Advanced Energy Materials,
Год журнала:
2023,
Номер
13(39)
Опубликована: Сен. 3, 2023
Abstract
Targeted
passivation
of
defects
in
perovskite
is
the
primary
consideration
design
additives
containing
functional
groups.
However,
precise
modulation
electron
structure
groups
and
structure‐activity
relationship
between
electronic
configuration
performance
solar
cells
(PSCs)
still
need
to
be
explored.
In
this
study,
5‐chloro‐2‐hydroxypyridine
derivatives
with
–NH
2
(HNCLP)
–F
(HFCLP)
end
are
selected
realize
push‐pull
configuration.
Density
theory
demonstrates
that,
compared
HFCLP,
HNCLP
electron‐donating
terminal
has
a
long
dipole
moment
immobilize
interstitial
I
3
−
,
N
side
pyridine
high‐density
cloud
enables
strong
undercoordinated
Pb
2+
ions.
The
experimental
results
confirm
that
optimized
emerges
ability,
greatly
suppresses
nonradiative
recombination
absorber,
remarkably
improves
film
crystal
quality
along
extraction
transfer
process
photogenerated
carriers.
HNCLP‐contained
PSC
exhibits
remarkable
efficiency
24.47%,
helps
enhance
moisture‐proof
device
storage
stability.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(41)
Опубликована: Авг. 24, 2023
Passivating
the
interfaces
between
perovskite
and
charge
transport
layers
is
crucial
for
enhancing
power
conversion
efficiency
(PCE)
stability
in
solar
cells
(PSCs).
Here
we
report
a
dual-interface
engineering
approach
to
improving
performance
of
FA0.85
MA0.15
Pb(I0.95
Br0.05
)3
-based
PSCs
by
incorporating
Ti3
C2
Clx
Nano-MXene
o-TB-GDY
nanographdiyne
(NanoGDY)
into
electron
layer
(ETL)/perovskite
perovskite/
hole
(HTL)
interfaces,
respectively.
The
passivation
simultaneously
suppresses
non-radiative
recombination
promotes
carrier
extraction
forming
Pb-Cl
chemical
bond
strong
coordination
π-electron
conjugation
with
undercoordinated
Pb
defects.
resulting
film
has
an
ultralong
lifetime
exceeding
10
μs
enlarged
crystal
size
2.5
μm.
A
maximum
PCE
24.86
%
realized,
open-circuit
voltage
1.20
V.
Unencapsulated
retain
92
their
initial
after
1464
hours
ambient
air
80
1002
thermal
test
at
85
°C.
Energy & Environmental Science,
Год журнала:
2024,
Номер
17(14), С. 5115 - 5123
Опубликована: Янв. 1, 2024
We
developed
an
embedded
perovskite-bottom
interface
reinforcement
strategy
employing
cyano-based
emitters
with
near-unity
photoluminescence
efficiency,
to
enhance
the
device
performance
and
stability.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2024,
Номер
12(14), С. 5685 - 5694
Опубликована: Март 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.
Advanced Materials,
Год журнала:
2023,
Номер
35(40)
Опубликована: Июнь 30, 2023
Cesium-formamidinium
(Cs-FA)
perovskites
have
garnered
widespread
interest
owing
to
their
excellent
thermal-
and
photostability
in
achieving
stable
perovskite
solar
cells
(PSCs).
However,
Cs-FA
typically
suffers
from
Cs+
FA+
mismatches,
affecting
the
morphology
lattice
distortion,
resulting
an
enlarged
bandgap
(Eg
).
In
this
work,
"upgraded"
CsCl,
Eu3+
-doped
CsCl
quantum
dots,
are
developed
solve
key
issues
PSCs
also
exploit
advantage
of
on
stability.
The
introduction
promotes
formation
high-quality
films
by
adjusting
Pb-I
cluster.
CsCl:Eu3+
offsets
local
strain
contraction
induced
,
which
maintains
inherent
Eg
FAPbI3
decreases
trap
density.
Finally,
a
power
conversion
efficiency
(PCE)
24.13%
is
obtained
with
short-circuit
current
density
26.10
mA
cm-2
.
unencapsulated
devices
show
humidity
stability
storage
stability,
initial
PCE
92.2%
within
500
h
under
continuous
light
illumination,
bias
voltage
conditions
achieved.
This
study
provides
universal
strategy
address
maintain
MA-free
satisfy
future
commercial
criteria.
Advanced Energy Materials,
Год журнала:
2023,
Номер
13(39)
Опубликована: Сен. 3, 2023
Abstract
Targeted
passivation
of
defects
in
perovskite
is
the
primary
consideration
design
additives
containing
functional
groups.
However,
precise
modulation
electron
structure
groups
and
structure‐activity
relationship
between
electronic
configuration
performance
solar
cells
(PSCs)
still
need
to
be
explored.
In
this
study,
5‐chloro‐2‐hydroxypyridine
derivatives
with
–NH
2
(HNCLP)
–F
(HFCLP)
end
are
selected
realize
push‐pull
configuration.
Density
theory
demonstrates
that,
compared
HFCLP,
HNCLP
electron‐donating
terminal
has
a
long
dipole
moment
immobilize
interstitial
I
3
−
,
N
side
pyridine
high‐density
cloud
enables
strong
undercoordinated
Pb
2+
ions.
The
experimental
results
confirm
that
optimized
emerges
ability,
greatly
suppresses
nonradiative
recombination
absorber,
remarkably
improves
film
crystal
quality
along
extraction
transfer
process
photogenerated
carriers.
HNCLP‐contained
PSC
exhibits
remarkable
efficiency
24.47%,
helps
enhance
moisture‐proof
device
storage
stability.
