Angewandte Chemie,
Год журнала:
2024,
Номер
137(1)
Опубликована: Окт. 15, 2024
Abstract
Tin
halide
perovskites
are
the
most
promising
candidate
materials
for
lead‐free
perovskite
solar
cells
(PSCs)
thanks
to
their
low
toxicity
and
ideal
band
gap
energies.
The
introduction
of
2D/3D
mixed
phases
in
tin‐based
PSCs
(TPSCs)
has
proven
be
effective
approach
improving
device
efficiency
stability.
However,
a
2D
phase
normally
shows
relatively
carrier
mobility,
which
will
unfavorable
transfer
devices.
In
this
work,
we
used
thiophene‐based
cation
2‐(thiophen‐3‐yl)ethan‐1‐aminium
(3‐TEA)
as
spacer
form
novel
TPSCs,
effect
on
performance
enhancement
comparison
with
other
cations
like
2‐(thiophen‐2‐yl)ethan‐1‐aminium
(2‐TEA)
benzene‐based
2‐phenylethan‐1‐aminium
(PEA).
Theoretical
calculations
reveal
that
3‐TEA
enables
compact
crystal
packing
[SnI
6
]
4−
octahedral
layers,
resulting
lowest
hole
mass
formation
energy
phase.
This
significantly
enhances
stability
by
facilitating
more
efficient
within
These
findings
indicate
well‐suited
high‐performance
TPSCs.
Advanced Materials,
Год журнала:
2024,
Номер
36(19)
Опубликована: Фев. 7, 2024
Abstract
Conventional
3D
organic–inorganic
halide
perovskite
materials
have
shown
substantial
potential
in
the
field
of
optoelectronics,
enabling
power
conversation
efficiency
solar
cells
beyond
26%.
A
key
challenge
limiting
further
commercial
application
is
their
inherent
instability
over
outer
oxygen,
humidity,
light,
and
heat.
By
contrast,
2D
Ruddlesden–Popper
(2DRP)
perovskites
with
bulky
organic
cations
can
effectively
stabilize
inorganic
slabs,
yielding
excellent
environmental
stability.
However,
efficiencies
2DRP
are
much
lower
than
those
counterparts
due
to
poor
charge
carrier
transporting
property
insulating
cations.
Their
inner
structural,
dielectric,
optical,
excitonic
properties
remain
be
primarily
studied.
In
this
review,
main
reasons
for
low
first
analyzed.
Next,
a
detailed
description
various
strategies
improving
provided,
such
as
bandgap
regulation,
crystal
phase
orientation
distribution,
energy
level
matching,
interfacial
modification,
etc.
Finally,
summary
given,
possible
future
research
directions
methods
achieve
high‐efficiency
stable
rationalized.
Advanced Materials,
Год журнала:
2024,
Номер
36(31)
Опубликована: Май 23, 2024
Compared
to
3D
perovskites,
2D
perovskites
exhibit
excellent
stability,
structural
diversity,
and
tunable
bandgaps,
making
them
highly
promising
for
applications
in
solar
cells,
light-emitting
diodes,
photodetectors.
However,
the
trade-off
worse
charge
transport
is
a
critical
issue
that
needs
be
addressed.
This
comprehensive
review
first
discusses
structure
of
metal
halide
then
summarizes
significant
factors
influencing
detail
provides
brief
overview
testing
methods.
Subsequently,
various
strategies
improve
are
presented,
including
tuning
A'-site
organic
spacer
cations,
A-site
B-site
X-site
ions.
Finally,
an
outlook
on
future
development
improving
perovskites'
discussed.
Abstract
Perovskite
single
crystals
have
garnered
significant
attention
due
to
their
impressive
properties
in
optoelectronic
applications,
including
long
carrier
diffusion
lengths,
low
trap‐state
densities,
and
enhanced
stability.
Methylamino
lead
halide
perovskite
(MAPbX
3
,
where
X
is
a
halogen
such
as
Cl,
Br,
or
I)
notable
example
of
metal
with
desirable
ideal
cubic
perovskites
tolerance
factor
between
0.9
1.0.
MAPbX
has
adjustable
bandgap,
high
thermal
chemical
stability,
excellent
light
absorption
capacity.
Here
the
unique
characteristics
molecular
structure,
optical
properties,
transport
are
summarized.
Universal
growth
technologies
for
crystals,
inverse
temperature
crystallization,
anti‐solvent
evaporation
solvent
method,
single‐crystalline
thin
film,
epitaxial
method
space
limiting
briefly
introduced.
Additionally,
comprehensive
review
various
device
photodetectors,
X‐ray
detectors,
light‐emitting
diodes,
lasers,
solar
cells
mainly
discussed.
Finally,
current
challenges
future
prospects
large‐scale
preparation
put
forward.
With
continuous
progress
photoelectric
technology,
more
innovative
applications
expected
bring
convenience
progress.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 5, 2024
Abstract
The
interfacial
management
in
perovskite
solar
cells
(PSCs),
including
mitigating
the
carrier
transport
barrier
and
suppressing
non‐radiative
recombination,
still
remains
a
significant
challenge
for
efficiency
stability
enhancement.
Herein,
by
screening
family
of
fluorine
(F)
terminated
dual‐site
organic
dipole
molecules,
study
aims
to
gain
insight
into
molecular
array
toward
tunable
field.
Both
experimental
theoretical
results
reveal
that
these
functional
molecules
can
effectively
anchor
on
surface
through
Lewis
acid‐base
interaction.
In
addition,
tailored
side‐chain
with
F
atoms
allows
altering
constructing
well
matched
perovskite/Spiro‐OMeTAD
contact.
As
result,
inserting
modulates
interface
deliver
gradient
energy
level
alignment,
facilitating
extraction
transport.
optimal
trifluoro‐methanesulfonamide
mediated
N‐i‐P
PSCs
achieve
highest
25.47%,
together
enhanced
operational
under
1000
h
simulated
1‐sun
illumination
exposure.
These
findings
are
believed
provide
design
sufficient
tunability
perovskite‐based
optoelectronic
devices.
Advanced Materials,
Год журнала:
2024,
Номер
36(25)
Опубликована: Апрель 4, 2024
Ion
migration
is
one
of
the
most
critical
challenges
that
affects
stability
metal-halide
perovskite
solar
cells
(PSCs).
However,
current
arsenal
available
strategies
for
solving
this
issue
limited.
Here,
novel
active
layers
following
concept
ordered
structures
with
functional
units
(OSFU)
to
intrinsically
suppress
ion
migration,
in
which
a
three-dimensional
(3D)
layer
deposited
by
vapor
deposition
light
absorption
and
2D
solution
process
inhibition,
are
constructed.
As
promising
result,
activation
energy
increases
from
0.36
eV
conventional
0.54
OSFU
perovskite.
These
devices
exhibit
substantially
enhanced
operational
comparison
ones,
retaining
>85%
their
initial
efficiencies
after
1200
h
under
ISOS-L-1.
Moreover,
show
negligible
fatigue
behavior
robust
performance
light/dark
cycling
aging
test
(ISOS-LC-1
protocol),
demonstrates
application
motif
theory
field.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(34)
Опубликована: Июль 6, 2024
Abstract
2D
Dion–Jacobson
(DJ)
perovskites
show
structural
stability
and
tunability
are
regarded
as
promising
photovoltaic
materials.
The
spacer
cations
play
an
important
impact
on
exciton
separation
charge
transport
of
perovskites.
Herein,
a
novel
with
thiazole
core,
2‐thiazolemethanammonium
(AMT),
owning
characters
small
molecular
size,
delocalized
π‐electrons,
strong
electron‐withdrawing
ability,
is
introduced
to
construct
DJ
Owing
the
orbital
coupling
between
AMT
inorganic
layers,
AMT‐based
perovskite
exhibits
type
II
quantum
well
structure,
which
favorable
for
separation.
On
contrary,
such
interaction
does
not
appear
in
when
aliphatic
propyldiammonium
(PDA),
similar
length,
used
spacer.
can
also
induce
better
crystallinity,
resulting
reduced
defect
density
improved
ability.
optimized
device
based
(AMT)MA
3
Pb
4
I
13
power
conversion
efficiency
(PCE)
19.69%,
record
solar
cells
(PSCs)
(
n
≤
4).
This
work
provides
deep
understanding
aromatic
electronic
structure
corresponding
performance
new
opportunity
toward
highly
efficient
stable
PSCs.
Advanced Science,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 23, 2024
Abstract
Although
quasi‐2D
Ruddlesden‒Popper
(RP)
perovskite
exhibits
advantages
in
stability,
their
photovoltaic
performance
are
still
inferior
to
3D
counterparts.
Optimizing
the
buried
interface
of
RP
and
suppress
energetic
losses
can
be
a
promising
approach
for
enhancing
efficiency
stability
inverted
solar
cells
(PSCs).
Among
which,
constructing
polymer
hole‐transporting
materials
(HTMs)
with
defect
passivation
functions
is
great
significance
buried‐interface
engineering
PSCs.
Herein,
by
employing
side‐chain
tailoring
strategy
extend
π‐conjugation
regulate
functionality
groups,
target
HTMs
(PVCz‐ThSMeTPA
PVCz‐ThOMeTPA)
high
mobility
multisite
achieved.
The
presence
more
sulfur
atom‐containing
groups
endows
PVCz‐ThSMeTPA
increased
intra/intermolecular
interaction,
appropriate
energy
level,
enhanced
interfacial
interactions
perovskite.
hole
up
9.20
×
10
−4
cm
2
V
−1
S
.
Furthermore,
as
multifunctional
HTM
multiple
chemical
anchor
sites
PSCs
enable
effective
charge
extraction,
defects
passivation,
crystallization
modulation.
Eventually,
PVCz‐ThSMeTPA‐based
PSC
achieves
champion
power
conversion
22.37%,
which
represents
one
highest
efficiencies
reported
date
Nano-Micro Letters,
Год журнала:
2024,
Номер
17(1)
Опубликована: Окт. 10, 2024
Abstract
Layer-structured
Ruddlesden–Popper
(RP)
perovskites
(RPPs)
with
decent
stability
have
captured
the
imagination
of
photovoltaic
research
community
and
bring
hope
for
boosting
development
perovskite
solar
cell
(PSC)
technology.
However,
two-dimensional
(2D)
or
quasi-2D
RP
PSCs
are
encountered
some
challenges
large
exciton
binding
energy,
blocked
charge
transport
poor
film
quality,
which
restrict
their
performance.
Fortunately,
these
issues
can
be
readily
resolved
by
rationally
designing
spacer
cations
RPPs.
This
review
mainly
focuses
on
how
to
design
molecular
structures
organic
spacers
aims
endow
RPPs
outstanding
applications.
We
firstly
elucidated
important
roles
in
impacting
crystallization
kinetics,
transporting
ability
Then
we
brought
three
aspects
attention
spacers.
Finally,
presented
specific
structure
strategies
aiming
improve
performance
PSCs.
These
proposed
this
will
provide
new
avenues
develop
novel
advance
RPP
technology
future
Advanced Materials,
Год журнала:
2024,
Номер
36(48)
Опубликована: Окт. 12, 2024
Abstract
2D
Ruddlesden‐Popper
perovskites
(RPPs)
have
attracted
extensive
attention
in
recent
years
due
to
their
excellent
environmental
stability.
However,
the
power
conversion
efficiency
(PCE)
of
RPP
solar
cells
is
much
lower
than
that
3D
perovskite
(PSCs),
mainly
attributed
poor
carrier
transport
performance
and
excessive
heterogeneous
phases.
Herein,
binary
spacers
(
n
‐butylammonium,
BA
benzamidine,
PFA)
are
introduced
regulate
crystallization
kinetics
‐value
phase
distribution
form
uniform
permutation
films.
The
study
then
incorporates
=
5
2
MA
4
Pb
I
16
memory
single
crystal
achieve
ultrafast
stepped‐type
from
low
phases
high
high‐quality
(BA
0.75
PFA
0.25
)
These
single‐crystal‐assisted
strategies
produce
films,
leading
fast
extraction
significant
nonradiative
recombination
suppression.
resulting
PSC
presents
a
champion
PCE
21.15%
with
an
impressive
open
circuit
voltage
V
OC
1.26
V,
which
record
for
n‐
value
≤
5).
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
64(1)
Опубликована: Окт. 15, 2024
Tin
halide
perovskites
are
the
most
promising
candidate
materials
for
lead-free
perovskite
solar
cells
(PSCs)
thanks
to
their
low
toxicity
and
ideal
band
gap
energies.
The
introduction
of
2D/3D
mixed
phases
in
tin-based
PSCs
(TPSCs)
has
proven
be
effective
approach
improving
device
efficiency
stability.
However,
a
2D
phase
normally
shows
relatively
carrier
mobility,
which
will
unfavorable
transfer
devices.
In
this
work,
we
used
thiophene-based
cation
2-(thiophen-3-yl)ethan-1-aminium
(3-TEA)
as
spacer
form
novel
TPSCs,
effect
on
performance
enhancement
comparison
with
other
cations
like
2-(thiophen-2-yl)ethan-1-aminium
(2-TEA)
benzene-based
2-phenylethan-1-aminium
(PEA).
Theoretical
calculations
reveal
that
3-TEA
enables
compact
crystal
packing
[SnI
