Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 12, 2024
Abstract
The
photovoltaic
performance
of
inverted
perovskite
solar
cells
(PSCs)
relies
on
effectively
managing
the
interface
between
hole
extraction
layer
and
light‐absorbing
layer.
In
this
study,
we
have
synthesised
(4‐(3,6‐bis(methylthio)‐9
H
‐carbazol‐9‐yl)butyl)phosphonic
acid
(MeS‐4PACz),
which
forms
a
self‐assembled
monolayer
(SAM)
fluorine‐doped
tin
oxide
(FTO)
electrode.
molecule‘s
methylthio
substituents
generate
favourable
interfacial
dipole
moment
interact
with
This
interaction
results
in
well‐aligned
energy
levels
among
FTO/SAM/perovskite
layers,
promoting
efficient
significantly
reducing
carrier
recombination
losses.
Additionally,
groups
passivate
iodide
vacancies
Pb
2+
ions
perovskite,
defect‐induced
trap
states
enhancing
crystalline
growth
Consequently,
PSCs
incorporating
MeS‐4PACz
achieve
power
conversion
efficiency
25.13
%,
along
outstanding
photostability.
Methylammonium
chloride
(MACl)
additive
is
almost
irreplaceable
in
high-performance
formamidinium
(FA)
perovskite
photovoltaics.
However,
the
byproduct
of
methyl
(MFA+)
from
reaction
MA0
and
FA
damages
compositional
purity
phase
stability
α-FAPbI3.
The
addition
iodine
(I2)
to
FAPbI3
precursor
has
been
reported
inhibit
formation
MFA+.
Here,
we
systematically
investigate
effect
MAI
on
films
devices
by
using
replace
MACl
I2.
results
demonstrate
that
produces
more
I3-
precursor,
which
inhibits
between
MA
thus
blocks
Meanwhile,
MFA+
reduced
due
delayed
evaporation
caused
its
strong
interaction
with
I3-,
facilitating
growth
α-FAPbI3
an
improved
bottom
morphology.
It
eliminates
unreacted
PbI2,
forming
a
homogenized
phase,
facilitates
ordered
along
(111)
facet,
enhancing
charge
transport
increasing
open-circuit
voltage
(VOC).
optimized
device
shows
2%
improvement
PCE,
VOC
1.050
1.103
V.
Additionally,
target
retains
97%
initial
performance
after
5495
min
operation
under
maximum
power
point
tracking,
compared
82.3%
2000
for
control
device.
This
work
provides
insights
into
inhibiting
byproducts
induced
MA-FA
side
following
introduction
MACl.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 28, 2025
Abstract
To
approach
the
Shockley‐Queisser
(S‐Q)
limit
in
perovskite
solar
cells
(PSCs),
enhancing
fill
factor
(FF),
a
crucial
parameter
associated
with
carrier
transport
and
nonradiative
recombination,
is
of
paramount
importance.
In
this
paper,
rare
earths
(RE),
neodymium
salt
used
as
dopant
4‐(3‐,6‐dimethoxy‐9h‐carbazol‐9‐butyl)
phosphonic
acid
(MeO‐4PACz)
to
obtain
MeO‐4PACz:Nd
3+
,
Nd
migration
induced
during
annealing.
It
worth
noting
that
uniform
diffusion
layer
significantly
increases
defect‐formation
energy
perovskite,
thus
reducing
density
defect
states,
greatly
improving
rate
inhibited
non‐radiative
recombination.
The
experimental
results
show
wide‐band
gap
(WBG)
PSCs
based
on
has
an
excellent
power
conversion
efficiency
(PCE)
22.82%
FF
86.35%.
proposed
method
provides
direct
for
RE
promote
perovskites.
Progress in Photovoltaics Research and Applications,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 25, 2025
ABSTRACT
The
employment
of
rationally
designed
functional
group‐bearing
molecules
as
additives
to
passivate
perovskite
defects
has
emerged
a
prevalent
trend.
Among
the
diverse
array
passivation
materials,
donor‐π‐acceptor
(D‐π‐A)
structured
have
attracted
widespread
attention
due
their
unique
ability
simultaneously
regulate
electron
donor
and
acceptor
units,
thereby
promoting
coordination
with
undercoordinated
ions
films.
In
this
work,
we
introduce
an
indoline‐based
D‐π‐A
molecule
(labeled
IHT)
efficient
passivator
for
solar
cells
(PSCs).
extraordinary
electron‐donating
capability
indoline
moiety
endows
electron‐withdrawing
cyanoacetic
acid
group
elevated
density,
which
is
in
favor
interaction
under‐coordinated
Pb
2+
lattice,
thus
reducing
density
defective
states
within
Experimental
outcomes
underscore
efficacy
IHT
additive
passivating
CsFA‐based
PSCs.
optimal
devices
demonstrate
remarkable
champion
photovoltaic
conversion
efficiency
21.25%,
notable
improvement
7.4%
compared
Cs‐FA‐PbI
3
devices.
stability
assessments
reveal
that
unencapsulated
IHT‐treated
retained
83%
initial
after
30
days
ambient
air,
whereas
untreated
exhibited
decline
54%
under
same
condition.
This
work
indicates
profound
significance
formation
dense
film
effect
well
enhancing
long‐term
Research Square (Research Square),
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 13, 2025
Abstract
Controllable
solution-based
synthesis
of
semiconducting
micro-structured
materials
with
tailored
morphologies
and
specific
properties
is
crucial
for
the
development
cost-effective
microelectronic
devices.
Here,
we
present
a
high-throughput
experimental
approach
that
integrates
in-situ
absorption
spectroscopy
molecular
dynamics
simulations
to
systematically
explore
ligand-mediated
crystallization
in
two-dimensional
(2D)
perovskite
single
crystals.
We
establish
clear
correlation
between
structures
organic
ligands
morphology
crystals,
showing
shorter
promote
1D
nanowire
formation,
while
longer
favor
2D
nanosheet
growth.
In-situ
reveal
larger
induce
conformational
changes
within
lattice,
shifting
from
direct
nucleation
lamellar
exfoliation.
Transmission
electron
microscopy
(TEM)
density
functional
theory
(DFT)
calculations
confirm
such
transition
driven
by
enhanced
solute–solvent
binding
energy,
which
modulates
pathway
lead
halide
intermediates.
Our
findings
provide
valuable
insights
into
solution-phase
kinetics
offer
rational
strategy
designing
optoelectronic
properties,
facilitating
their
scalable
integration
advanced
semiconductor
applications.
Advanced Materials Technologies,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 25, 2024
Abstract
Wide‐bandgap
(WBG)
perovskite
solar
cells
(PSC)
have
been
widely
applied
in
tandem
photovoltaics
(PV)
for
various
scenarios
including
indoor,
building,
and
underwater
PV.
However,
the
current
mainstream
WBG
PSCs
are
fabricated
by
spin‐coating,
which
is
inappropriate
scalable
production.
Blade‐coating
has
demonstrated
great
potential
to
realize
commercial
PV
panel
size
at
low
cost,
while
till
present,
only
a
few
efforts
devoted
blade‐coated
PSCs,
significantly
hampering
their
efficiency
evolvements.
Herein,
state‐of‐the‐art
research
progress
major
challenges
of
reviewed,
with
optimization
strategies
being
summarized
into
four
main
categories,
such
as
blading
parameter,
solvent
engineering,
additive/dopant,
defect
passivation.
Film
homogenization,
manipulation,
optimized
blade
coating
machines,
single‐halide
three‐dimensional
perovskites,
fabrication
on
textured
substrate
proposed
five
promising
directions
future
investigations
high‐performance
PSCs.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 12, 2024
The
photovoltaic
performance
of
inverted
perovskite
solar
cells
(PSCs)
relies
on
effectively
managing
the
interface
between
hole
extraction
layer
and
light-absorbing
layer.
In
this
study,
we
have
synthesised
(4-(3,6-bis(methylthio)-9H-carbazol-9-yl)butyl)phosphonic
acid
(MeS-4PACz),
which
forms
a
self-assembled
monolayer
(SAM)
fluorine-doped
tin
oxide
(FTO)
electrode.
molecule's
methylthio
substituents
generate
favourable
interfacial
dipole
moment
interact
with
This
interaction
results
in
well-aligned
energy
levels
among
FTO/SAM/perovskite
layers,
promoting
efficient
significantly
reducing
carrier
recombination
losses.
Additionally,
groups
passivate
iodide
vacancies
Pb
Small,
Journal Year:
2024,
Volume and Issue:
20(46)
Published: Aug. 13, 2024
Organic-inorganic
hybrid
perovskites
have
attracted
significant
attention
for
optoelectronic
applications
due
to
their
efficient
photoconversion
properties.
However,
grain
boundaries
and
irregular
crystal
orientations
in
polycrystalline
films
remain
issues.
This
study
presents
a
method
producing
crystalline-orientation-controlled
perovskite
single-crystal
using
retarded
solvent
evaporation.
It
is
shown
that
films,
grown
via
inverse
temperature
crystallization
within
confined
space,
exhibit
enhanced
property.
Using
interfacial
polymer
layer,
this
produces
high-quality
single-crystalline
with
varying
orientations.
Density
functional
theory
calculations
confirm
favorable
adsorption
energies
(110)
surfaces
methylammonium
iodide
PbI