Advanced Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 12, 2024
Abstract
Narrow‐bandgap
(NBG)
Sn–Pb
mixed
perovskite
solar
cells
(PSCs)
represent
a
promising
solution
for
surpassing
the
radiative
efficiency
of
single‐junction
cells.
The
unique
bandgap
tunability
halide
perovskites
enables
optimal
tandem
configurations
wide‐bandgap
(WBG)
and
NBG
subcells.
However,
these
devices
are
limited
by
susceptibility
Sn
2+
in
bottom
cell
to
being
oxidized
4+
,
creating
detrimental
vacancies.
Herein,
novel
approach
that
replaces
particles
with
Ni
is
introduced
as
reducing
agent
precursor
solutions.
ferromagnetic
properties
enable
simple
magnetic
filtration,
eliminating
filtration
issues
associated
particles.
can
be
reused
up
five
times
without
significantly
affecting
PSC's
performance.
Additionally,
effectively
mitigates
oxidation
due
its
low
reduction
potential
(−0.23
V),
thereby
enhancing
device
Single‐junction
PSCs
prepared
using
achieve
power‐conversion
(PCE)
22.29%,
retaining
over
90%
their
initial
after
1250
h.
Furthermore,
Ni‐based
all‐perovskite
combining
1.77
eV
WBG
top
1.25
remarkable
PCE
28.13%.
Thus,
proposed
strategy
facilitate
commercialization
devices.
Tin–lead
(Sn–Pb)
mixed
perovskites
have
emerged
as
promising
light-absorbing
materials
for
single-junction
and
all-perovskite
tandem
solar
cells
due
to
their
favorable
narrow
bandgaps
high
theoretical
power
conversion
efficiencies.
However,
the
easy
oxidation
of
Sn2+
Sn4+
results
in
formation
rampant
defects
during
fast
crystallization
Sn–Pb
perovskite
thin
films
remarkable
photovoltaic
performance
decay
under
operation,
impeding
practical
applications.
Herein,
this
spotlight
presents
intrinsic
origins
instability
summarizes
recent
advances
antioxidation
strategies
regarding
raw
material
purification,
additive
engineering,
composition
interfacial
engineering.
Then,
remaining
challenges
future
directions
are
discussed
inspire
more
rational
design
toward
efficient
durable
cells.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 13, 2025
Abstract
Halide
perovskites
(HPs),
emerging
as
a
noteworthy
class
of
semiconductors,
hold
great
promise
for
an
array
optoelectronic
applications,
including
anti‐counterfeiting,
light‐emitting
diodes
(LEDs),
solar
cells
(SCs),
and
photodetectors,
primarily
due
to
their
large
absorption
cross
section,
high
fluorescence
efficiency,
tunable
emission
spectrum
within
the
visible
region,
tolerance
lattice
defects,
well
adaptability
solution‐based
fabrication
processes.
Unlike
luminescent
HPs
with
band‐edge
emission,
trivalent
rare‐earth
(RE)
ions
typically
emit
low‐energy
light
through
intra‐4f
optical
transitions,
characterized
by
narrow
spectra
long
lifetimes.
When
fused,
cooperative
interactions
between
REs
endow
resulting
binary
composites
not
only
properties
inherited
from
parent
materials
but
also
introduce
new
attributes
unattainable
either
component
alone.
This
review
begins
fundamental
characteristics
REs,
followed
particular
focus
on
impact
electronic
structures
associated
energy
transfer
The
advanced
synthesis
methods
utilized
prepare
HPs,
RE‐doped
compounds,
are
overviewed.
Furthermore,
potential
applications
summarized
across
diverse
domains,
high‐fidelity
anticounterfeiting,
bioimaging,
LEDs,
photovoltaics,
photodetection,
photocatalysis,
conclude
remaining
challenges
future
research
prospects.
Materials Horizons,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Quantum
dots
have
garnered
significant
interest
in
perovskite
solar
cells
(PSCs)
due
to
their
stable
chemical
properties,
high
carrier
mobility,
and
unique
features
such
as
multiple
exciton
generation
excellent
optoelectronic
characteristics
resulting
from
quantum
confinement
effects.
This
review
explores
dot
properties
applications
photoelectronic
devices,
including
synthesis
deposition
processes.
sets
the
stage
for
discussing
diverse
roles
transport,
absorber,
interfacial
layers
of
PSCs.
We
thoroughly
examine
advances
defect
passivation,
energy
band
alignment,
crystallinity,
device
stability,
broader
light
absorption.
In
particular,
novel
approaches
enhance
photoelectric
conversion
efficiency
(PCE)
dot-enhanced
are
highlighted.
Lastly,
based
on
a
comprehensive
overview,
we
provide
forward-looking
outlook
advanced
fabrication
its
impact
enhancing
photovoltaic
performance
cells.
offers
insights
into
fundamental
mechanisms
that
endorse
improved
PSC
performance,
paving
way
further
development
dot-integrated
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 5, 2025
Perovskite-based
tandem
solar
cells
(PTSCs)
are
promising
for
achieving
higher
efficiency
limits,
making
them
candidates
energy
supply.
However,
the
commercialization
in
complex
scenarios
necessitate
extreme
stability
and
reliability
of
devices,
particularly
ambient
conditions.
Herein,
use
a
high-efficiency
air-stable
quaternary
all-polymer
bulk
heterojunction
(BHJ)
is
pioneered
to
optimize
spectral
absorption,
facilitate
charge
transport,
suppress
exciton
recombination,
resulting
18.0%
power
conversion
(PCE)
organic
subcell.
The
resultant
monolithic
perovskite/organic
cell
(POTSC)
delivers
an
impressive
PCE
24.8%,
with
minimal
distribution
negligible
hysteresis.
Ambient
tests
on
devices
reveal
outstanding
stability,
which
attributed
reduced
increase
recombination.
Remarkably,
unencapsulated
device
maintained
88%
its
initial
after
exposure
air
500
h.
superior
owing
enhanced
resistance
hydrophobic
BHJ
water
oxygen,
thereby
protecting
perovskite
active
layer.
This
work
provides
novel
approach
from
perspective
POTSC
holds
promise
future
real-world
applications
field
cells.
ACS Applied Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 14, 2025
The
efficiency
of
mixed
lead–tin
perovskite
solar
cells
has
increased
rapidly,
thanks
to
efficient
passivation
strategies
bulk
and
interfacial
defects.
For
example,
this
occurs
at
the
hole-transport
layer
interface.
Here,
we
compare
self-assembled
monolayers
multilayers
(SAMs),
[2-(9H-carbazol-9-yl)ethyl]phosphonic
acid
(2PACz)
methylphosphonic
(MPA),
a
PEDOT:PSS
rear
interface
MA-free
narrow
band
gap
in
single-junction
(SJ)
all-perovskite
tandem
cells.
PEDOT:PSS-based
devices
show
best
power
conversion
14%
SJ
17.2%
architecture.
By
using
photoluminescence
ultraviolet
photoelectron
spectroscopy,
that
behavior
is
due
better
energy
alignment
PEDOT:PSS/PK
than
SAM/PK
However,
SAMs
also
lower
nonradiative
recombination
rates
results
identify
limits
effectiveness
2PACz
MPA
confirm
need
for
other
with
improved
energy-level
while
maintaining
their
passivating
properties.
Energy & Environmental Science,
Journal Year:
2024,
Volume and Issue:
17(19), P. 7247 - 7257
Published: Jan. 1, 2024
A
natural
reactive
oxygen
species
scavenger,
4-ethyl-2,6-dimethoxyphenol,
enabled
high
efficiency
narrow-bandgap
perovskite
solar
cells
and
all-perovskite
tandem
with
improved
stability.
ACS Applied Energy Materials,
Journal Year:
2024,
Volume and Issue:
7(22), P. 10212 - 10229
Published: Nov. 11, 2024
The
breakthrough
in
2012
showed
how
next-generation
solar
cells
lead
to
perovskite-based
materials
and
devices.
Perovskite
(PSCs)
have
achieved
power
conversion
efficiency
(PCE)
∼26.1%
on
rigid
∼25.09%
flexible
substrates.
long
lifetime
of
∼8760
h
is
reported
for
PSCs
using
Pb-based
perovskites
as
an
absorber.
However,
the
question
Pb
toxicity
still
a
major
issue
commercialization
path.
poor
stability
Pb-related
hinder
their
industrial
applications.
various
efforts
from
past
decade
resulted
development
tin
halide
perovskites,
defect-structured
double
perovskite-inspired
such
rudorffites.
PCE
these
newly
developed
falls
short
that
corresponding
Pb-halide-based
perovskites.
Hence,
herein,
review
present
status
Pb-free
perovskite
related
cell
devices
will
be
discussed.
Further,
summarize
recent
developments
free
useful
cells.
Sn-,
Ge-,
Sb-,
Bi-based
combinations
would
explored
futuristic
use
In
summary,
latest
progress,
outstanding
challenges,
future
directions
thin
films,
nanocrystals
also
reviewed.
focus
optical
optoelectronic
properties
give
researchers
today
tomorrow
who
are
working
field
may
join
shortly.
Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 9, 2025
Abstract
Metal
halide
perovskites
have
garnered
widespread
attention
for
research
and
applications,
thanks
to
their
high
adaptability
in
elemental
composition
optoelectronic
properties.
The
mixed
Sn–Pb
perovskite
FASn
0.5
Pb
I
3
(FA
+
is
formamidinium)
features
a
narrow
bandgap
of
1.25
eV,
appropriate
building
tandem
solar
cells,
but
faces
challenges
fabricating
uniform,
compact
films
having
protected
surfaces
scalable
dimensions.
Herein,
Lewis‐base
molecule
trimethylthiourea
(3T)
applied
as
ligand
the
system,
find
that
it
favors
binding
Sn
2+
over
.
As
result,
tin
lead
components
crystallize
congruently
at
unit
cell
scale.
3T
helps
crystal
grains
develop
into
regular
shapes
micron
sizes,
so
fill
film
thickness
closely
contact
substrate.
Also,
slow
evaporation
during
annealing
inhibits
surface
defects
renders
centimeter‐wide
smoothness.
Solar
cells
made
such
has
achieved
power
conversion
efficiency
21.5%
factor
81%.
Eliminating
methylammonium
hole
transport
layer
(HTL)
from
these
substantially
boosts
short‐term
storage
stabilities.
These
results
will
contribute
making
streamlined,
durable,
large‐area
cells.
