Perovskite
films
feature
unique
optoelectronic
properties,
rendering
them
promising
for
electronic
devices.
The
properties
depend
on
the
morphology
a
broad
range
of
length
scales
from
nanometers
to
millimeters,
influenced
by
variety
factors.
However,
controlling
is
challenging.
A
tailored
supramolecular
additive,
N,
N'-bis(2-aminoethyl)
terephthalamide
developed
control
intermediate
and
perovskite
crystallization
methyl
ammonium
lead
iodide
(MAPbI3)
enhance
thermal
moisture
stability
in
final
film.
Reversible
coordinative
interactions
carbonyl
groups
with
Pb2+
ions
via
Lewis
acid-base
adduct
subsequent
ion-ion
peripheral
grain
boundaries
are
combined
which
stabilized
strong
hydrogen
bonding
pattern
formed
between
amide
moieties
additive
molecules.
Adding
low
amounts
this
precursor
solution
significantly
decelerates
structure
formation
systematically
reduces
crystallite
size.
Slower
growth
phases
incorporation
boundary
observed
multiple
time-resolved
techniques.
Evidence
single-molecule
interlayers
MAPbI3
crystals
presence
directed
interaction
molecules
shown.
Transferability
approach
other
perovskites
anticipated,
paving
way
improved
processing
stability.
Inorganic Chemistry Frontiers,
Год журнала:
2024,
Номер
11(11), С. 3316 - 3322
Опубликована: Янв. 1, 2024
A
radiochromic
semiconductor
detector
for
dual-mode
direct
X-ray
detection,
showing
rapid
color
changes
and
high
sensitivity
upon
exposure,
is
reported.
This
allows
quickly
capturing
object
information
through
visual
inspection
serves
as
an
alternative
means
of
detection.
ACS Energy Letters,
Год журнала:
2024,
Номер
9(6), С. 2758 - 2766
Опубликована: Май 15, 2024
Perovskite
single
crystals
(SC)
with
strong
X-ray
absorption
and
low
fabrication
costs
are
expected
to
be
the
next
generation
of
materials
for
detection.
However,
resistivity
serious
ion
migration
three-dimensional
(3D)
perovskites
lead
a
high
leakage
current
response
drift
as
well
carrier
mobility
radiation
luminescence
(RL)
two-dimensional
(2D)
perovskites,
resulting
in
output
detector.
In
this
study,
we
successfully
combined
3D
2D
by
epitaxial
welding
SCs.
addition,
RL
SC
sandwich
layer
formed
3D/2D/3D
was
recovered
SC,
an
enhanced
energy-conversion
efficiency
Therefore,
detectors
achieved
566%
improvement
sensitivity
ultralow
detection
limit
14.2
nGy
s–1.
Owing
excellent
stability
detector
still
maintained
its
original
after
30,000
s.
All
these
properties
enabled
provide
spatial
resolution
13.8
lp
mm–1
imaging.
This
study
provides
new
strategy
designing
stable
sensitive
detectors.
The
accurate
detection
of
x-rays
enables
broad
applications
in
various
fields,
including
medical
radiography,
safety
and
security
screening,
nondestructive
inspection.
Medical
imaging
procedures
require
the
x-ray
devices
operating
with
low
doses
high
efficiency
to
reduce
radiation
health
risks,
as
well
expect
flexible
or
wearable
ones
that
offer
more
comfortable
diagnosis
experiences.
Recently,
halide
perovskites
have
shown
promising
potential
high-performance,
cost-effective
owing
their
attractive
features,
such
strong
absorption,
high-mobility–lifetime
product,
tunable
bandgap,
fast
response,
low-cost
raw
materials,
facile
processing,
excellent
flexibility.
In
this
review,
we
comprehensively
summarize
recent
advances
perovskite
detectors
imaging,
focusing
on
application
technology.
We
highlight
demonstrations
optimizations
radiography.
Finally,
conclude
by
pointing
out
challenges
for
clinical
practical
sharing
our
perspectives
solutions
driving
field
forward.
Perovskite
films
feature
unique
optoelectronic
properties,
rendering
them
promising
for
electronic
devices.
The
properties
depend
on
the
morphology
a
broad
range
of
length
scales
from
nanometers
to
millimeters,
influenced
by
variety
factors.
However,
controlling
is
challenging.
A
tailored
supramolecular
additive,
N,
N'-bis(2-aminoethyl)
terephthalamide
developed
control
intermediate
and
perovskite
crystallization
methyl
ammonium
lead
iodide
(MAPbI3)
enhance
thermal
moisture
stability
in
final
film.
Reversible
coordinative
interactions
carbonyl
groups
with
Pb2+
ions
via
Lewis
acid-base
adduct
subsequent
ion-ion
peripheral
grain
boundaries
are
combined
which
stabilized
strong
hydrogen
bonding
pattern
formed
between
amide
moieties
additive
molecules.
Adding
low
amounts
this
precursor
solution
significantly
decelerates
structure
formation
systematically
reduces
crystallite
size.
Slower
growth
phases
incorporation
boundary
observed
multiple
time-resolved
techniques.
Evidence
single-molecule
interlayers
MAPbI3
crystals
presence
directed
interaction
molecules
shown.
Transferability
approach
other
perovskites
anticipated,
paving
way
improved
processing
stability.
