Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 12, 2024
Abstract
The
inevitable
ion
migration
in
organic–inorganic
hybrid
perovskites
can
trigger
their
own
chemical
reactions
and
photolysis,
posing
significant
challenges
to
the
operational
stability
of
perovskite
solar
cells.
This
is
particularly
evident
case
organic
cations
that
become
separated
from
lattice,
making
them
more
susceptible
deprotonation
leading
material
degradation.
Herein,
issue
aimed
address
by
constructing
multiple
hydrogen
bonds
L‐arginine
(L‐Arg)
2D/3D
perovskite.
Theoretical
calculations
reveal
introduction
L‐Arg
dramatically
increases
energy
barrier
for
FA
+
/MA
at
each
step,
effectively
immobilizing
.
Immersion
experiments
using
isopropyl
alcohol
(IPA)
further
confirm
plays
a
convincing
role
hindering
within
perovskite,
as
observed
both
macroscopic
microscopic
perspectives.
Additionally,
due
strong
interaction
between
acts
nucleation
center,
slowing
down
growth
rate
crystals
promoting
formation
high‐quality
films.
Finally,
L‐Arg‐based
devices
achieve
an
impressive
efficiency
24.62%
with
reduced
hysteresis,
well
exceptional
humidity
heat
aging
tests,
attributing
inhibited
low‐defect,
film.
Nano-Micro Letters,
Journal Year:
2025,
Volume and Issue:
17(1)
Published: Jan. 10, 2025
Abstract
Organic
additives
with
multiple
functional
groups
have
shown
great
promise
in
improving
the
performance
and
stability
of
perovskite
solar
cells.
The
can
passivate
undercoordinated
ions
to
reduce
nonradiative
recombination
losses.
However,
how
these
synergistically
affect
enhancement
beyond
passivation
is
still
unclear.
Specifically,
isomeric
molecules
different
substitution
patterns
or
molecular
shapes
remain
elusive
designing
new
organic
additives.
Here,
we
report
two
carbazolyl
bisphosphonate
additives,
2,7-CzBP
3,6-CzBP.
isomerism
effect
on
charge
transport
process
was
studied.
similar
effects
through
interactions,
e.g.,
P
=
O···Pb,
O···H–N
N–H···I.
further
bridge
crystallites
facilitates
transport.
Power
conversion
efficiencies
(PCEs)
25.88%
21.04%
were
achieved
for
0.09
cm
2
devices
14
modules
after
treatment,
respectively.
exhibited
enhanced
operational
maintaining
95%
initial
PCE
1000
h
continuous
maximum
power
point
tracking.
This
study
hints
at
importance
tuning
positions
which
paves
way
innovation
next-generation
multifunctional
aromatic
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 8, 2025
Abstract
SnO₂
is
a
widely
used
electron
transport
layer
(ETL)
material
in
perovskite
solar
cells
(PSCs),
and
its
design
optimization
are
essential
for
achieving
efficient
stable
PSCs.
In
this
study,
the
situ
formation
of
chain
entanglement
gel
polymer
electrolyte
reported
an
aqueous
phase,
integrated
with
as
ETL.
Based
on
self‐polymerization
3‐[[2‐(methacryloyloxy)ethyl]dimethylammonium]propane‐1‐sulfonic
acid
(DAES)
environment,
combining
catalytic
effect
LiCl
(as
Lewis
acid)
salting‐out
effect,
introduction
polyvinylpyrrolidone
(PVP)
other
chain,
gelled
SnO
2
(G‐SnO
)
structure
successfully
constructed
wide
range
functions.
The
PDEAS‐PVP
achieves
passivation
Pb
⁺
capture
through
chemical
chelation
mechanisms
explored.
results
demonstrated
that
all‐in‐air
prepared
PSC
based
G‐SnO
exhibited
excellent
power
conversion
efficiency
(PCE)
24.77%
retained
83.3%
their
initial
after
2100
h
air
exposure.
Additionally,
exposes
more
C═O
S═O
active
sites,
significantly
enhanced
lead
absorption
capability
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(32)
Published: March 14, 2024
Abstract
2D
Ruddlesden–Popper
perovskites
are
highly
regarded
materials
for
improving
the
stability
of
perovskite
solar
cells
(PSCs).
Wherein,
self‐additive
have
recently
been
proposed
to
provide
substantial
strategies
managing
crystallization
kinetics
and
bulk
defects.
For
a
profound
understanding
formation
mechanisms,
herein,
with
selecting
three
as
demonstrations,
comprehensive
analysis
behavior
combing
experimental
theoretical
calculations
is
conducted.
Self‐additive
exhibit
more
suitable
energies
strong
interaction,
which
conducive
realize
effect
form
stable
structure.
As
demonstrated,
glycine
(Gly)‐based
spacer
cations
played
pivotal
role
in
nucleation
growth
by
adjusting
aggregation
state
colloids
precursor,
resulting
excellent‐quality
films
large
average
grain
size
(≈3
µm).
Meanwhile,
electronic
distribution
binding
(
E
b
)
revealed
that
ethyl
ester
(Gly‐E)
possesses
robust
internal
interactions,
will
effectively
mitigate
defect
enhance
device
stability.
Endowing
above
outstanding
feature,
Gly‐E
devices
exhibited
an
optimized
PCE
21.60%,
one
highest
PCEs
among
all
RP
PSCs
(n
≤
6).
The
findings
basis
rational
design
achieving
highly‐performance
PSCs.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: May 7, 2024
Abstract
In
the
commercial
development
of
perovskite
solar
cells,
main
challenge
lies
in
achieving
efficient
devices
with
high
stability.
Additive
engineering
polycrystalline
perovskites
is
considered
as
an
effective
approach
to
address
this
by
passivating
surface
defects
and
reducing
carrier
losses
associated
these
defects.
work,
passivation
effect
molecules
different
side
chain
groups
on
role
binding
energy
mitigating
loss
are
studied.
The
findings
reveal
that
thiophene
group
particularly
enhancing
hole
transport.
Consequently,
treated
2‐thienylmethylamine
hydrochloride
(TMAC)
demonstrate
a
champion
power
conversion
efficiency
(PCE)
24.63%.
Furthermore,
TMAC‐treated
exhibit
remarkable
stability,
maintaining
over
93.13%
their
initial
efficiencies
after
1200
h
continuous
illumination
under
maximum
point
tracking
(MPPT).
This
research
presents
pathway
enhance
optoelectronic
performance
stability
cells.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 4, 2024
Abstract
Due
to
the
higher
photon
energy
under
indoor
photovoltaic
conditions,
using
perovskite
materials
with
wider
bandgaps
has
become
a
consensus.
However,
updating
absorbers
requires
additional
adaptations
involving
at
least
two
layers
of
transport
and
interfaces,
increasing
development
complexity.
This
study
acknowledges
that
buried
interface
is
primary
location
for
generation
photoinduced
carriers,
achieving
efficient
carrier
separation
this
will
solve
most
open
circuit
voltage
(
V
OC
)
loss
issues
encountered
in
transitioning
from
solar
photovoltaics
photovoltaics.
Therefore,
class
bipolar
pseudohalide
ammonium
salts
proposed
use
as
bridging
agents
effectively
resolve
lattice
misalignment
insufficient
driving
force
when
broadening
bandgap,
thereby
reducing
The
optimized
device
exhibits
an
excellent
photoelectric
conversion
efficiency
(PCE)
41.04%,
record‐high
1.08
V.
It
also
demonstrates
impressive
long‐term
operational
stability
T
80
lifetime
1000
h.
Substituting
various
non‐buried
different
categories
wide‐bandgap
does
not
alter
effectiveness,
proving
its
universality.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(44)
Published: July 16, 2024
Abstract
Perovskite
quantum
dots
(PQDs)
show
high
potential
for
new‐generation
light‐emitting
diodes
(LEDs)
due
to
their
outstanding
optoelectronic
properties.
Even
though
the
red
PQD‐LEDs
can
be
realized
through
mixing
halide
in
PQDs
tune
spectroscopies,
may
suffer
from
phase
separation
under
a
electric
field,
predominantly
affecting
LED
applications.
Herein,
ligand‐pinning‐assisted
approach
is
reported
spectroscopies
of
CsPbI
3
PQDs,
which
vinyl
phosphonic
acid
(VPA)
applied
as
function
ligands
regulate
nucleation
and
growth
during
synthesis.
Systematically
experimental
studies
theoretical
calculations
are
conducted
comprehensively
understand
functions
VPA
PQD
synthesis,
reveals
that
with
binding
energy
Pb
2+
cations
could
firmly
anchor
on
surface
matrix
without
desorption,
regulating
thus
resulting
tunable
being
realized.
Meanwhile,
also
renovate
defective
substantially
diminishing
trap‐induced
nonradiative
recombination.
Consequently,
deliver
external
efficiency
22.83%,
significantly
improved
compared
control
devices.
This
work
provides
new
avenue
toward
high‐performing
LEDs.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 16, 2025
Abstract
The
brittle
buried
interface,
characterized
by
weak
adhesion
to
the
substrate,
numerous
imperfections,
and
unfavorable
strain,
poses
a
significant
challenge
that
impairs
overall
performance
long‐term
stability
of
perovskite
solar
cells
(PSCs).
Herein,
robust
molecular
zipper
is
constructed
through
in
situ
polymerization
self‐assembly
monomer
4‐vinylbenzoic
acid
(VA),
tightly
link
interface
substrate
n‐i‐p
PSCs
with
an
adhesive
strength
as
high
10.77
MPa.
modified
exhibits
improved
morphology,
suppressed
defects,
released
matched
energy
level
alignment.
resulting
deliver
absolute
gain
≥1.67%
champion
power
conversion
efficiency
based
on
both
one‐step
deposition
protocol
two‐step
one,
demonstrating
universality
this
strategy
across
different
film‐processing
scenarios.
unencapsulated
can
retain
94.2%
their
initial
after
550
h
linear
extrapolated
T
90
value
1230
h,
per
ISOS‐L‐2
protocol.
This
work
provides
facile
reinforce
PSCs.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(17)
Published: Feb. 28, 2024
Abstract
Formamidinium
lead
triiodide
serves
as
the
optimal
light‐absorbing
layer
in
single‐junction
perovskite
solar
cells.
However,
achieving
operational
stability
of
high‐efficiency
n‐i‐p
type
devices
at
elevated
temperatures
remains
challenging.
In
this
work,
we
implemented
effective
surface
modifications
on
microcrystalline
films.
This
involved
nucleophilic
addition
formamidinium
cations
and
coordination
residual
PbI
2
with
triphenylmethane
triisocyanate
well
subsequent
polymerization.
The
situ
growth
a
cross‐linking
network
chemically
anchored
film
approach
effectively
reduced
trap
densities,
favorably
altered
work
function,
suppressing
interface
charge
recombination
thus
enhancing
cell
efficiency.
Coupled
high‐melting‐point
air‐doping
promoter,
fabricated
cells
surpassing
25
%
efficiency,
demonstrating
excellent
65
°C.
Perovskite
solar
cells
(PSCs)
have
made
significant
progress
in
efficiency,
but
their
long-term
operational
stability
remains
an
important
yet
challenging
issue.
Here,
a
dual-site
passivation
coupling
internal
encapsulation
strategy
is
developed
by
introducing
3,5-bis(trifluoromethyl)-benzenethiol
(35BBT)
at
the
perovskite
(PVK)/hole
transport
layer
(HTL)
interface.
35BBT
provides
dual
active
sites
containing
sulfur
(S)
atoms
and
fluorine
(F)
atoms,
where
S
sulfhydryl
group
F
trifluoromethyl
coordinate
with
unpaired
Pb2+
to
form
bonds,
meanwhile
hydrogen
bonds
organic
cations.
This
mitigates
deep
shallow
defects
PVK/HTL
Notably,
35BBT,
hydrophobic
benzene
rings
covering
layer,
enables
protect
films
from
water
oxygen
invasion.
Consequently,
Ag-based
device
treatment
achieves
efficiency
enhancement
22.03%
23.86%,
retaining
89.1%
of
its
initial
even
after
2000
h
air
exposure.
fabricated
also
exhibits
thermal
60
°C.
study
offers
avenue
for
simultaneously
passivating
interface
inhibiting
water/oxygen
erosion,
thereby
enabling
fabrication
efficient
stable
PSCs
future
commercial
applications.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(14), P. 5685 - 5694
Published: March 28, 2024
The
surface
microstructure
of
the
electron
transport
layer
(ETL)
is
crucial
for
performance
and
stability
n–i–p
perovskite
solar
cells
(PSCs)
as
it
affects
crystallization.
However,
improving
ETL
to
simultaneously
eliminate
interface
defects
enhance
crystalline
quality
a
key
challenge
date.
To
address
this
issue,
we
have
developed
2D
metal–organic
framework
(MOF),
Zn-TCPP,
using
multifunctional
template
modulate
ETL/perovskite
interface.
Zn-TCPP
features
periodic
pore
structure
that
promotes
ordered
nucleation
perovskite,
resulting
in
an
improvement
film
crystallinity.
Furthermore,
its
organic
linker
can
interact
with
Pb2+
I–,
reducing
density
defects.
Moreover,
immersed
within
pores
forms
radial
junctions,
leading
increased
charge
extraction
efficiency.
Consequently,
PSCs
based
on
nanosheets
exhibit
enhanced
power
conversion
efficiency
(23.54%)
they
demonstrate
significantly
improved
environmental
resistance,
retaining
88%
their
original
after
550
h
period.
This
study
underscores
tremendous
potential
low-dimensional
MOF
materials
optimizing
PSC
performance.