IntechOpen eBooks,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 23, 2024
Two-dimension
(2D)
hybrid
organic-inorganic
perovskites
(HOIPs)
are
formed
naturally
multiple-quantum-well
structures
with
a
much
larger
carrier
binding
energy,
which
possess
stable
excitons
even
at
room
temperature.
In
addition,
2D
HOIPs
allow
us
to
exfoliate
them
into
ultrathin
flakes
and
stack
various
heterostructures,
extending
their
photophysical
properties.
Therefore,
promising
candidates
for
optoelectronic
device
applications,
such
as
light-emitting
diodes,
lasing,
etc.
this
chapter,
summary
of
the
crystal
HOIP
crystals
excitonic
properties,
current
research
progress
heterostructures
revealed.
Next,
high-pressure
technology
will
be
studied
in
detail
on
effective
engineering
exciton
properties
toward
significantly
optimizing
functionalities.
Finally,
is
given,
strategy
manipulation
perovskite-based
rationalized
next-generation
high-performance
devices.
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(19)
Published: March 12, 2024
Abstract
Organisch–anorganische
Heterostrukturen
spielen
eine
zentrale
Rolle
in
modernen
elektronischen
und
optoelektronischen
Anwendungen.
Dazu
gehören
Photodetektoren
Feldeffekttransistoren
sowie
die
Umwandlung
von
Solarenergie
mithilfe
Photoelektroden
für
Farbstoffsolarzellen,
photoelektrochemischen
Zellen
organischen
Photovoltaiksystemen.
Die
Leistung
solcher
Systeme
wird
zu
großen
Teilen
durch
Dynamik
des
Ladungstransfers
an
zwischen
(inneren)
Grenzflächen,
z.
B.
einem
Halbleiter
mit
großer
Bandlücke
molekularen
Sensibilisatoren
und/oder
Katalysatoren,
bestimmt.
Daher
ist
ein
detailliertes
Verständnis
der
Beziehung
Struktur,
Funktion
funktionalen
Grenzflächen
notwendig,
um
mögliche
Limitationen
Leistungsfähigkeit
dieser
Materialien
auf
molekularer
Ebene
erklären.
Summenfrequenzspektroskopie
(SFS)
als
grenzflächenempfindliche
Technik
ermöglicht
es,
spezifische
chemische
Informationen
über
erhalten.
Wird
diese
Anregungs‐Abfrage‐Schema
integriert,
liefert
sie
neben
solchen
chemischen
Erkenntnissen
ultraschnelle
Zeitauflösung.
Dieser
Mini‐Review‐Artikel
diskutiert
Vorteile
das
Potenzial
SFS
Untersuchung
Ladungstransferdynamiken
strukturellen
Veränderungen
inneren
Grenzflächen.
Es
wichtiger
Beitrag
einzigartigen
spektroskopischen
Einblicke
ansonsten
unzugängliche
vorgestellt,
der,
so
hoffen
wir,
neue
Wege
besseres
funktionsbestimmenden
Prozesse
komplexen
aufzeigt.
Damit
sollen
Gemeinschaften,
sich
dem
Design
Bauteilen
widmen,
Spektroskopikern
zusammengebracht
werden.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 1, 2024
Abstract
Type‐II
heterostructures
are
crucial
components
in
optoelectronic
devices
such
as
photovoltaics
and
photodetectors.
Previous
studies
have
shown
that
interlayer
charge
transfer
(CT)
is
the
dominant
carrier
relaxation
mechanism
type‐II
of
2D
materials.
In
this
study,
it
demonstrated
composed
organic–inorganic
hybrid
perovskites
(OIHPs),
conventional
CT
process
can
transition
to
an
energy
(ET)
without
requiring
additional
charge‐blocking
interlayer.
The
results
indicate
predominates
which
both
layers
same
organic
spacer,
particularly
BA
2
PbI
4
/BA
MA
Pb
3
I
10
.
Notably,
when
spacer
replaced
with
PEA
one
layer
heterostructure,
/PEA
,
shifts
from
ET.
Although
exhibit
band
alignment,
density
functional
theory
calculations
reveal
substitution
creates
a
novel
alignment.
This
new
alignment
inhibits
electron
hole
separation,
thereby
favoring
ET
over
CT.
study
not
only
provides
significant
insight
into
dynamics
but
also
for
future
deterministic
design
OIHPs
heterostructure‐based
devices.
IntechOpen eBooks,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 23, 2024
Two-dimension
(2D)
hybrid
organic-inorganic
perovskites
(HOIPs)
are
formed
naturally
multiple-quantum-well
structures
with
a
much
larger
carrier
binding
energy,
which
possess
stable
excitons
even
at
room
temperature.
In
addition,
2D
HOIPs
allow
us
to
exfoliate
them
into
ultrathin
flakes
and
stack
various
heterostructures,
extending
their
photophysical
properties.
Therefore,
promising
candidates
for
optoelectronic
device
applications,
such
as
light-emitting
diodes,
lasing,
etc.
this
chapter,
summary
of
the
crystal
HOIP
crystals
excitonic
properties,
current
research
progress
heterostructures
revealed.
Next,
high-pressure
technology
will
be
studied
in
detail
on
effective
engineering
exciton
properties
toward
significantly
optimizing
functionalities.
Finally,
is
given,
strategy
manipulation
perovskite-based
rationalized
next-generation
high-performance
devices.
