Nickel
oxide
(NiO)
is
a
promising
hole
transport
layer
(HTL)
that
can
be
used
to
fabricate
efficient,
large‐scale
inverted‐type
perovskite
solar
cells
(PSCs).
However,
depositing
high‐quality
on
NiO
substrates
comparable
those
realized
in
the
normal
structure
still
presents
challenge.
Herein,
pyridinium
tetrafluoroborate
(PyBF
4
)
additive
introduced
passivate
intrinsic
defects
bulk
films.
The
nitrogen
Lewis
base
PyBF
molecule
interacts
well
with
uncoordinated
Pb
2+
cations,
leading
films
minimized
defects.
Meanwhile,
pseudohalide
BF
−
fill
halogen
vacancies
enable
defect
passivation.
As
result,
precursor
solution
shows
better
reproducibility
for
high‐efficiency
devices.
optimal
PSC
based
modification
yields
champion
power
conversion
efficiency
of
22.7%
atomic
deposited
as
HTL.
Abstract
Inverted
perovskite
solar
cells
(PSCs)
have
become
a
current
research
hotspot
due
to
their
advantages
such
as
low‐temperature
preparation,
low
hysteresis,
and
compatibility
with
stacked
other
cells.
NiO
x
,
metal
oxide
hole
transport
layer
material,
is
widely
used
in
inverted
PSCs.
However,
challenges
high
defect
density,
intrinsic
conductivity,
unfavorable
valence
band
mismatch
at
the
/perovskite
interface
hinder
further
improvement
of
device
performance.
Therefore,
enhancing
buried
between
layers
crucial
for
optimizing
This
review
systematically
categorizes
materials
based
on
types,
including
organic
small
molecules,
self‐assembled
monolayers
(SAMs),
polymers,
salts.
Additionally,
it
incorporates
strategies,
introduction
low‐dimensional
materials,
doping,
advancements
deposition
technology.
By
reviewing
technologies
past
2
years,
this
article
aims
provide
insights
achieve
more
efficient
stable
‐based
Finally,
we
also
discuss
future
directions
challenges.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(47), С. 64424 - 64446
Опубликована: Ноя. 16, 2024
Due
to
the
advantages
of
low
interface
resistance,
high
work
function,
and
stability,
PACz
family
materials
have
developed
rapidly
in
p-i-n
structure
perovskite
solar
cells
(PSCs)
recent
years.
Numerous
studies
shown
that
PSCs
prepared
on
basis
or
their
derivatives
as
hole
transport
layers
(HTLs)
generally
exhibit
superior
performance
compared
organic
HTL
PTAA
inorganic
NiO
Indoor
photovoltaics
(IPV)
plays
a
critical
role
in
powering
low‐consumption
devices
within
the
rapidly
growing
Internet
of
Things
(IoT).
Perovskite
solar
cells
(PSCs)
have
demonstrated
impressive
indoor
power
conversion
efficiencies
(iPCEs)
exceeding
40%,
driven
by
advancements
bulk
and
surface
passivation
techniques.
These
approaches
mitigate
trap
states
recombination
losses,
significantly
enhancing
device
efficiency
long‐term
stability.
This
study
investigates
impact
on
PSC
performance
employing
iodide‐based
passivators—phenethylammonium
iodide
(PEAI),
octylammonium
(OAI),
guanidinium
(GUI)—alongside
Lewis
base
molecule
1,3‐bis(diphenylphosphino)propane
(DPPP),
which,
to
best
our
knowledge,
is
introduced
for
first
time
n‐i‐p
structured
PSCs.
SEM
XRD
analyses
revealed
that
DPPP‐passivated
samples
exhibited
superior
morphological
structural
stability
after
ambient
aging
compared
other
passivations.
Under
1000
Lx
LED
light
illumination,
achieved
an
iPCE
33.14%,
closely
approaching
highest
34.47%
obtained
with
PEAI.
Furthermore,
under
thermal
stress
(85°C)
T80
753
h.
highlights
layers
low
conditions,
paving
way
more
effective
strategies
advance
perovskite
materials
IPV
applications.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 11, 2024
Abstract
The
copper
content
in
sulfide
significantly
influences
the
material
properties,
potentially
affecting
interfacial
non‐radiative
recombination
perovskite
solar
cells.
Here,
a
simple
ball‐milling
strategy
is
used
to
obtain
Cu‐poor
(cupric
sulfide,
CuS)
and
Cu‐rich
(cuprous
Cu
2
S)
nanoparticles
(in
which
CuS
S
are
dominant
phases
respectively,
containing
mixture
of
CuO/Cu(OH)
species)
from
commercial
cupric‐
cuprous‐sulfide
powders
respectively.
resulting
exhibit
well‐crystallized
hexagonal
structure,
suppressing
formation
harmful
byproducts.
Additionally,
uniformly
cover
perovskite,
effectively
addressing
residual
PbI
at
grain
boundaries
constructing
hole‐transport
channel
interface
between
spiro‐OMeTAD
[2,2′,7,7′‐tetrakis
(N,
N‐di‐p‐methoxyphenylamine)‐9,9′‐spirobifluorene].
In
contrast,
non‐crystalline
structure
with
excessive
Their
aggregation
non‐uniform
morphology
on
surface
likely
result
charge‐controlled
interactions
big
bond
polarity
cupric
sulfide.
Moreover,
presence
byproducts
increases
hydrophilic
sites,
weakening
defect
passivation
compromising
device
performance.
Consequently,
cells
using
copper‐rich
layers
achieved
champion
power
conversion
efficiency
(PCE)
over
25%
maintained
≈87%
initial
PCE
after
2,300
h
storage
air,
outperforming
S‐based
devices.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(31), С. 41230 - 41243
Опубликована: Июль 25, 2024
Herein,
we
present
a
series
of
stable
radicals
containing
trityl
carbon-centered
radical
moiety
exhibiting
interesting
properties.
The
demonstrate
the
most
blue-shifted
anti-Kasha
doublet
emission
reported
so
far
with
high
color
purity
(full
width
at
half-maximum
46
nm)
and
relatively
photoluminescence
quantum
yields
deoxygenated
toluene
solutions
reaching
31%.
equilibrated
bipolar
charge
transport
mobility
values
10-4
cm2/V·s
electric
fields.
experimental
results
in
combination
TD-DFT
calculations
confirm
that
blue
violates
Kasha
rule
originates
from
higher
excited
states,
whereas
properties
are
found
to
stem
particularity
involve
same
molecular
orbital(s)
electron
hole
transport.
act
as
efficient
materials
for
interlayers,
passivating
interfacial
defects
enhancing
extraction
PSCs.
Consequently,
this
leads
outstanding
performance
PSC,
power
conversion
efficiency
surpassing
21%,
accompanied
by
remarkable
increase
open-circuit
voltage
exceptional
stability.
