Abstract
Monolithic
perovskite/silicon
tandem
solar
cells
have
been
attracted
much
attention
in
recent
years.
Despite
their
high
performances,
the
stability
issue
of
perovskite‐based
devices
is
recognized
as
one
key
challenges
to
realize
industrial
application.
When
comes
perovskite
top
subcell,
interface
between
and
electron
transporting
layers
(usually
C
60
)
significantly
affects
device
efficiency
well
due
poor
adhesion.
Here,
different
from
conventional
interfacial
passivation
using
metal
fluorides,
a
hybrid
intermediate
layer
proposed—PMMA
functionalized
with
ionic
liquid
(IL)—is
introduced
at
perovskite/C
interface.
The
application
PMMA
essentially
improves
its
strong
hydrophobicity,
while
adding
IL
relieves
charge
accumulation
perovskite.
Thus,
an
optimal
wide‐bandgap
achieves
power
conversion
20.62%.
These
are
further
integrated
subcells
silicon
bottom
monolithic
structure,
presenting
optimized
PCE
up
27.51%.
More
importantly,
such
exhibit
superior
by
maintaining
90%
initial
after
1200
h
under
continuous
illumination.
Nano Letters,
Год журнала:
2023,
Номер
23(19), С. 8850 - 8859
Опубликована: Сен. 25, 2023
Defect
passivation
is
crucial
to
enhancing
the
performance
of
perovskite
solar
cells
(PSCs).
In
this
study,
we
successfully
synthesized
a
novel
organic
compound
named
DPPO,
which
consists
double
phosphonate
group.
Subsequently,
incorporated
DPPO
into
solution.
The
presence
P═O
group
interacting
with
undercoordinated
Pb2+
yielded
film
superior
crystallinity,
greater
crystal
orientation,
and
smoother
surface.
Additionally,
addition
can
passivate
defect
states
enhance
upper
layer
energy
level
alignment,
will
improve
carrier
extraction
prevent
nonradiative
recombination.
Consequently,
an
impressive
champion
efficiency
24.24%
was
achieved
minimized
hysteresis.
Furthermore,
DPPO-modified
PSCs
exhibit
enhanced
durability
when
exposed
ambient
conditions,
maintaining
95%
initial
for
1920
h
at
average
relative
humidity
(RH)
30%.
Abstract
Interfacial
engineering
is
a
vital
strategy
to
enable
high‐performance
perovskite
solar
cells
(PSCs).
To
develop
efficient,
low‐cost,
and
green
biomass
interfacial
materials,
here,
bifunctional
cellulose
derivative
presented,
6‐O‐[4‐(9H‐carbazol‐9‐yl)butyl]‐2,3‐di‐O‐methyl
(C‐Cz),
with
numerous
methoxy
groups
on
the
backbone
redox‐active
carbazole
units
as
side
chains.
The
C‐Cz
shows
excellent
energy
level
alignment,
good
thermal
stability
strong
interactions
surface,
all
of
which
are
critical
for
not
only
carrier
transportation
but
also
potential
defects
passivation.
Consequently,
modifier,
PSCs
achieve
remarkably
enhanced
power
conversion
efficiency
(PCE)
23.02%,
along
significantly
long‐term
stability.
These
results
underscore
advantages
materials
layers
effective
charge
transport
properties
passivation
capability
efficient
stable
PSCs.
Nano-Micro Letters,
Год журнала:
2024,
Номер
16(1)
Опубликована: Апрель 29, 2024
Abstract
In
perovskite
solar
cells
(PSCs),
the
inherent
defects
of
film
and
random
distribution
excess
lead
iodide
(PbI
2
)
prevent
improvement
efficiency
stability.
Herein,
natural
cellulose
is
used
as
raw
material
to
design
a
series
derivatives
for
crystallization
engineering.
The
cationic
derivative
C-Im-CN
with
cyano-imidazolium
(Im-CN)
cation
chloride
anion
prominently
promotes
process,
grain
growth,
directional
orientation
perovskite.
Meanwhile,
PbI
transferred
surface
grains
or
formed
plate-like
crystallites
in
local
domains.
These
effects
result
suppressing
defect
formation,
decreasing
boundaries,
enhancing
carrier
extraction,
inhibiting
non-radiative
recombination,
dramatically
prolonging
lifetimes.
Thus,
PSCs
exhibit
high
power
conversion
24.71%.
Moreover,
has
multiple
interaction
sites
polymer
skeleton,
so
unencapsulated
maintain
above
91.3%
their
initial
efficiencies
after
3000
h
continuous
operation
conventional
air
atmosphere
have
good
stability
under
humidity
conditions.
utilization
biopolymers
excellent
structure-designability
manage
opens
state-of-the-art
avenue
manufacturing
improving
PSCs."Image
missing"
Dalton Transactions,
Год журнала:
2023,
Номер
52(45), С. 16558 - 16577
Опубликована: Янв. 1, 2023
Perovskite
solar
cells
(PSCs)
were
first
proposed
in
2009.
They
have
the
advantages
of
low
cost,
a
simple
manufacturing
process
and
excellent
photoelectric
performance.
PSC
electrodes
are
mainly
made
from
precious
metals
such
as
gold
silver.
Still,
cost
is
high
they
react
with
other
components
PSCs,
resulting
poor
stability
photovoltaic
device.
Using
carbon
an
electrode
material
can
both
reduce
significantly
improve
However,
interface
contact
between
perovskite
resistance
results
device
Finding
way
to
successfully
utilize
alternative
key
step
toward
moving
PSCs
laboratory
industrialization.
This
paper
reviews
application
black,
graphite,
graphene,
nanotubes
(CNTs)
composite
focusing
on
progress
research
doping,
structure,
modification
production
process.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(44)
Опубликована: Авг. 13, 2024
Abstract
State‐of‐the‐art
perovskite
solar
cells
(PSCs)
continue
to
encounter
stability
challenges
throughout
their
current
commercialization
process,
primarily
due
the
instable
organic
components.
Especially,
surface
(interface)
imperfections,
like
undercoordinated
Pb
2+
and
halide
sites,
further
compromise
confinement
of
cations
at
provide
a
rapid
pathway
for
ion
migration
volatilization,
decreasing
efficiency.
Herein,
study
has
developed
Formamidine
(FA)
cation
immobilization
strategy
through
hydrogen
bond
effect,
achieved
by
post‐treatment
piperazine
dihydrochloride
(PDCl
2
),
obtain
stable
FA‐based
perovskites.
The
can
immobilize
FA
+
bond.
Moreover,
PDCl
induce
Cl
–
doping
establish
strong
coordinating
with
uncoordinated
,
reducing
imperfections
octahedral
cage.
Such
synergistic
effect
effectively
constrains
cations,
simultaneously
alleviates
lattice
stress.
Because
improved
properties,
resultant
demonstrates
not
only
outstanding
light/thermal
stability,
but
also
more
pronounced
n‐type
characteristics
uniform
potential
distribution
improving
charge
transfer
dynamics.
Finally,
champion
PSCs
exhibit
significantly
enhanced
efficiency
from
23.15%
25.52%.
these
excellent
stability:
retain
91%
initial
after
over
1000
h
maximum
power
point
test.
