ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(42), С. 57239 - 57245
Опубликована: Окт. 11, 2024
Tin
perovskites
present
promising
alternatives
to
lead
perovskites,
offering
comparable
optoelectronic
properties
alongside
environmentally
friendly
characteristics.
However,
the
rapid
crystallization
and
easy
oxidation
of
Sn2+
poor
film
quality,
further
constraining
device
performance.
Here,
4-hydroxypyridine
(4-HP)
is
introduced
into
tin
perovskite
precursor
for
fabrication
high-quality
films.
4-HP
could
modulate
colloidal
size
prenucleation
clusters
in
precursor,
thus
inducing
fast
nucleation
retarding
crystal
growth
rate
through
formation
chemical
interaction
between
nitrogen
pyridine
ions.
Furthermore,
hydroxyl
group
on
ring
contributes
suppressing
Sn2+.
As
a
result,
power
conversion
efficiency
(PCE)
devices
based
increases
up
11.3%.
The
stability
unencapsulated
shows
significant
improvement,
retaining
100%
their
initial
PCEs
after
2000
h
storage
N2
with
50–100
ppm
O2.
This
research
presents
novel
approach
synchronized
regulation
suppression
oxidation.
Nanoscale Advances,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
TiN/SiO
2
core–shell
refractory
plasmonic
nanoparticles
have
been
utilized
as
highly
efficient
nanoantennas
to
enhance
the
performance
of
lead-free
perovskite
solar
cells
(PSCs).
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(32), С. 42566 - 42576
Опубликована: Авг. 1, 2024
The
seed
method
stands
out
as
a
straightforward
and
efficient
approach
for
fabricating
high-performance
perovskite
solar
cells
(PSCs).
In
this
study,
we
propose
the
utilization
of
an
antisolvent
additive
to
induce
crystal
seeding,
thereby
facilitating
growth
wide-bandgap
grains.
Specifically,
introduce
three
commonly
used
antisolvents─ethyl
acetate
(EA),
isopropanol
(IPA),
chlorobenzene
(CB)─directly
into
precursor
solution
generate
seeds,
which
serve
promote
subsequent
nucleation.
This
antisolvent–crystal
seeding
(ACSM)
results
in
increased
grain
sizes,
reduced
film
defects,
overall
improved
quality.
Consequently,
power
conversion
efficiencies
(PCEs)
1.647
eV
PSCs
with
EA,
IPA,
CB
additives
are
recorded
at
19.86%,
20.61%,
20.45%,
respectively,
surpassing
that
reference
device
PCE
18.83%.
Furthermore,
stability
prepared
through
ACSM
is
notably
enhanced.
Notably,
optimized
IPA
retain
75%
original
after
being
stored
ambient
air
conditions
(25
°C,
RH
∼
15%)
30
days,
better
than
CB-added
(64%)
EA-added
devices
(53%),
while
only
31%
initial
PCE.
Moreover,
even
continuous
thermal
annealing
50
°C
200
h,
IPA-assisted
demonstrate
best
stability,
followed
by
those
exhibiting
poorest
stability.
Abstract
Surface
passivation
with
multifunctional
molecules
is
an
effective
strategy
to
mitigate
the
defect
and
improve
performance
stability
of
perovskite
solar
cells
(PSCs).
Here,
fabrication
a
wide
bandgap‐PSC
reported
tin
(WB‐Sn‐HP;
bandgap:
1.68
eV),
followed
by
molecular
surface
using
4‐Fluoro‐benzohydrazide
(F‐BHZ).
WB‐Sn‐PSC
has
demonstrated
promising
device
efficiency
11.14%
improved
stability.
The
key
enhancing
lies
in
meticulous
engineering
both
bulk
properties
WB‐Sn‐HP
film
F‐BHZ
treatment
as
consequence
stronger
electrostatic
potential
interaction
hydrazine
carbonyl
functionalities.
A
compact
highly
crystalline
growth
results
longer
carrier
lifetime
mitigation
control
Sn
2+
oxidation
supported
theoretical
calculations.
This
work
underlines
chemical
passivating
molecules.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(42), С. 57239 - 57245
Опубликована: Окт. 11, 2024
Tin
perovskites
present
promising
alternatives
to
lead
perovskites,
offering
comparable
optoelectronic
properties
alongside
environmentally
friendly
characteristics.
However,
the
rapid
crystallization
and
easy
oxidation
of
Sn2+
poor
film
quality,
further
constraining
device
performance.
Here,
4-hydroxypyridine
(4-HP)
is
introduced
into
tin
perovskite
precursor
for
fabrication
high-quality
films.
4-HP
could
modulate
colloidal
size
prenucleation
clusters
in
precursor,
thus
inducing
fast
nucleation
retarding
crystal
growth
rate
through
formation
chemical
interaction
between
nitrogen
pyridine
ions.
Furthermore,
hydroxyl
group
on
ring
contributes
suppressing
Sn2+.
As
a
result,
power
conversion
efficiency
(PCE)
devices
based
increases
up
11.3%.
The
stability
unencapsulated
shows
significant
improvement,
retaining
100%
their
initial
PCEs
after
2000
h
storage
N2
with
50–100
ppm
O2.
This
research
presents
novel
approach
synchronized
regulation
suppression
oxidation.
