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 |
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Erscheinungsjahr: |
2021 |
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Erschienen: |
2021 |
Enthalten in: |
Zur Gesamtaufnahme - volume:33 |
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Enthalten in: |
Advanced materials (Deerfield Beach, Fla.) - 33(2021), 7 vom: 14. Feb., Seite e2003137 |
Sprache: |
Englisch |
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Beteiligte Personen: |
Gedda, Murali [VerfasserIn] |
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Links: |
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Themen: |
Additive engineering |
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Anmerkungen: |
Date Revised 17.02.2021 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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doi: |
10.1002/adma.202003137 |
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funding: |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLM319462145 |
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520 | |a 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 | ||
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700 | 1 | |a Yengel, Emre |e verfasserin |4 aut | |
700 | 1 | |a Faber, Hendrik |e verfasserin |4 aut | |
700 | 1 | |a Paulus, Fabian |e verfasserin |4 aut | |
700 | 1 | |a Kreß, Joshua A |e verfasserin |4 aut | |
700 | 1 | |a Tang, Ming-Chun |e verfasserin |4 aut | |
700 | 1 | |a Zhang, Siyuan |e verfasserin |4 aut | |
700 | 1 | |a Hacker, Christina A |e verfasserin |4 aut | |
700 | 1 | |a Kumar, Prashant |e verfasserin |4 aut | |
700 | 1 | |a Naphade, Dipti R |e verfasserin |4 aut | |
700 | 1 | |a Vaynzof, Yana |e verfasserin |4 aut | |
700 | 1 | |a Volonakis, George |e verfasserin |4 aut | |
700 | 1 | |a Giustino, Feliciano |e verfasserin |4 aut | |
700 | 1 | |a Anthopoulos, Thomas D |e verfasserin |4 aut | |
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