Ruddlesden-Popper-Phase Hybrid Halide Perovskite/Small-Molecule Organic Blend Memory Transistors

© 2020 Wiley-VCH GmbH..

Controlling the morphology of metal halide perovskite layers during processing is critical for the manufacturing of optoelectronics. Here, a strategy to control the microstructure of solution-processed layered Ruddlesden-Popper-phase perovskite films based on phenethylammonium lead bromide ((PEA)2 PbBr4 ) is reported. The method relies on the addition of the organic semiconductor 2,7-dioctyl[1]benzothieno[3,2-b]benzothiophene (C8 -BTBT) into the perovskite formulation, where it facilitates the formation of large, near-single-crystalline-quality platelet-like (PEA)2 PbBr4 domains overlaid by a ≈5-nm-thin C8 -BTBT layer. Transistors with (PEA)2 PbBr4 /C8 -BTBT channels exhibit an unexpectedly large hysteresis window between forward and return bias sweeps. Material and device analysis combined with theoretical calculations suggest that the C8 -BTBT-rich phase acts as the hole-transporting channel, while the quantum wells in (PEA)2 PbBr4 act as the charge storage element where carriers from the channel are injected, stored, or extracted via tunneling. When tested as a non-volatile memory, the devices exhibit a record memory window (>180 V), a high erase/write channel current ratio (104 ), good data retention, and high endurance (>104 cycles). The results here highlight a new memory device concept for application in large-area electronics, while the growth technique can potentially be exploited for the development of other optoelectronic devices including solar cells, photodetectors, and light-emitting diodes.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:33

Enthalten in:

Advanced materials (Deerfield Beach, Fla.) - 33(2021), 7 vom: 14. Feb., Seite e2003137

Sprache:

Englisch

Beteiligte Personen:

Gedda, Murali [VerfasserIn]
Yengel, Emre [VerfasserIn]
Faber, Hendrik [VerfasserIn]
Paulus, Fabian [VerfasserIn]
Kreß, Joshua A [VerfasserIn]
Tang, Ming-Chun [VerfasserIn]
Zhang, Siyuan [VerfasserIn]
Hacker, Christina A [VerfasserIn]
Kumar, Prashant [VerfasserIn]
Naphade, Dipti R [VerfasserIn]
Vaynzof, Yana [VerfasserIn]
Volonakis, George [VerfasserIn]
Giustino, Feliciano [VerfasserIn]
Anthopoulos, Thomas D [VerfasserIn]

Links:

Volltext

Themen:

Additive engineering
Floating-gate transistors
Journal Article
Non-volatile memory
Perovskite-organic blends
Two-dimensional perovskites

Anmerkungen:

Date Revised 17.02.2021

published: Print-Electronic

Citation Status PubMed-not-MEDLINE

doi:

10.1002/adma.202003137

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM319462145