ACS Applied Energy Materials,
Journal Year:
2024,
Volume and Issue:
7(9), P. 3996 - 4003
Published: April 24, 2024
Although
poly[bis(4-phenyl)
(2,4,6-trimethylphenyl)
amine]
(PTAA)
has
been
widely
applied
in
inverted
perovskite
solar
cells,
inherent
poor
conductivity
and
energy
level
mismatch
seriously
constrain
development
of
the
power
conversion
efficiency
(PCE)
PTAA-based
cells.
Herein,
a
high-hole-mobility
small
molecule
α-6T
is
employed
as
PTAA
solution
dopant
for
cells
to
solve
above
issues.
significantly
increases
hole
mobility
films
decreases
barrier
at
PTAA/perovskite
interface,
leading
enhanced
carrier
extraction
suppressed
recombination.
Furthermore,
wettability
film
also
improved.
As
result,
doped
device
shows
champion
PCE
22.23%,
which
observably
higher
than
20.24%
control
device.
What's
more,
unencapsulated
devices
maintain
∼80%
initial
after
being
stored
under
air
conditions
1500
h.
This
strategy
provides
simple
way
fabricate
high-performance
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(24)
Published: March 8, 2024
Crystallization
orientation
plays
a
crucial
role
in
determining
the
performance
and
stability
of
perovskite
solar
cells
(PVSCs),
whereas
effective
strategies
for
realizing
oriented
crystallization
is
still
lacking.
Herein,
facile
efficient
top-down
strategy
reported
to
manipulate
via
treating
wet
film
with
propylamine
chloride
(PACl)
before
annealing.
The
PA
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(21)
Published: March 26, 2024
Abstract
Developing
an
additive
to
effectively
regulate
the
perovskite
crystallization
kinetics
for
optimized
optoelectronic
properties
of
film
plays
a
vital
role
in
obtaining
high
efficiency
and
stable
solar
cells
(PSCs).
Herein,
new
is
designed
directly
synthesized
precursor
solution
by
utilizing
addition
reaction
between
but‐3‐yn‐1‐amine
hydrochloride
(BAH)
formamidinium
iodide.
It
found
that
its
product
may
control
intermediate
phase
regulating
nucleation,
leading
advantageous
2D
induce
growth
along
preferred
[001]
orientation
with
not
only
released
lattice
strain
but
also
strong
interaction
passivate
surface
defects.
By
taking
advantage
above
synergistic
effects,
PSC
delivers
25.19%
open‐circuit
voltage
(
V
OC
)
1.22
V.
Additionally,
devices
demonstrate
good
stability,
remaining
over
90%
their
initial
efficiencies
under
ambient
atmosphere
conditions
60
days,
temperature
85
°C
200
h,
or
maximum
power
point
tracking
500
h.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
34(4)
Published: Oct. 17, 2023
Abstract
Heterojunction
perovskite
solar
cells
combine
the
stability
of
2D
perovskites
and
high
efficiency
3D
perovskites,
making
them
an
excellent
photovoltaic
candidate.
While
heterojunctions
with
intermixed
or
gradient
can
reduce
surface
recombination,
aggregation
phase
distribution
induce
transport
losses,
thereby
limiting
device
fill
factors.
Accordingly,
a
bulk
in
situ
reconstruction
(BISR)
strategy
is
proposed
to
on
minim
self‐assembled
crystal
seed,
forming
heterojunction
that
runs
through
entire
active
layer.
This
facilitates
charge
extraction,
relieves
tensile
stress,
avoids
decomposition
grain
boundaries.
As
result,
best‐performing
show
high‐power
conversion
(PCE)
24.06%
82.9%
FF
for
small‐area
(0.105
cm
2
)
superior
PCE
19.2%
large‐area
module
(5
×
5
).
Importantly,
unencapsulated
shows
dramatically
improved
operational
stability,
maintaining
87%
its
initial
after
8000
h
storage
under
ambient
atmosphere
at
room
temperature.
work
provides
effective
simple
approach
establish
simultaneously
boost
PSCs.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(31)
Published: June 3, 2023
Lithium
bis(trifluoromethanesulfonyl)imide
(Li-TFSI)
has
been
identified
as
the
most
used
and
effective
p-dopant
for
hole
transport
layer
(HTL)
in
perovskite
solar
cells
(PSCs).
However,
migration
agglomeration
of
Li-TFSI
HTL
negatively
impact
PSCs
performance
stability.
Herein,
we
report
an
strategy
adding
a
liquid
crystal
organic
small
molecule
(LQ)
into
doped
(2,2',7,7'-tetrakis(N,N-di-p-methoxyphenylamine)-9,9'-
spirobifluorene
(Spiro-OMeTAD)
HTL.
It
was
found
that
introduction
LQ
Spiro-OMeTAD
can
efficiently
enhance
charge
carrier
extraction
transportation
device,
which
strongly
retard
recombination
device.
Consequently,
efficiency
is
significantly
enhanced
to
24.42
%
(Spiro-OMeTAD+LQ)
from
21.03
(Spiro-OMeTAD).
The
chemical
coordination
between
confine
Li+
ions
Li-TFSI,
thus,
achieving
device
Only
9
degradation
observed
un-encapsulated
prepared
with
after
1700
h
under
air
environment,
while
drops
by
30
reference
This
work
provides
improving
stability
PSCs,
gives
some
important
insights
understanding
intrinsic
hot
carriers
dynamics
perovskite-based
optoelectronic
devices.
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
16(1)
Published: April 11, 2024
Abstract
Although
covalent
organic
frameworks
(COFs)
with
high
π
-conjugation
have
recently
exhibited
great
prospects
in
perovskite
solar
cells
(PSCs),
their
further
application
PSCs
is
still
hindered
by
face-to-face
stacking
and
aggregation
issues.
Herein,
metal–organic
framework
(MOF-808)
selected
as
an
ideal
platform
for
the
situ
homogeneous
growth
of
a
COF
to
construct
core–shell
MOF@COF
nanoparticle,
which
could
effectively
inhibit
aggregation.
The
synergistic
intrinsic
mechanisms
induced
nanoparticles
reinforcing
stability
mitigating
lead
leakage
been
explored.
complementary
utilization
-conjugated
skeletons
nanopores
optimize
crystallization
large-grained
films
eliminate
defects.
resulting
achieve
impressive
power
conversion
efficiency
23.61%
superior
open
circuit
voltage
(1.20
V)
maintained
approximately
90%
original
after
2000
h
(30–50%
RH
25–30
°C).
Benefiting
from
effects
chemical
fixation
adsorption
abilities
nanoparticles,
amount
unpackaged
soaked
water
(<
5
ppm)
satisfies
laboratory
assessment
required
Resource
Conservation
Recovery
Act
Regulation.
Energy & Environmental Science,
Journal Year:
2024,
Volume and Issue:
17(20), P. 7566 - 7599
Published: Jan. 1, 2024
This
work
summarizes
various
degradation
mechanisms
relevant
for
perovskite
photovoltaics
on
different
levels
from
the
single
layers
over
(tandem)
solar
cells
to
modules
hereof
and
their
mitigation
strategies
enable
reliable
modules.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 16, 2024
Different
facets
in
perovskite
crystals
exhibit
distinct
atomic
arrangements,
influencing
their
electronic,
physical,
and
chemical
properties.
Perovskite
films
incorporating
tin
oxide
(SnO
