Advanced Materials,
Год журнала:
2023,
Номер
35(51)
Опубликована: Сен. 18, 2023
Compared
to
solid
scintillators
and
organic
liquid
scintillators,
aqueous-based
(AbLS)
have
more
superiority
in
highly
flexible
scalability,
yet
are
now
limited
by
their
low
light
yield
(≈100
photons
MeV-1
).
Here,
inorganic
colloidal
halide
perovskites
with
high
photoluminescence
quantum
(PLQY)
of
three
primary
color
luminescence
up
88.1%
(red),
96%
(green),
81.8%
(blue)
respectively
synthesized,
a
new
generation
perovskite-mediated
AbLS
(PAbLS)
increased
comparison
the
commercial
scintillator
is
fabricated.
This
paper
exhibits
that
excellent
PLQY
dispersion
benefit
from
poly(ethylene
glycol)
modification
this
ensures
vacancy
inhibition
formation
defect-free
surfaces
an
aqueous
solution.
Moreover,
luminescent
emission
can
be
maintained
for
100
days
at
temperatures,
such
also
promises
heat-to-cold
customization
operating
temperature
even
ice
below
0
°C.
Finally,
depending
on
around
3058
8037
room
temperature,
PAbLS
shape/size
scalability
exhibit
robust
radiation
hardness
(dose
rate
as
23
mGy
s-1
)
conceptual
application
potential
high-energy
ray
detection
every
angle
360°.
Journal of the American Chemical Society,
Год журнала:
2023,
Номер
unknown
Опубликована: Ноя. 2, 2023
Mixed-cation
metal
halide
perovskites
have
shown
remarkable
progress
in
photovoltaic
applications
with
high
power
conversion
efficiencies.
However,
to
achieve
large-scale
deployment
of
this
technology,
efficiencies
must
be
complemented
by
long-term
durability.
The
latter
is
limited
external
factors,
such
as
exposure
humidity
and
air,
which
lead
the
rapid
degradation
perovskite
materials
devices.
In
work,
we
study
mechanisms
causing
Cs
formamidinium
(FA)-based
phase
transformations
stabilization
during
moisture
air
exposure.
We
use
situ
X-ray
scattering,
photoelectron
spectroscopy,
first-principles
calculations
these
chemical
interactions
their
effects
on
structure.
unravel
a
surface
reaction
pathway
involving
dissolution
FAI
water
iodide
oxidation
oxygen,
driving
Cs/FA
ratio
into
thermodynamically
unstable
regions,
leading
undesirable
transformations.
This
work
demonstrates
interplay
bulk
reactions,
providing
detailed
understanding
mechanism
strategies
for
designing
durable
efficient
materials.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Июнь 8, 2024
Abstract
Perovskite/silicon
tandem
solar
cells
hold
great
promise
for
realizing
high
power
conversion
efficiency
at
low
cost.
However,
achieving
scalable
fabrication
of
wide-bandgap
perovskite
(~1.68
eV)
in
air,
without
the
protective
environment
an
inert
atmosphere,
remains
challenging
due
to
moisture-induced
degradation
films.
Herein,
this
study
reveals
that
extent
moisture
interference
is
significantly
influenced
by
properties
solvent.
We
further
demonstrate
n-Butanol
(nBA),
with
its
polarity
and
moderate
volatilization
rate,
not
only
mitigates
detrimental
effects
air
during
but
also
enhances
uniformity
This
approach
enables
us
achieve
impressive
29.4%
(certified
28.7%)
double-sided
textured
perovskite/silicon
featuring
large-size
pyramids
(2–3
μm)
26.3%
over
aperture
area
16
cm
2
.
advance
provides
a
route
large-scale
production
cells,
marking
significant
stride
toward
their
commercial
viability.
Advanced Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 3, 2025
Abstract
Efficiency,
stability,
and
cost
are
crucial
considerations
in
the
development
of
photovoltaic
technology
for
commercialization.
Perovskite
solar
cells
(PSCs)
a
promising
third‐generation
due
to
their
high
efficiency
low‐cost
potential.
However,
stability
organohalide
perovskites
remains
significant
challenge.
Inorganic
perovskites,
based
on
CsPbX
₃
(X
=
Br
−
/I
),
have
garnered
attention
excellent
thermal
optoelectronic
properties
comparable
those
perovskites.
Nevertheless,
inorganic
faces
several
hurdles,
including
need
high‐temperature
annealing
achieve
photoactive
α‐phase
susceptibility
transitioning
into
nonphotoactive
δ‐phase
under
environmental
stressors,
particularly
moisture.
These
challenges
impede
creation
high‐efficiency,
high‐stability
devices
using
low‐cost,
scalable
manufacturing
processes.
This
review
provides
comprehensive
background
fundamental
structural,
physical,
lead‐halide
It
discusses
latest
advancements
fabricating
PSCs
at
lower
temperatures
ambient
conditions.
Furthermore,
it
highlights
progress
state‐of‐the‐art
devices,
manufactured
environments
reduced
temperatures,
alongside
simultaneous
upscaling
PSCs.
ACS Materials Letters,
Год журнала:
2022,
Номер
5(1), С. 60 - 78
Опубликована: Дек. 1, 2022
Metal
halide
perovskites
have
attracted
extensive
attention
in
the
field
of
photocatalysis,
because
their
excellent
photophysical
properties,
including
high
optical
absorption
coefficients,
tunable
band
structures,
and
long
carrier
diffusion
lengths.
The
application
prospect
conventional
lead-based
is
restricted
by
toxicity
instability
issues.
Therefore,
it
imperative
to
develop
environmentally
friendly
stable
lead-free
(LFHPs)
for
photocatalysis.
In
recent
years,
rapid
development
LFHPs
has
provided
new
opportunities
photocatalytic
applications,
ranging
from
solar-to-chemical
energy
conversion
organic
reactions.
this
Review,
we
summarize
progresses
with
an
emphasis
on
strategies
available
improve
performance
stability.
Furthermore,
present
outlook
future
directions
challenges
emerging
field.
The Journal of Physical Chemistry Letters,
Год журнала:
2023,
Номер
14(26), С. 6028 - 6036
Опубликована: Июнь 23, 2023
Metal
halide
perovskites
(MHPs)
have
attracted
attention
because
of
their
high
optoelectronic
performance
that
is
fundamentally
rooted
in
the
unusual
properties
MHP
defects.
By
developing
an
ab
initio-based
machine-learning
force
field,
we
sample
structural
dynamics
MHPs
on
a
nanosecond
time
scale
and
show
vacancies
create
midgap
trap
states
bulk
but
not
surface.
Deep
traps
result
from
Pb-Pb
dimers
can
form
across
vacancy
only
bulk.
The
required
shortening
distance
by
nearly
3
Å
facilitated
either
charge
trapping
or
50
ps
thermal
fluctuations.
large-scale
deformations
are
possible
soft.
Halide
surface
no
deep
separate
electrons
holes,
keeping
charges
mobile.
This
particularly
favorable
for
quantum
dots,
which
do
require
sophisticated
passivation
to
emit
light
blink
less
than
dots
formed
traditional
inorganic
semiconductors.
ACS Energy Letters,
Год журнала:
2024,
Номер
9(4), С. 1932 - 1975
Опубликована: Апрель 4, 2024
Carbon
dioxide
(CO2),
an
archetypal
greenhouse
gas,
can
be
transformed
into
valuable
fuels
through
photocatalysis,
presenting
auspicious
avenue
for
combating
global
climate
change
and
energy
crisis.
While
halide
perovskites
have
sparked
substantial
research
interest,
concerns
over
lead
toxicity
spurred
exploration
of
their
lead-free
counterparts
CO2
photoreduction.
This
comprehensive
Review
navigates
the
fundamentals
reduction,
delving
basic
principles,
mechanisms,
relevant
operando
techniques.
It
then
introduces
diverse
structures
(LFHPs),
synthesis
methodologies,
intrinsic
properties
that
render
them
suitable
Subsequently,
unfolds
application
modification
strategies
light-driven
conversion,
highlighting
breakthroughs
shedding
light
on
potential
mechanisms.
Finally,
current
challenges
to
tailor
LFHPs
robust
photocatalytic
reduction
are
critically
discussed,
offering
insights
future
in
this
realm.
aims
illuminate
path
toward
sustainable
bridging
knowledge
gaps
inspiring
innovations
a
greener
carbon-neutral
tomorrow.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(16)
Опубликована: Янв. 28, 2024
Abstract
CsPbI
3
perovskite
is
a
promising
light
absorber
in
solar
cells
(PSCs)
due
to
its
suitable
bandgap
(
E
g
)
and
high
chemical
stability,
but
the
phase
metastable
ambient
atmosphere
prone
defect
formation.
To
enhance
stability
reduce
defects,
forming
low
dimensional
(LD)
on
has
proved
effective.
However,
energy
levels
for
most
of
low‐conductivity
LD
perovskites
are
not
very
compatible
with
those
,
which
will
impair
charge
separation
device
performance.
Herein,
new
1D
(5‐Azaspiro[4.4]nonan‐5‐ium
lead
triiodide,
ASNPbI
large
reported
as
capping
layer.
The
p‐type
forms
p‐n
heterojunction
n‐CsPbI
staggered
band
alignment,
considerably
enhancing
carrier
separation.
Besides,
by
pre‐forming
at
an
intermediate
stage,
defects
suppressed
film.
Consequently,
PSCs
based
carbon
electrode
without
hole
transporter
(C‐PSCs)
achieves
PCE
18.34%,
among
highest‐reported
values
inorganic
C‐PSCs.
Furthermore,
hydrophobic
layer
thermal
that
greatly
enhances
stability.
Hence,
C‐PSCs
maintains
68%
initial
after
400
h
aging
85°C
N
2
glovebox.
Lead
halide
perovskite
nanocrystals
(LHP
NCs)
have
garnered
attention
as
promising
light-harvesting
materials
for
optoelectronics
and
photovoltaic
devices,
attributed
to
their
impressive
optoelectronic
properties.
However,
susceptibility
moisture-induced
degradation
has
hindered
practical
applications.
Despite
various
encapsulation
strategies,
challenges
persist
in
maintaining
stability
performance
simultaneously.
Here,
a
ligand
exchange
approach
is
proposed
using
(11-mercaptoundecyl)-N,N,N-trimethylammonium
bromide
(MUTAB)
enhance
the
dispersibility
of
CsPbBr
