Robust 3D/2D Heterojunction with Oriented Dion-Jacobson Layer for Improved Ion Migration Suppression in Large-Area Inverted Perovskite Solar Cells
Nano Energy,
Год журнала:
2025,
Номер
unknown, С. 111024 - 111024
Опубликована: Апрель 1, 2025
Язык: Английский
Bifunctional Compound Induced Dual Back Surface Fields for Efficient Hole Transport Layer‐Free Perovskite Solar Cells
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 7, 2025
Carbon-based
hole
transport
layer-free
(C-HTL-free)
perovskite
solar
cells
(PSCs)
are
promising
for
low-cost
and
stable
photovoltaics,
but
the
HTL
absence
deteriorates
their
power
conversion
efficiency
(PCE)
due
to
lack
of
back
surface
field
(BSF).
In
this
work,
benefits
forming
dual
BSFs
in
improving
PCE
C-HTL-free
PSCs
first
investigated
by
simulation.
Then,
trityl
tetrakis(pentafluorophenyl)borate
(Tr+TPFB-)
is
introduced
into
post-treatment
time,
which
enables
formation
BSFs.
TPFB-
passivates
n-doping
defects
leads
n-p
homojunction,
while
Tr+
extracts
electrons
from
carbon
lowers
its
work
function,
succeeds
realizing
This
improves
separation
extraction
photocarriers
within
device,
evidenced
photoluminescence
lifetime
imaging
device
cross-section
time.
As
a
result,
average
open-circuit
voltage
increases
significantly
about
70
mV,
largely
contributes
improvement
with
champion
value
20.79%
obtained.
Язык: Английский
Adhesively Bridging Co‐Self‐Assembled Monolayer and Perovskite Via In Situ Polymerization for Enhanced Stability of Inverted Perovskite Solar Cells
Xiaowei Xu,
Sibo Li,
Chengwei Shan
и другие.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Июнь 1, 2025
Abstract
The
strategic
utilization
of
self‐assembled
monolayers
(SAMs)
significantly
advances
the
interfacial
contact
and
power
conversion
efficiency
(PCE)
inverted
perovskite
solar
cells
(IPSCs).
However,
inadequate
adhesion
between
SAM
layer
remains
a
critical
challenge,
limiting
further
performance
enhancement.
Herein,
synergistic
interface
engineering
strategy
is
introduced
that
combines
co‐assembly
approach
with
in
situ
polymerization
to
optimize
buried
film.
Specifically,
11‐Mercaptoundecylphosphoric
acid
(MPA)
incorporated
into
form
co‐SAMs,
improving
homogeneity
mitigating
defects
at
NiO
x
surface.
Simultaneously,
ionic
liquid
(IL)
monomer
1‐Allyl‐3‐vinylimidazolium
bis((trifluoromethyl)sulfonyl)
imide
(AVMTF
2
)
precursor.
aggregation
ILs
cation
bottom
facilitates
via
sulfhydryl
end
groups,
forming
POL‐AVM
polymer
perovskite/SAM
interface.
This
enhances
adhesion,
regulates
crystallization,
reinforces
structural
integrity
by
strongly
anchoring
organic
cations
through
multiple
hydrogen
bonds.
As
result,
this
achieves
champion
PCE
26.25%
(certified
26.04%),
along
excellent
long‐term
stability,
retaining
95.6%
its
initial
after
1000
h
continuous
operation
under
ISOS‐L‐2I
protocol.
Язык: Английский