Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(11)
Published: Jan. 17, 2023
Abstract
The
commercialization
of
perovskite
solar
cells
(PVSCs)
urgently
requires
the
development
green‐solvent
processable
dopant‐free
hole
transporting
materials
(HTMs).
However,
strong
intermolecular
interactions
that
ensure
high
mobility
always
compromise
solubility
and
film‐forming
ability
in
green
solvents.
Herein,
we
show
a
simple
but
effective
design
strategy
to
solve
this
trade‐off,
is,
constructing
star‐shaped
D‐A‐D
structure.
resulting
HTMs
(BTP1‐2)
can
be
processed
by
solvent
2‐methylanisole
(2MA),
kind
food
additive,
multiple
defect
passivation
effects.
An
impressive
efficiency
24.34
%
has
been
achieved
for
2MA‐processed
BTP1
based
inverted
PVSCs,
highest
value
so
far.
Moreover,
it
is
manifested
charge
separation
D‐A
type
at
photoinduced
excited
state
help
passivate
defects
perovskites,
indicating
new
HTM
insight.
Chemical Science,
Journal Year:
2024,
Volume and Issue:
15(8), P. 2778 - 2785
Published: Jan. 1, 2024
Self-assembled
monolayers
(SAMs)
have
been
widely
employed
as
the
bottom-contact
hole-selective
layer
(HSL)
in
inverted
perovskite
solar
cells
(PSCs).
Besides
manipulating
electrical
properties,
molecularly
engineering
SAM
provides
an
opportunity
to
modulate
buried
interface.
Here,
we
successfully
introduced
Lewis-basic
oxygen
and
sulfur
heteroatoms
through
rational
molecular
design
of
asymmetric
SAMs
obtain
two
novel
multifunctional
SAMs,
CbzBF
CbzBT.
Detailed
characterization
single-crystal
structures
device
interfaces
shows
that
enhanced
packing,
more
effective
ITO
work
function
adjustment,
interface
passivation
were
achieved.
Consequently,
champion
PSC
employing
CbzBT
showed
excellent
power
conversion
efficiency
(PCE)
24.0%
with
a
high
fill
factor
84.41%
improved
stability.
This
demonstrates
feasibility
introducing
defect-passivating
heterocyclic
groups
into
molecules
help
passivate
interfacial
defects
PSCs.
The
insights
gained
from
this
strategy
will
accelerate
development
new
HSLs
for
efficient
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
33(10)
Published: Jan. 29, 2023
Abstract
The
self‐assembled
hole
transporting
molecules
(SAHTMs)
bearing
anchoring
groups
have
been
established
as
the
layers
(HTLs)
for
highly
efficient
p–i–n
perovskite
solar
cells
(PSCs),
yet
their
stability
and
engineering
at
molecular
level
remain
challenging.
A
topological
design
of
anisotropic
aligned
SAHTM‐based
HTLs
operationally
stable
PSCs
that
exhibit
exceptional
solar‐to‐electric
power
conversion
efficiencies
(PCEs)
is
demonstrated.
judiciously
designed
multifunctional
comprise
donor–acceptor
subunit
phosphonic
acid
group
anchoring,
realizing
face‐on
π‐stacking
parallel
to
transparent
conductive
oxide
substrate.
high
affinity
SAHTMs
multi‐crystalline
thin
film
benefits
passivating
buried
interface,
strengthening
interfacial
contact
while
facilitating
transfer.
Consequently,
PSC
devices
are
obtained
with
a
champion
PCE
23.24%
outstanding
operational
toward
various
environmental
factors
including
long‐term
full
sunlight
soaking
evaluated
temperatures.
Perovskite
modules
efficiency
approaching
20%
also
fabricated
an
active
device
area
above
17
cm
2
.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
33(17)
Published: Feb. 23, 2023
Abstract
Four
X‐shaped
quinoxaline‐based
organic
dyes,
PQx
(1),
TQx,
(2),
PQxD
(3),
and
TQxD
(4)
(D
=
dye
sensitizers)
are
developed
served
as
p
‐type
self‐assemble
monolayer
(SAM)
for
tin
perovskite
solar
cells
(TPSC).
Thermal,
optical,
electrochemical
properties
of
these
SAMs
thoroughly
investigated
characterized.
Tin
layers
successfully
deposited
on
four
SAM
surfaces
according
to
a
two‐step
approach
the
devices
exhibit
power
conversion
efficiency
in
order
(8.3%)
>
TQx
(8.0%)
(7.1%)
(6.1%).
With
thiophene
π‐extended
conjugation
unit
structure,
exhibits
highest
hole
extraction
rates,
greatest
mobilities,
slowest
charge
recombination
achieve
great
device
performance
8.3%,
which
is
current
best
result
SAM‐based
TPSC
ever
reported.
Furthermore,
all
except
shows
enduring
stability
retaining
≈90%
their
original
values
shelf
storage
over
1600
h.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(35)
Published: June 27, 2024
Abstract
Inverted
perovskite
solar
cells
(PSCs)
have
attracted
considerable
attention
due
to
their
distinct
advantages,
including
minimal
hysteresis,
cost‐effectiveness,
and
suitability
for
tandem
applications.
Nevertheless,
the
solution
processing
low
formation
energy
of
perovskites
inevitably
lead
numerous
defects
formed
at
both
bulk
interfaces
layer.
These
can
act
as
non‐radiative
recombination
centers,
significantly
impeding
carrier
transport
posing
a
substantial
obstacle
stability
further
enhancing
power
conversion
efficiency
(PCE).
This
review
delves
into
detailed
discussion
nature
origin
characterization
techniques
employed
defect
identification.
Furthermore,
it
systematically
summarizes
methods
detection
approaches
passivating
interface
within
film
in
inverted
PSCs.
Finally,
this
offers
perspective
on
employing
upscaling
passivation
engineering
modules.
It
is
hoped
provides
insights
PSCs
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(11)
Published: Jan. 17, 2023
Abstract
The
commercialization
of
perovskite
solar
cells
(PVSCs)
urgently
requires
the
development
green‐solvent
processable
dopant‐free
hole
transporting
materials
(HTMs).
However,
strong
intermolecular
interactions
that
ensure
high
mobility
always
compromise
solubility
and
film‐forming
ability
in
green
solvents.
Herein,
we
show
a
simple
but
effective
design
strategy
to
solve
this
trade‐off,
is,
constructing
star‐shaped
D‐A‐D
structure.
resulting
HTMs
(BTP1‐2)
can
be
processed
by
solvent
2‐methylanisole
(2MA),
kind
food
additive,
multiple
defect
passivation
effects.
An
impressive
efficiency
24.34
%
has
been
achieved
for
2MA‐processed
BTP1
based
inverted
PVSCs,
highest
value
so
far.
Moreover,
it
is
manifested
charge
separation
D‐A
type
at
photoinduced
excited
state
help
passivate
defects
perovskites,
indicating
new
HTM
insight.
