ACS Energy Letters,
Journal Year:
2024,
Volume and Issue:
unknown, P. 205 - 211
Published: Dec. 16, 2024
Two-dimensional
(2D)
perovskites
have
better
long-term
stability,
ion
migration
inhibition
ability,
and
lower
dark
current
in
X-ray
detection
due
to
the
hindrance
effect
of
organic
cations.
However,
this
also
limits
charge
carrier
transport
lowers
device
sensitivity.
Here,
we
report
a
new
trans-copper
glycinate
lead
bromide
(Cu(Gly)2Pb2Br4)
perovskite-like
single
crystal.
Through
cross-linking
strategy
metal
ions,
ability
Cu(Gly)2Pb2Br4
along
out-of-plane
direction
was
greatly
improved.
The
record
high
hole
mobility
54.1
cm2
V–1
s–1
enables
sensitivity
26
589
μC
Gyair–1
cm–2.
structure
interlayer
inhibits
paths
enhances
stability
with
small
drift
as
low
4.93
×
10–18
A
cm–1
s–1.
crystal
shows
good
imaging
capability
potential
candidate
for
detection.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(5), P. 5769 - 5778
Published: Jan. 26, 2024
Lead-free
hybrid
double
perovskite
iodides
(HDPIs)
have
piqued
increasing
research
interest
due
to
their
environmental
friendliness
and
high
stability.
However,
such
antimony-based
HDPIs
with
strong
photocurrent
response
are
currently
very
limited.
Here,
we
successfully
design
construct
five
Ag(I)–Sb(III)-based
using
two
types
of
cyclic
aliphatic
amines
as
A-site
templates.
Interestingly,
these
Ag(I)–Sb(III)
exhibit
relatively
narrow
band
gaps,
preferred
orientation,
stability
after
being
processed
into
thin
films
on
the
indium
tin
oxide
(ITO)
substrate.
Notably,
under
illuminations
a
xenon
lamp,
all
considerable
responses,
reaching
maximum
difference
17
μA·cm–2
for
ASI
1,
which
is
highest
among
lead-free
halogen-based
organic–inorganic
compounds
date.
Combining
photocurrents
stability,
optoelectronic
applications
two-dimensional
can
be
expected.
Advanced Materials Technologies,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 4, 2024
Abstract
2D
hybrid
perovskites
have
emerged
as
a
promising
alternative
material
to
address
the
environmental
stability
and
ion‐migration
of
3D
for
direct
X‐ray
detector
applications.
Nevertheless,
detection
performance
still
lags
because
its
low
attenuation
ability
limited
solubility
thick
film
deposition.
Here,
high‐performance
in
Dion‐Jacobson
perovskite,
2(aminomethyl)
pyridinium
lead
bromide
(2AMPPbBr
4
),
is
studied.
2AMPPbBr
exhibits
an
ultra‐short
interlayer
distance
3.43
Å,
leading
high
ability.
Furthermore,
DFT
results
indicate
that
type
II
band
alignment
between
2AMP
2+
ligand
[PbI
6
]
4−
layers,
facilitating
effective
spatial
separation
photo‐generated
carriers.
The
made
with
average
thickness
200
µm
realized
via
improved
drop‐casting
method.
An
sensitivity
3933.88
µC
Gy
−1
cm
−2
limit
4.17
nGy
s
achieved.
This
work
paves
way
detectors
based
on
emerging
perovskite
materials.
Chemistry of Materials,
Journal Year:
2024,
Volume and Issue:
36(10), P. 5284 - 5292
Published: May 6, 2024
Dion-Jacobson
(DJ)
hybrid
perovskite
(HP)
single-crystal
photodetectors
often
require
operation
under
external
bias
due
to
the
centrosymmetric
structure
of
material,
which
is
not
conducive
intelligence
and
lightweight
devices.
To
solve
this
problem,
key
issue
how
regulate
noncovalent
interaction
between
interlayer
diammonium
cations
inorganic
frameworks
successfully
induce
polarity.
However,
there
a
lack
research
on
relationship
configuration
symmetry
DJ
HPs.
Herein,
we
constructed
series
polar
HPs
(1,3-BMACH)PbX4
(X
=
Cl,
Br,
I;
1,3-BMACH
1,3-bis(aminomethyl)cyclohexane)
by
changing
organic
cations.
It
was
found
that
hydrogen
bonding
strength
1,3-BMACH2+
bilateral
framework
different,
it
causes
layer
be
more
twisted,
resulting
in
deviation
positive
negative
charge
centers
I)
inducing
Subsequently,
achieved
efficient
self-powered
X-ray
detection
device
(1,3-BMACH)PbBr4
through
polarity-induced
bulk
photovoltaic
effect,
owns
outstanding
sensitivity
(157.3
μC
Gy–1
cm–2,
0
V
bias)
stability
radiation.
Studying
crystal
can
help
us
design
optoelectronic
ACS Applied Materials & Interfaces,
Journal Year:
2023,
Volume and Issue:
15(41), P. 48375 - 48381
Published: Oct. 6, 2023
The
FAxMA1-xPbI3
single
crystal
has
excellent
semiconductor
photoelectric
performance
and
good
stability;
however,
there
have
been
conflicting
opinions
regarding
its
macroscopic
piezoelectricity.
Here,
the
(x
=
0-0.1)
crystals
(FAx
SCs)
exhibit
a
high
piezoelectric
d33
coefficient
of
over
10
pC/N.
transforms
from
tetragonal
ferroelectric
phase
to
cubic
paraelectric
at
x
0.1-0.125.
Furthermore,
fully
polarized
MAPbI3
FA0.05
SCs
were
applied
prepare
self-powered
X-ray
detectors
with
vertical
structures.
sensitivity
detector
reaches
5.1
×
104
μC·Gy-1·cm-2
under
0
V
bias
voltage,
detection
limit
is
as
low
50
nGy/s.
This
work
provides
an
approach
designing
high-quality
semiconductors.
Journal of Materials Chemistry C,
Journal Year:
2024,
Volume and Issue:
12(19), P. 7062 - 7067
Published: Jan. 1, 2024
A
2D
halide
perovskite
(1)
was
syntheized.
1
shows
semiconductor
properties,
such
as
a
high
resistivity
(6.01
×
10
Ω
cm)
and
μτ
product
(6.21
−4
cm
2
V
−1
),
low
LOD
of
236
nGy
air
s
sensitivity
270
μC
Gy
−2
at
5
bias.
Advanced Photonics Research,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 10, 2024
The
pursuit
of
lead‐free
alternatives
to
lead
halide
perovskites
has
gained
significant
momentum
due
the
environmental
concerns
associated
with
toxicity.
adverse
effects
on
human
health
and
environment
have
prompted
a
shift
toward
developing
sustainable
eco‐friendly
perovskite
materials
for
various
optoelectronic
devices.
This
is
particularly
vital
in
emerging
technologies
where
play
crucial
role,
such
as
solar
cells,
X‐ray
detectors,
photodetectors,
light‐emitting
diodes
(LEDs),
etc.
Consequently,
it
paramount
understand
fundamental
properties,
synthesis
methods,
structural
characteristics
perovskites.
review
aims
provide
comprehensive
analysis
intricate
relationship
between
structures
properties
perovskites,
shedding
light
their
applications
across
diverse
fields.
focus
environmentally
benign,
high‐performing,
underscores
urgency
significance
research
efforts
driving
development
efficient
technologies.
Journal of Materials Chemistry C,
Journal Year:
2024,
Volume and Issue:
12(44), P. 18048 - 18057
Published: Jan. 1, 2024
Two-dimensional
Dion–Jacobson
(DJ)
phase
hybrid
perovskites
are
gradually
coming
to
the
stage
of
optoelectronic
devices
because
their
excellent
photoelectric
properties.
Journal of Materials Chemistry C,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 4, 2024
Strong
interlaminar
O–H⋯O
hydrogen
bonds
are
created
to
eliminate
the
van
der
Waals
gap
in
2D
double
perovskites,
which
facilitates
growth
of
large
crystals
toward
high
performance
X-ray
detection.
ACS Energy Letters,
Journal Year:
2024,
Volume and Issue:
unknown, P. 205 - 211
Published: Dec. 16, 2024
Two-dimensional
(2D)
perovskites
have
better
long-term
stability,
ion
migration
inhibition
ability,
and
lower
dark
current
in
X-ray
detection
due
to
the
hindrance
effect
of
organic
cations.
However,
this
also
limits
charge
carrier
transport
lowers
device
sensitivity.
Here,
we
report
a
new
trans-copper
glycinate
lead
bromide
(Cu(Gly)2Pb2Br4)
perovskite-like
single
crystal.
Through
cross-linking
strategy
metal
ions,
ability
Cu(Gly)2Pb2Br4
along
out-of-plane
direction
was
greatly
improved.
The
record
high
hole
mobility
54.1
cm2
V–1
s–1
enables
sensitivity
26
589
μC
Gyair–1
cm–2.
structure
interlayer
inhibits
paths
enhances
stability
with
small
drift
as
low
4.93
×
10–18
A
cm–1
s–1.
crystal
shows
good
imaging
capability
potential
candidate
for
detection.
