Solar RRL,
Journal Year:
2024,
Volume and Issue:
8(8)
Published: March 23, 2024
Currently,
achieving
both
high
efficiency
and
long‐term
stability
is
crucial
for
the
successful
application
of
perovskite
solar
cells
(PSCs).
Grain
boundary
(GB)
defects
significantly
impact
PSCs,
passivating
these
GBs
remains
a
major
challenge.
Herein,
surfactant
dodecyltrimethylammonium
chloride
(DTAC)
dissolved
in
low‐polarity
chlorobenzene
(CB)
at
58
°C
to
modify
interface
MAPbI
3
film,
DTAC
reacts
with
film
surface
generate
protective
layer
that
can
be
covered
on
grains,
effectively
reducing
expose
GBs.
Additionally,
hydrophobic
alkyl
chains
DTA
+
strong
chemical
bond
between
Cl
−
Pb
2+
ions
further
enhance
resistance
heat,
moisture,
oxidation.
Due
passivation
iodine
vacancy
defects,
photo‐stability
unencapsulated
devices
improved.
By
crystals,
power
conversion
low‐temperature
carbon‐based
PSCs
treated
by
15.03%
compared
13.97%
control
device.
This
study
offers
another
referable
strategy
enhancing
thermal,
light,
oxygen
materials
while
considering
photovoltaic
performance
devices.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(13), P. 16340 - 16350
Published: March 21, 2024
As
an
additive
for
perovskites,
in
addition
to
functional
groups,
the
steric
configuration
of
molecules
is
worthy
consideration
because
it
influences
perovskite
crystallization,
thus
determining
whether
defect
passivation
effective
without
any
side
effects.
In
this
work,
chiral
l-
and
d-pyroglutamic
acid
(l-PA
d-PA)
were
chosen
as
additives
passivators
reveal
reasons
differences
between
amino
acids
with
different
configurations.
Functional
such
C═O
groups
N–H
l-PA
d-PA,
can
passivate
defects.
However,
exhibited
a
more
distorted
configuration,
while
d-PA
was
planar,
leading
distances
two
groups.
Taking
Pb–Pb
bond
length
reference,
shorter
distance
distorts
lattice
structure,
which
results
poor
device
stability.
Conversely,
similar
promoted
preferred
orientational
growth
perovskite.
Finally,
d-PA-doped
accomplished
excellent
efficiency
24.11%
improved
open-circuit
voltage
1.17
V.
Furthermore,
unencapsulated
maintained
at
93%
N2
than
3000
h
74%
after
500
operation
maximum
power
point
tracking
under
continuous
illumination.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 14, 2024
Abstract
Despite
the
remarkable
advances
in
field
of
perovskite
photovoltaics,
use
toxic
solvents
for
their
fabrication
poses
a
significant
challenge
to
scale‐up
and
commercialization.
The
vast
majority
studies
rely
on
using
highly
hazardous
N,
N‐Dimethylformamide
(DMF),
with
green
alternatives
remaining
scarce.
In
this
work,
glycerol
formal
(Gly‐F)
is
reported
as
solvent
fabricating
quasi‐2D
(
n
=
5)
solar
cells.
Quasi‐2D
films
processed
from
Gly‐F
exhibit
high
degree
uniformity
compact
microstructure.
When
integrated
into
cells,
solvent‐processed
reach
promising
power
conversion
efficiency
14.53%.
This
performance
lower
than
that
DMF‐based
perovskites,
most
likely
due
presence
laterally
oriented
low
phases.
Interestingly,
while
devices
rather
irreproducible,
Gly‐F‐based
robust
consistent.
These
results
demonstrate
potential
Gly‐F‐
alternative
DMF.
Solar RRL,
Journal Year:
2024,
Volume and Issue:
8(8)
Published: March 13, 2024
In
the
rapidly
developing
field
of
photovoltaics,
organic–inorganic
metal
halide
perovskites
are
outstanding
for
their
exceptional
power
conversion
efficiencies
(PCE),
exceeding
26%.
However,
full
potential
these
materials
is
often
undermined
by
prevalence
defects
within
structure
and
at
grain
surfaces,
leading
to
significant
nonradiative
recombination
losses.
To
meet
this
critical
challenge,
study
introduces
a
novel
strategy
involving
pyrrolidinium
derivative
tetrafluoroborate
ionic
liquid,
specifically
2‐pyrrolidin‐1‐ium‐1‐ethylammonium
(PyE(BF
4
)
2
),
as
an
additive
in
perovskite
precursor.
This
approach
aims
meticulously
control
crystallization
processes
effectively
passivate
on
surface
boundaries
perovskite.
The
formation
N─H…I
−
hydrogen
bonds
strong
interactions,
PyE(BF
not
only
stabilizes
[PbI
6
]
4−
framework
but
also
optimizes
valence
band
alignment
with
hole
transport
layer.
Empirical
results
demonstrate
that
solar
cells
modified
have
achieved
notable
PCE
23.80%
remarkable
stability
1300
h
under
standard
testing
protocols
(ISOS‐V‐1).
findings
emphasize
transformative
multifunctional
liquids
enhancing
performance
durability
perovskite‐based
photovoltaic
devices,
marking
step
forward
pursuing
sustainable
efficient
energy
solutions.
Solar RRL,
Journal Year:
2024,
Volume and Issue:
8(8)
Published: March 23, 2024
Currently,
achieving
both
high
efficiency
and
long‐term
stability
is
crucial
for
the
successful
application
of
perovskite
solar
cells
(PSCs).
Grain
boundary
(GB)
defects
significantly
impact
PSCs,
passivating
these
GBs
remains
a
major
challenge.
Herein,
surfactant
dodecyltrimethylammonium
chloride
(DTAC)
dissolved
in
low‐polarity
chlorobenzene
(CB)
at
58
°C
to
modify
interface
MAPbI
3
film,
DTAC
reacts
with
film
surface
generate
protective
layer
that
can
be
covered
on
grains,
effectively
reducing
expose
GBs.
Additionally,
hydrophobic
alkyl
chains
DTA
+
strong
chemical
bond
between
Cl
−
Pb
2+
ions
further
enhance
resistance
heat,
moisture,
oxidation.
Due
passivation
iodine
vacancy
defects,
photo‐stability
unencapsulated
devices
improved.
By
crystals,
power
conversion
low‐temperature
carbon‐based
PSCs
treated
by
15.03%
compared
13.97%
control
device.
This
study
offers
another
referable
strategy
enhancing
thermal,
light,
oxygen
materials
while
considering
photovoltaic
performance
devices.
