Nano-Micro Letters,
Год журнала:
2023,
Номер
15(1)
Опубликована: Июнь 19, 2023
Abstract
For
the
further
improvement
of
power
conversion
efficiency
(PCE)
and
stability
perovskite
solar
cells
(PSCs),
buried
interface
between
electron
transport
layer
is
crucial.
However,
it
challenging
to
effectively
optimize
this
as
beneath
film.
Herein,
we
have
designed
synthesized
a
series
multifunctional
organic–inorganic
(OI)
complexes
interfacial
material
promote
extraction,
well
crystal
growth
perovskite.
The
OI
complex
with
BF
4
−
group
not
only
eliminates
oxygen
vacancies
on
SnO
2
surface
but
also
balances
energy
level
alignment
perovskite,
providing
favorable
environment
for
charge
carrier
extraction.
Moreover,
amine
(−
NH
)
functional
can
regulate
crystallization
film
via
interaction
PbI
,
resulting
in
highly
crystallized
large
grains
low
defect
density.
Consequently,
rational
molecular
design,
PSCs
optimal
which
contains
both
−NH
groups
yield
champion
device
23.69%.
More
importantly,
unencapsulated
performs
excellent
ambient
stability,
maintaining
over
90%
its
initial
after
2000
h
storage,
light
91.5%
remaining
PCE
maximum
point
tracking
measurement
(under
continuous
100
mW
cm
−2
illumination
N
atmosphere)
500
h.
Advanced Functional Materials,
Год журнала:
2022,
Номер
32(36)
Опубликована: Июнь 30, 2022
Abstract
Interface
engineering
is
one
feasible
and
effective
approach
to
minimize
the
interfacial
nonradiative
recombination
stemming
from
defects,
residual
stress,
energy
level
mismatch.
Herein,
a
novel
steric‐hindrance‐dependent
buried
interface
defect
passivation
stress
release
strategy
reported,
which
implemented
by
adopting
series
of
adamantane
derivative
molecules
functionalized
with
CO
(i.e.,
2‐adamantanone
(AD),
1‐adamantane
carboxylic
acid
(ADCA),
1‐adamantaneacetic
(ADAA))
modify
SnO
2
/perovskite
interface.
All
modifiers
play
role
in
passivating
mitigating
strain,
enhancing
device
performance.
The
steric
hindrance
chemical
interaction
between
these
perovskites
as
well
determined
distance
bulky
ring,
gradually
decreases
AD,
ADCA,
ADAA.
experimental
theoretical
evidences
together
confirmed
effect
strength.
strength,
effect,
thus
performance
are
negatively
correlated
hindrance.
Consequently,
ADAA‐modified
achieves
seductive
efficiency
up
23.18%.
unencapsulated
devices
ADAA
maintain
81%
its
initial
after
aging
at
60
°C
for
1000
h.
Nano-Micro Letters,
Год журнала:
2022,
Номер
15(1)
Опубликована: Дек. 29, 2022
The
interfacial
defects
and
energy
barrier
are
main
reasons
for
nonradiative
recombination.
In
addition,
poor
perovskite
crystallization
incomplete
conversion
of
PbI2
to
restrict
further
enhancement
the
photovoltaic
performance
devices
using
sequential
deposition.
Herein,
a
buried
interface
stabilization
strategy
that
relies
on
synergy
fluorine
(F)
sulfonyl
(S=O)
functional
groups
is
proposed.
A
series
potassium
salts
containing
halide
non-halogen
anions
employed
modify
SnO2/perovskite
interface.
Multiple
chemical
bonds
including
hydrogen
bond,
coordination
bond
ionic
realized,
which
strengthens
contact
defect
passivation
effect.
interaction
between
modification
molecules
along
with
SnO2
heightens
incessantly
as
number
S=O
F
augments.
strength
modifiers
well
gradually
increases
increase
in
F.
effect
positively
correlated
strength.
kinetics
regulated
through
compromise
wettability
substrates.
Compared
Cl-,
all
perform
better
optimization,
band
regulation
passivation.
device
bis
(fluorosulfonyl)
imide
achieves
tempting
efficiency
24.17%.
Advanced Materials,
Год журнала:
2023,
Номер
35(23)
Опубликована: Апрель 7, 2023
Interfacial
nonradiative
recombination
loss
is
a
huge
barrier
to
advance
the
photovoltaic
performance.
Here,
one
effective
interfacial
defect
and
carrier
dynamics
management
strategy
by
synergistic
modulation
of
functional
groups
spatial
conformation
ammonium
salt
molecules
proposed.
The
surface
treatment
with
3-ammonium
propionic
acid
iodide
(3-APAI)
does
not
form
2D
perovskite
passivation
layer
while
propylammonium
ions
5-aminopentanoic
hydroiodide
post-treatment
lead
formation
layers.
Due
appropriate
alkyl
chain
length,
theoretical
experimental
results
manifest
that
COOH
NH3+
in
3-APAI
can
coordination
bonding
undercoordinated
Pb2+
ionic
hydrogen
octahedron
PbI64-
,
respectively,
which
makes
both
be
simultaneously
firmly
anchored
on
films.
This
will
strengthen
effect
improve
transport
transfer.
confers
better
than
3-APAI-modified
device
based
vacuum
flash
technology
achieves
an
alluring
peak
efficiency
24.72%
(certified
23.68%),
among
highly
efficient
devices
fabricated
without
antisolvents.
Furthermore,
encapsulated
degrades
less
4%
after
1400
h
continuous
sun
illumination.
Advanced Materials,
Год журнала:
2023,
Номер
35(52)
Опубликована: Апрель 17, 2023
Abstract
In
recent
years,
organic‐inorganic
halide
perovskites
are
now
emerging
as
the
most
attractive
alternatives
for
next‐generation
photovoltaic
devices,
due
to
their
excellent
optoelectronic
characteristics
and
low
manufacturing
cost.
However,
resultant
perovskite
solar
cells
(PVSCs)
intrinsically
unstable
owing
ion
migration,
which
severely
impedes
performance
enhancement,
even
with
device
encapsulation.
There
is
no
doubt
that
investigation
of
migration
summarization
advances
in
inhibition
strategies
necessary
develop
“state‐of‐the‐art”
PVSCs
high
intrinsic
stability
accelerated
commercialization.
This
review
systematically
elaborates
on
generation
fundamental
mechanisms
PVSCs,
impact
hysteresis,
phase
segregation,
operational
stability,
characterizations
PVSCs.
Then,
many
related
works
inhibiting
toward
highly
efficient
stable
summarized.
Finally,
perspectives
current
obstacles
prospective
boost
meet
all
requirements
commercialization
success
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(8)
Опубликована: Янв. 5, 2024
The
instability
of
the
buried
interface
poses
a
serious
challenge
for
commercializing
perovskite
photovoltaic
technology.
Herein,
we
report
polydentate
ligand
reinforced
chelating
strategy
to
strengthen
stability
by
managing
interfacial
defects
and
stress.
bis(2,2,2-trifluoroethyl)
(methoxycarbonylmethyl)phosphonate
(BTP)
is
employed
manipulate
interface.
C=O,
P=O
two
-CF
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(13)
Опубликована: Янв. 10, 2024
Abstract
In
the
domain
of
perovskite
photovoltaics,
heterointerfaces
are
subject
to
substantial
trap‐assisted
non‐radiative
recombination,
predominantly
attributed
energy
offset,
interface
defects,
and
roughness
contact.
This
phenomenon
at
heterointerfaces,
where
carrier
recombination
dissipation
occur
due
defects
suboptimal
level
alignment,
can
be
principally
held
accountable
for
V
oc
losses.
Herein,
a
heterointerface
energetics
regulation
(HER)
strategy
is
proposed
by
introducing
potassium
trifluoroacetate
(KTFA)
in
precursor
solution
eliminate
trap
optimize
surface
potential
Fermi
level.
It
first
demonstrated
that
non‐doping
K
+
but
precipitating
upper
buried
will
improve
energy‐level
alignment
charge
extraction
dynamics.
addition,
TFA
−
exhibits
strong
electrostatic
force
with
undercoordinated
Pb
2+
contact
Sn
4+
SnO
2
electron
transporting
layer.
Based
on
vacuum
flash
evaporation
green
treatment
without
anti‐solvent,
Rb
0.02
(Cs
0.05
FA
0.95
)
0.98
PbI
0.91
Br
0.03
Cl
0.06
Cs
3
based
device
achieve
maximum
efficiency
23.36%
24.48%,
respectively.
Further,
modified
devices
exhibit
92%
initial
output
after
1200
h
aging.
HER
addressing
bandgap
poised
advance
both
performance
stability
solar
cells.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(22)
Опубликована: Янв. 7, 2024
Abstract
The
defects
from
functional
layers
and
interface,
the
agglomeration
of
SnO
2
nanoparticles
(NPs),
poor
perovskite
crystallization
are
main
barrier
to
further
heightening
power
conversion
efficiency
(PCE)
stability
regular
solar
cells.
Here,
a
bottom‐up
multilayer
manipulation
strategy
by
pre‐embedding
multisite
racemic
DL‐cysteine
hydrochloride
monohydrate
(DLCH)
into
electron
transport
layer
(ETL)
is
reported.
positively
negatively
charged
ETL,
their
interface
can
be
passivated
through
synergistic
effect
─SH,
─COOH,
─NH
3
+
,
Cl
−
groups
in
DLCH.
synergy
multiple
chemical
bonds
enables
cross‐layer
passivation,
which
minimizes
bulk
interfacial
nonradiative
recombination
losses.
Furthermore,
multifunctional
DLCH
plays
role
inhibiting
NPs,
managing
photons,
relieving
tensile
stress,
manipulating
crystallization.
Benefiting
above
advantages,
DLCH‐incorporating
device
delivers
PCE
24.01%,
much
higher
than
21.61%
control
device.
Moreover,
DLCH‐modified
devices
demonstrate
inviting
thermal
ambient
stabilities
maintaining
93%
initial
after
aging
at
65
°C
for
1800
h
95%
original
under
relative
humidity
20–25%
2000
h.
