Inclusion of polysaccharides in perovskite thin film: from in-solution interaction to film formation and stability
Nanoscale Advances,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
The
–OH
groups
in
cellulose
chains
allow
controlling
perovskite
crystallization,
thus
performance,
and
stability
when
is
used
as
an
additive
to
deposit
films
a
single-step,
shown
by
replacing
the
with
acetate
groups.
Language: Английский
Ambient Air Deposition Allows Reaching Record Light Use Efficiency in FAPbI3 Perovskite Solar Cells
Nadir Vanni,
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Mario Calora,
No information about this author
Lucia Mercurio
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et al.
Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 8, 2025
Abstract
Semi‐transparent
solar
cells
represent
an
exciting
opportunity
for
sustainable
energy
production,
thanks
to
the
possibility
of
being
integrated
into
buildings
and
urban
environments,
effectively
exploiting
already
existing
space.
Perovskite
(PCSs)
are
ideal
candidates,
offering
high
power
conversion
efficiencies
(PCEs)
combined
with
a
tuneable
band
gap
adjustable
thickness,
which
allow
convenient
modulation
average
visible
transmittance
(AVT).
However,
balancing
PCE
AVT
is
challenging
target.
This
study
uncovers
that
depositing
perovskite
layer
based
on
Formamidinium
Lead
Iodide
(FAPbI
3
)
thin
films
in
ambient
air,
rather
than
nitrogen‐controlled
atmosphere,
allows
increase
value
up
>
40%
while
also
enhancing
photovoltaic
performance
stability.
The
optoelectronic
quality
as‐obtained
substantially
enhanced,
showing
fewer
defects
superior
morphology.
As
result,
air‐deposited
devices
exhibit
higher
efficiency,
which,
combines
enhanced
AVT,
results
champion
device
light
use
efficiency
(LUE)
4.2%,
having
13.8%
30.4%.
record
LUE
deposited
air
conditions
pave
avenue
toward
real‐world
application
semi‐transparent
PSCs.
Language: Английский
Crystallization Dynamics of Hybrid Perovskite Mediated by a Biopolymer: From Precursor Solution to Thin Film
Advanced Materials Interfaces,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 24, 2025
Abstract
The
fascinating
optoelectronic
properties
of
Metal
Halide
Perovskites
(MHPs)
have
renewed
interest
in
the
development
innovative
photovoltaic
devices.
Controlling
MHP
crystallization
process
is
crucial
for
achieving
high‐performing
solar
cells
especially
when
scaling
up
deposition
technologies.
To
this
aim,
work
leverages
a
practical
toolkit
characterization
techniques
to
model
kinetics
MHPs
and
additives.
from
solution
mediated
by
starch
taken
as
reference,
with
glance
at
scalable
printing
techniques.
study
equilibrium
chemical
species
shows
that
influences
balance
ionic
species,
stabilizing
lead(II)iodide‐methylammonium
iodide‐dimethylsulfoxide(PbI
2
·MAI·DMSO)
adduct
causing
dissociation
MAI
aggregates.
A
combination
Differential
scanning
calorimetry
(DSC)
Thermogravimetric
analysis
(TGA)
analyses,
using
Kissinger
model,
reveals
heterogeneous
mechanism
delayed
starch,
leading
formation
characteristic
Liesegang
ring
grains.
Upscaling
via
blade
coating
further
demonstrates
mitigates
intrinsic
stress
during
open
air,
resulting
smoother,
more
homogeneous
perovskite
film
minimal
gaps.
This
approach
highlights
role
crystallization,
providing
insights
into
dynamics
influence
performance,
while
enabling
Language: Английский