Materials,
Journal Year:
2024,
Volume and Issue:
17(23), P. 5739 - 5739
Published: Nov. 23, 2024
Perovskite
solar
cells
are
among
the
most
promising
renewable
energy
devices,
and
enhancing
their
stability
is
crucial
for
commercialization.
This
research
presents
use
of
L-Ergothioneine
(L-EGT)
as
a
passivation
material
in
perovskite
cells,
strategically
placed
between
electron
transport
layer
absorber
to
mitigate
defect
states
at
heterojunction
interface.
Surface
analysis
reveals
that
introducing
L-EGT
significantly
improves
quality
film.
X-ray
diffraction
indicates
slows
down
film
degradation
successfully
suppresses
secondary
phase
formation.
photoelectron
spectroscopic
shows
oxygen
vacancies
lattice
decrease
from
29.21%
15.81%,
while
Ti
The Journal of Physical Chemistry Letters,
Journal Year:
2024,
Volume and Issue:
15(4), P. 1006 - 1018
Published: Jan. 22, 2024
Metal
halide
perovskites
exhibit
remarkable
properties
for
optoelectronic
applications,
yet
their
susceptibility
to
ion
migration
poses
challenges
device
stability.
Previous
research
has
predominantly
focused
on
the
of
ions.
However,
cations,
which
also
a
significant
influence
performance,
is
largely
overlooked.
In
this
Perspective,
we
review
cations
and
impacts
perovskite
materials
devices.
Special
attention
shall
be
devoted
recent
insights
into
L-site
organic
in
2D/3D
perovskites.
We
outline
inspirations
directions
further
cation
perovskites,
highlighting
new
possibilities
advancing
optoelectronics.
Micromachines,
Journal Year:
2024,
Volume and Issue:
15(10), P. 1249 - 1249
Published: Oct. 11, 2024
Photodetectors
are
critical
components
in
a
wide
range
of
applications,
from
imaging
and
sensing
to
communications
environmental
monitoring.
Recent
advancements
material
science
have
led
the
development
emerging
photodetecting
materials,
such
as
perovskites,
polymers,
novel
two-dimensional
quantum
dots,
which
offer
unique
optoelectronic
properties
high
tunability.
This
review
presents
comprehensive
overview
synthesis
methodologies
for
these
cutting-edge
highlighting
their
potential
enhance
photodetection
performance.
Additionally,
we
explore
design
fabrication
photodetectors
with
structures
physics,
emphasizing
devices
that
achieve
figure-of-merit
parameters,
enhanced
sensitivity,
fast
response
times,
broad
spectral
detection.
Finally,
discuss
demonstration
new
applications
enabled
by
advanced
photodetectors,
including
flexible
wearable
devices,
next-generation
systems,
technologies.
Through
this
review,
aim
provide
insights
into
current
trends
future
directions
field
photodetection,
guiding
further
research
rapidly
evolving
area.
Advanced Optical Materials,
Journal Year:
2024,
Volume and Issue:
12(11)
Published: Jan. 15, 2024
Abstract
The
demand
for
high‐performance
polarization‐sensitive
perovskite
photodetectors
(PSPPDs)
has
driven
research
to
develop
new
materials
that
enable
efficient
light
harvesting
and
polarization
detection.
Herein,
a
PSPPD
based
on
nanoimprinted
quasi‐2D
halide
thin
films
with
vertical
gradient
phase
distribution
is
reported.
nanoimprinting
method
utilized
create
nanoscale
linear
patterns
the
surface
of
film.
It
enables
polarized
detection
enhances
absorption.
According
results
transient
absorption
analysis,
along
longitudinal
direction
(PEA)
2
(MA)
n‐1
Pb
n
I
3n+1
(PEA
+
=
C
6
H
5
CH
NH
3
,
MA
3)
confirmed,
which
facilitates
carrier
transfer
separation,
leading
improved
device
performance.
These
PSPPDs
demonstrate
outstanding
photo‐response
large
responsivity
≈90
A
W
−1
high
detectivity
reaching
order
10
12
Jones.
photoluminescence
film
exhibits
an
anisotropy
ratio
2.05,
reaches
sensitivity
1.68.
findings
offer
insight
into
feasibility
developing
PSPPDs,
have
potential
applications
in
imaging,
sensing,
communication
technologies.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(15), P. 19849 - 19857
Published: April 4, 2024
Two-dimensional
(2D)
perovskites
have
been
widely
adopted
for
improving
the
performance
and
stability
of
three-dimensional
(3D)
metal
halide
perovskite
devices.
However,
rational
manipulation
phase
composition
2D
suitable
energy
level
alignment
in
2D/3D
photodetectors
(PDs)
has
rarely
explored.
Herein,
we
precisely
controlled
dimensionality
on
CsPbI2Br
films
by
tuning
polarity
n-butylammonium
iodide
(BAI)-based
solvents.
In
comparison
to
pure
n
=
1
(ACN-BAI)
formed
acetonitrile
treatment,
a
mixture
2
phases
(IPA-BAI)
generated
isopropanol
(IPA)
treatment
guaranteed
more
robust
defect
passivation
favorable
at
perovskite/hole
transport
layer
interface.
Consequently,
IPA-BAI
PD
exhibited
responsivity
0.41
A
W–1,
detectivity
1.01
×
1013
Jones,
linear
dynamic
range
120
dB.
Furthermore,
mixed-phase
effectively
shielded
3D
from
moisture.
The
device
retained
76%
its
initial
after
500
h
nonencapsulated
storage
10%
relative
humidity.
This
research
provides
valuable
insights
into
dimensional
modulation
further
enhancing
PDs.
Advanced Optical Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 6, 2025
Abstract
The
rapid
advancement
of
optoelectronic
devices,
particularly
photodetectors,
demands
enhanced
sensitivity
for
detecting
weak
light.
In
this
study,
MAPbI
3
‐MAPbBr
perovskite
single
crystal
heterojunctions
(SCHs)
are
fabricated
via
atomic
force
bonding
using
liquid‐phase
epitaxy,
with
polydimethylsiloxane
(PDMS)
serving
as
a
substrate
protector.
resulting
SCHs
photodetector
exhibits
self‐driven
operation,
an
ultra‐low
dark
current,
and
high
on‐off
ratio
5.8
×
10
4
at
0
V
bias.
Under
illumination
5
bias,
the
device
achieves
maximum
external
quantum
efficiency
414.9%.
With
remarkable
detection
rate
4.5
13
Jones,
demonstrates
outstanding
potential
light
imaging.
Furthermore,
enables
high‐quality
imaging
under
445
nm
source
remarkably
low
intensity
2.7
µW
cm
−2
,
without
need
any
power
supply.
