The
buried
interface
in
inverted
perovskite
solar
cells
(PSCs)
is
critical
for
determining
device
performance.
However,
during
annealing,
the
crystallized
downward
from
film's
top
surfaces,
and
use
of
dimethyl
sulfoxide
(DMSO)
often
resulted
voids
at
bottom
surface,
which
negatively
impacted
PSC
In
this
study,
a
green
solid-state
additive,
piracetam
(PA),
was
introduced
into
precursor
to
reduce
void
formation.
Due
stronger
interaction
with
components
than
DMSO,
nonvolatile
PA
could
remain
within
films
thermal
annealing
avoid
volume
collapse,
thereby
preventing
formation
as
well
passivating
defects
undercoordinated
Pb2+.
Additionally,
introduction
effectively
enhance
crystallization
perovskite,
leading
an
improved
quality
depressed
nonradiative
recombination.
As
result,
power
conversion
efficiency
(PCE)
PSCs
increased
significantly
20.95
23.42%
excellent
operational
stability.
Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 10, 2025
Abstract
Far‐red
phosphors
have
emerged
as
a
desirable
research
hotspot
owing
to
their
critical
role
in
promoting
plant
growth.
Especially,
Eu
3+
ions
typically
present
the
5
D
0
→
7
F
J
(J
=
0,
1,
2,
3,
4)
transitions,
which
overlap
with
far‐red
light
required
for
photosynthesis.
However,
achieving
high‐efficiency
emission
of
remains
challenging
due
weak
4
transition
and
concentration
quenching.
The
study
constructs
two
anomalously
efficient
garnet
A
3
Sc
2
C
O
12
(A
Y
,
Gd
.
Al
Ga
):Eu
high‐resolution
STEM
measurement
equipped
an
aberration
corrector
provides
direct
proofs
both
[EuO
8
]
configuration‐dependent
strong
origin
high
quenching
concentration.
Excitedly,
two‐component
substitution
(replacing
‐Al
‐Ga
)
triggers
near‐unity
internal
quantum
efficiency
(IQE
99.01%)
external
(EQE
38.73%)
:60%Eu
resulting
from
effective
modulation
/
transitions.
LEDs
device
based
on
exhibits
output
power
113
mW
at
300
mA.
Subsequently,
practical
applications
growth
underscore
significance
these
findings.
This
work
opens
new
path
development
highly
via
synergistic
effect
square
antiprism
configuration
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 10, 2025
Abstract
The
coffee‐ring
effect,
caused
by
uneven
deposition
of
colloidal
particles
in
perovskite
precursor
solutions,
leads
to
poor
uniformity
films
prepared
through
large‐area
printing.
In
this
work,
the
surface
SnO
2
is
roughened
construct
a
Wenzel
model,
successfully
achieving
super‐hydrophilic
interface.
This
modification
significantly
accelerates
spreading
solution,
reducing
response
delay
time
during
printing
process.
Additionally,
micro‐spherical
depression
structure
on
effectively
inhibits
migration
toward
edges
liquid
film,
trapping
at
buried
interfaces
and
improving
film
uniformity.
Due
synergistic
effect
super‐hydrophilicity
micro‐rough
,
leading
substantial
improvement
quality
crystals.
Therefore,
efficiency
flexible
devices
(0.101
cm
)
reached
25.42%
(certified
25.12%).
Moreover,
rigid
large‐scale
solar
modules
(PSMs)
based
meniscus‐coating
manufacture
21.34%
16.99%
(100
),
respectively,
demonstrated
superior
environmental
stability
maintaining
an
initial
91%
after
being
stored
atmospheric
conditions
for
2000
h,
offering
practical
guidance
fabricating
high‐performance
stable
cells
(PSCs).
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 16, 2025
Abstract
Defect
density
on
the
perovskite
film
surface
significantly
exceeds
that
found
in
bulk,
primarily
due
to
presence
of
dangling
bonds
and
excessive
strain.
Herein,
a
synergistic
engineering
is
reported
aimed
at
reducing
defects
films.
This
method
involves
subjecting
thermally‐annealed
films
controlled
cooling
condition
involving
an
ambient
environment
with
regulated
humidity,
as
opposed
nitrogen
environment,
followed
by
phenethylammonium
iodide
(PEAI)
passivation.
The
treated
moisture
(MC)
exhibit
enhanced
radiative
recombination,
prolonged
charge
carrier
lifetime,
improved
hole
transport
extraction
when
contact
layer
(HTL),
alongside
significant
reduction
Notably,
passivation
effect
PEAI
MC‐treated
amplified
compared
subjected
(NC)
treatment,
evidenced
more
uniform
potential
mapping
markedly
extended
lifetime.
may
arise
from
higher
ratio
newly‐formed
2D
phase
PEA
2
FAPb
I
7
PbI
4
film.
Consequently,
MC‐based
solar
cell
(PSC)
achieves
champion
power
conversion
efficiency
(PCE)
25.28%,
surpassing
NC‐treated
device,
which
exhibits
PCE
only
24.01%.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 4, 2025
Abstract
Cs
3
Cu
2
X
5
‐based
lead‐free
material
(X
=
Cl,
Br,
and
I)
nanocrystals
(NCs)
are
promising
eco‐friendly
materials
for
various
optoelectronic
applications.
Although
manganese
(Mn
2+
)
ion
doping
into
may
widen
the
emission
color
gamut,
incorporating
them
is
challenging
because
of
robust
tetrahedral
[CuX
4
]
triangular
structures.
This
paper
addresses
this
challenge
using
a
lattice
engineering
strategy,
which
induces
appropriate
shrinkage
by
replacing
I
−
with
Cl
in
NC
structure.
The
promotion
effect
substitution
on
Mn
confirmed
structural
chemical
analysis,
indicating
formation
highly
crystalline
NCs.
Mn‐doping
modifies
electronic
structures
reducing
band
gap
energy
forming
effective
transition
pathways.
range
NCs
expanded
from
blue
to
orange
finally
manifest
full‐color
gamut
white
light
emission.
continuous
broad
spectrum
attributed
combined
self‐trapped
excitons
yellow‐orange
d–d
transition.
A
light‐emitting
diode
Mn‐doped
as
conversion
layer
exhibit
stable
CIE
coordinates
(0.34,
0.32)
correlated
temperature
5010
K,
closely
matching
daylight
conditions
applied
an
intelligent
artificial
sunlight.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 3, 2025
Buried
interface
in
perovskite
solar
cells
(PSCs)
is
a
critical
determination
for
the
performance
and
stability
because
it
dominates
crystallization
of
layer,
non-radiative
recombination,
ion
migration
at
interfaces.
Herein,
novel
versatile
modifier,
potassium
sucrose
octasulfate
(K8SOS)
which
rich
sulfonic
groups
ions,
introduced
bridging
buried
SnO2
interface,
to
improve
interfacial
states
further
device
performance.
It
found
that
K8SOS
serves
as
bridge
can
not
only
passivate
defects
through
multi-site
strengthening
chemical
binding,
thus
effectively
inhibiting
non-radiation
recombination
suppressing
migration,
but
also
optimize
surface
state
absorber,
ultimately
achieving
gratifying
efficiency
25.32%
with
negligible
hysteresis.
What's
more,
optimized
delivers
admirable
sustaining
over
90%
initial
power
conversion
after
being
aged
under
continuous
85
°C
heating
stress
40
±
5%
RH
humidity
≈600
≈1200
h
1-sun
illumination,
respectively.
ACS Photonics,
Journal Year:
2024,
Volume and Issue:
11(11), P. 4916 - 4922
Published: Oct. 25, 2024
The
buried
interface
is
pivotal
for
enhancing
both
the
efficiency
and
stability
of
p-i-n
perovskite
solar
cells
(PSCs).
This
because
carrier
extraction
recombination
processes
can
be
significantly
affected
by
defects
that
tend
to
form
on
bottom
side.
Herein,
a
dual-reaction
site
molecule
homopiperazine-1,4-bis
(2-ethanesulfonic
acid)
(HEA)
employed
as
an
effective
multifunctional
passivator
self-assembled
monolayer
(SAM)/perovskite
inverted
PSCs.
HEA
has
two
sulfonic
acid
groups
with
double
action
sites,
which
effectively
fill
ITO
vacancies
unanchored
SAM
simultaneously
passivate
uncoordinated
Pb2+
molecular
bridge,
achieving
full
coverage
substrate
orderly
crystallization
perovskites.
resultant
device
presented
satisfactory
efficiencies
25.71%
(0.0982
cm2)
24.26%
(1
cm2).
Our
retained
91.8%
its
initial
power
conversion
(PCE)
after
1000
h
operation
under
1-sun
illumination
in
nitrogen
atmosphere.
research
offers
important
insights
into
further
refinement
enhancement
interfaces
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 12, 2025
Abstract
The
operational
stability
issues
of
perovskite
devices
under
illumination
pose
significant
challenges
for
practical
applications,
attributed
to
substantial
alterations
in
lattice
distortion,
defect
enrichment,
and
stress
distribution
the
excited
state.
However,
most
existing
modification
strategies
predominantly
focus
on
elimination
chemical
transformations
at
ground
state
level,
which
may
not
yield
desired
outcomes
To
address
this
challenge,
study
introduces
a
dynamic
management
strategy
utilizing
4‐aminoazobenzene
hydrochloride,
exhibits
photoinduced
cis‐trans
isomerism,
buried
interface
within
devices.
Experimental
results
demonstrate
that
isomerized
molecules
anchored
effectively
inhibit
formation
defects
mitigate
interfacial
accumulation.
A
comprehensive
mechanism
through
isomerism
transformation
has
been
proposed
elucidate
process.
Consequently,
device
efficiency
have
markedly
enhanced,
achieving
peak
25.65%
retaining
over
92%
its
initial
after
1200
h
continuous
International
Summit
Organic
Photovoltaic
Stability
protocol
(ISOS
).
The
intrinsic
characteristics
of
electron
transport
layers
(ETLs)
significantly
influence
the
efficiency
conventional
perovskite
solar
cell
(PSC).
This
work
introduces
an
in
situ
defect
passivation
approach
utilizing
magnesium
acetate
(MgAc)
to
mitigate
bulk
defects
within
SnO2
films.
incorporation
MgAc
during
growth
reduces
vacancy
defects,
including
oxygen
and
tin
vacancies,
leading
enhanced
electronic
properties,
such
as
improved
conductivity
mobility.
morphological
analysis
reveals
that
MgAc-modified
(MgAc-SnO2)
films
exhibit
a
smooth
surface
with
better
crystallinity,
which
promotes
uniform
deposition
high
crystallization
quality.
These
improvements
result
charge
reduced
nonradiative
recombination,
achieving
25.35%
for
device
MgAc-SnO2,
surpassing
23.93%
pristine
SnO2.
unencapsulated
devices
MgAc-SnO2
maintain
87.88%,
95.49%,
84.51%
initial
upon
heating
at
85
°C
1000
h,
storing
air
1200
continuously
irradiating
respectively.
excellent
stability
is
due
reduction
relaxed
residual
stresses
suppress
degradation.
study
highlights
modification
serves
effective
enhancing
PSCs,
thereby
advancing
their
commercial
viability.
