
light‐emitting
diodes
(LEDs),
lasers,
photodetectors,
radiation
detectors.
The
impressive
optical
optoelectronic
properties,
along
with
rapid
increase
efficiencies
cells
LEDs,
greatly
attracted
researchers
across
many
disciplines.
However,
most
advances
made
so
far
terms
preparation
(colloidal
nanocrystals
films),
devices
highest
are
based
on
Pb‐based
halide
which
raised
concerns
over
their
commercialization
due
to
toxicity
Pb.
This
has
triggered
search
lower‐toxicity
Pb‐free
perovskites
led
significant
progress
last
few
years.
In
this
roadmap
review,
different
expertise
joined
together
summarize
latest
progress,
outstanding
challenges,
future
directions
perovskite
regarding
synthesis,
spectroscopy,
devices,
guide
currently
working
area
well
those
that
will
join
field
future.
Nanoscale Horizons,
Journal Year:
2022,
Volume and Issue:
7(9), P. 941 - 1015
Published: Jan. 1, 2022
Oleic
acid
and
oleylamine
are
added
in
a
solution
containing
suitable
precursors
they
can
often
form
complexes
with
metal
ions.
These
may
be
thermally
decomposed
to
yield
ligand-coated
nanoparticles
tendency
assemblies.
The Journal of Physical Chemistry Letters,
Journal Year:
2022,
Volume and Issue:
13(10), P. 2281 - 2290
Published: March 4, 2022
Halide
perovskites
are
considered
to
be
next-generation
semiconductor
materials
with
bright
prospects
advance
the
technology
of
photonics
and
optoelectronics.
Because
intrinsic
ionic
feature,
interactions
between
water
induce
serious
stability
issues,
which
has
been
one
fundamental
problems
hindering
practical
application
perovskites.
The
degradation
halide
upon
exposure
intensively
studied,
resulting
in
chemical
insights
into
key
processes,
including
hydration,
phase
transformation,
decomposition,
dissolution.
In
this
Perspective,
we
try
illustrate
what
happens
when
meet
water.
We
summarize
research
progress
regarding
understanding
these
processes
discuss
principle
strategy
design
toward
improved
against
addition
instability-related
interactions,
also
aqueous
solution
perovskite
precursors
for
fabricating
perovskite-based
functional
materials.
Hopefully,
Perspective
can
inspire
more
studies
on
water,
such
as
spectroscopy
simulation,
crystal
structure
material
characterizations,
chemistry
crystallization.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(32)
Published: April 11, 2022
Cs2
NaInCl6
double
perovskite
is
stable,
environmentally
benign
and
easy
to
prepare.
But
it
has
a
wide
band
gap
(5.1
eV),
therefore,
does
not
show
optical
optoelectronic
properties
in
the
visible
short-wave
infrared
(SWIR)
region.
Here
we
introduce
such
functionalities
by
codoping
Sb3+
(s-electron
doping)
Er3+
(f-electron
ions.
doping
introduces
optically
allowed
5s2→
5s1
5p1
electronic
absorption
at
sub-band
level,
which
then
emits
blue
photoluminescence
with
≈93
%
quantum
yield.
f-f
of
parity
forbidden.
Codoping
-Er3+
,
leads
transfer
excitation
energy
from
yielding
SWIR
emission
1540
nm.
Temperature
(6
300
K)
dependent
measurements
elucidate
mechanism.
A
phosphor
converted
light
emitting
diode
(pc-LED)
fabricated
using
codoped
sample
stable
radiation
over
prolonged
(84
hours)
operation
5.1
V.