Small Methods,
Journal Year:
2023,
Volume and Issue:
7(10)
Published: July 11, 2023
Abstract
Perovskite
light‐emitting
diodes
(PeLEDs)
can
be
a
promising
technology
for
next‐generation
display
and
lighting
applications
due
to
their
excellent
optoelectronic
properties.
However,
systematical
overview
of
luminescence
degradation
mechanism
perovskite
materials
PeLEDs
is
lacking.
Therefore,
it
crucial
fully
understand
these
mechanisms
further
improve
device
performances.
In
this
work,
the
fundamental
photophysical
processes
materials,
electroluminescence
including
carrier
kinetics
efficiency
roll‐off
as
well
are
discussed
in
detail.
addition,
strategies
performances
summarized,
optimization
photoluminescence
quantum
yield,
charge
injection
recombination,
light
outcoupling
efficiency.
It
hoped
that
work
provide
guidance
future
development
ultimately
realize
industrial
applications.
Advanced Science,
Journal Year:
2023,
Volume and Issue:
11(4)
Published: Nov. 30, 2023
Surface
defects
of
metal
halide
perovskite
nanocrystals
(PNCs)
substantially
compromise
the
optoelectronic
performances
materials
and
devices
via
undesired
charge
recombination.
However,
those
defects,
mainly
vacancies,
are
structurally
entangled
with
each
other
in
PNC
lattice,
necessitating
a
delicately
designed
strategy
for
effective
passivation.
Here,
synergistic
ion
doping
surface
ligand
exchange
is
proposed
to
passivate
CsPbBr
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 6, 2024
Abstract
Halide
perovskite
light‐emitting
diodes
(PeLEDs)
hold
great
potential
for
applications
in
displays
and
lighting.
To
enhance
the
external
quantum
efficiency
(EQE)
of
PeLEDs,
it
is
crucial
to
boost
photoluminescence
yield
(PLQY)
films.
The
use
additives
has
emerged
as
a
powerful
chemical
strategy
control
crystallization
process
solution‐processed
different
types
that
can
be
used
reflect
various
interactions
with
materials,
influencing
their
possible
ways.
Understanding
relationship
between
these
impact
on
key
step
designing
emitters
improved
PLQY
devices
superior
EQE.
Following
logic
chain
additive–perovskite
interactions,
impacts
crystallization,
subsequent
enhancement
EQE,
this
review
discusses
how
play
pivotal
role
Furthermore,
assessment
addresses
open
challenges
outlines
future
prospects
development
PeLEDs.
Small Methods,
Journal Year:
2023,
Volume and Issue:
7(10)
Published: July 11, 2023
Abstract
Perovskite
light‐emitting
diodes
(PeLEDs)
can
be
a
promising
technology
for
next‐generation
display
and
lighting
applications
due
to
their
excellent
optoelectronic
properties.
However,
systematical
overview
of
luminescence
degradation
mechanism
perovskite
materials
PeLEDs
is
lacking.
Therefore,
it
crucial
fully
understand
these
mechanisms
further
improve
device
performances.
In
this
work,
the
fundamental
photophysical
processes
materials,
electroluminescence
including
carrier
kinetics
efficiency
roll‐off
as
well
are
discussed
in
detail.
addition,
strategies
performances
summarized,
optimization
photoluminescence
quantum
yield,
charge
injection
recombination,
light
outcoupling
efficiency.
It
hoped
that
work
provide
guidance
future
development
ultimately
realize
industrial
applications.
