ACS Applied Energy Materials,
Год журнала:
2024,
Номер
7(9), С. 3996 - 4003
Опубликована: Апрель 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
Introducing
2D
perovskite
onto
the
surface
of
3D
could
not
only
passivate
defects
in
perovskite,
but
also
protect
from
humidity
invasion,
which
improve
device
stability.
The
choice
spacer
cations
perovskites
directly
influences
overall
properties
layer,
is
crucial
to
efficiency
and
stability
devices.
Herein,
trifluoromethyl
benzylamine
developed
as
cation,
effects
–CF
3
at
different
substitution
positions
on
morphology,
carrier
dynamics,
performances
are
systematically
investigated.
Results
show
that
3‐TFPMAI‐treated
2D/3D
film
shows
smoother
with
fewer
less
nonradiative
recombination.
Moreover,
a
matched
energy
level,
3‐TFPMAI
modification
can
accelerate
hole
extraction
transporting.
cell
achieves
champion
22.68%.
What's
more,
introduction
fluoride‐containing
groups
increases
hydrophobicity
effectively
resists
moisture
erosion
greatly
improves
long‐term
operational
solar
cells.
The Journal of Physical Chemistry Letters,
Год журнала:
2023,
Номер
14(19), С. 4409 - 4418
Опубликована: Май 4, 2023
Perovskite
solar
cells
are
considered
to
be
important
candidates
for
future
energy
applications.
The
facet
orientation
causes
anisotropy
in
the
photoelectric
and
chemical
properties
of
surface
perovskite
films
therefore
might
affect
photovoltaic
stability
devices.
Facet
engineering
has
attracted
increasing
attention
only
recently
cell
community,
related
deep
investigation
is
rather
rare.
To
date,
it
still
difficult
precisely
regulate
directly
observe
with
specific
crystal
facets
due
limitations
solution
methods
characterization
technology.
Consequently,
link
between
performance
controversial.
Herein,
we
highlight
latest
progress
means
direct
regulation
briefly
analyze
existing
issues
perspectives
photovoltaics.
Energy Materials and Devices,
Год журнала:
2024,
Номер
2(1), С. 9370029 - 9370029
Опубликована: Март 1, 2024
Small-molecule
ionic
liquids
(ILs)
are
frequently
employed
as
efficient
bulk
phase
modifiers
for
perovskite
materials.
However,
their
inherent
characteristics,
such
high
volatility
and
ion
migration
properties,
pose
challenges
in
addressing
the
stability
issues
associated
with
solar
cells
(PSCs).
Here,
we
design
a
poly
(IL)
multiple
active
sites,
named
poly[4-styrenesulfonyl(trifluoromethylsulfonyl)imide]pyridine
(P[STFSI][PPyri]),
an
additive
of
The
S=O
sulfonyl
group
chelates
uncoordinated
Pb2+
forms
hydrogen
bonds
organic
cations
perovskite,
suppressing
volatilization
cations.
N+
pyridine
can
fix
halide
ions
through
electrostatic
interaction
I−,
Br−
ionsto
prevent
migration.
P[STFSI][PPyri]
demonstrates
ability
to
passivate
defects
suppress
non-radiative
recombination
PSCs.
Additionally,
it
facilitates
fixation
ions,
thereby
enhancing
both
photoelectric
performance
device.
Consequently,
introduction
dopant
devices
results
champion
efficiency
24.62%,
demonstrating
outstanding
long-term
operational
stability,
encapsulated
device
maintaining
87.6%
its
initial
even
after
1500
hours
continuous
maximum
power
point
tracking.
This
strategy
highlights
promising
potential
effective
PSCs,
providing
combination
stability.
ACS Applied Energy Materials,
Год журнала:
2024,
Номер
7(9), С. 3996 - 4003
Опубликована: Апрель 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
