A facile approach to synthesize an oxo-functionalized graphene/polymer composite for low-voltage operating memory devices

Journal article
(Report)


Publication Details

Author(s): Wang Z, Eigler S, Ishii Y, Hu Y, Papp C, Lytken O, Steinrück HP, Halik M
Journal: Journal of Materials Chemistry C
Publisher: Royal Society of Chemistry
Publication year: 2015
Volume: 3
Journal issue: 33
Pages range: 8595-8604
ISSN: 2050-7526
Language: English


Abstract


Memory devices are a key technology of our era and one of the constant challenges is the reduction of their power consumption. Herein, we demonstrate that graphene oxide with very few defects, that is, about 1 nm thin oxo-functionalized graphene derivative, can be used in memory devices operating at 3 V. A memory device stores charges in the material of the active channel. Thereby, writing and erasing information can be performed at low voltage, facilitating low power consumption. To enable operation at low voltage, a novel synthetic approach is necessary. We find that the selective non-covalent electrostatic functionalization of mainly organosulfate ions is possible with dodecylammonium. This functionalization allows the non-covalent coating of flakes with a polystyrene-derivative as nm-thin dielectric medium. The resulting polymer-wrapped composite has a height of about 5 nm. We find that the thin coating of a few nm is mandatory to make the memory device work at low voltage. Furthermore, a self-assembled monolayer of an imidazolium derivative further enhances the function of the memory device. The prepared composite materials are characterized by state-of-the-art analysis including solid state nuclear magnetic resonance spectroscopy and thermogravimetric analysis coupled with gas chromatography, mass spectroscopy or infrared spectroscopy. Reference experiments prove the importance of the controlled synthesis to enable the function of the memory device.



FAU Authors / FAU Editors

Eigler, Siegfried Prof. Dr.
Lehrstuhl für Organische Chemie II
Halik, Marcus Prof. Dr.
Professur für Werkstoffwissenschaften (Polymerwerkstoffe)
Lytken, Ole
Lehrstuhl für Physikalische Chemie II
Papp, Christian PD Dr.
Lehrstuhl für Physikalische Chemie II
Steinrück, Hans-Peter Prof. Dr.
Lehrstuhl für Physikalische Chemie II
Wang, Zhenxing
Sonderforschungsbereich 953/2 Synthetische Kohlenstoffallotrope


Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials


External institutions
University of Illinois at Urbana-Champaign


How to cite

APA:
Wang, Z., Eigler, S., Ishii, Y., Hu, Y., Papp, C., Lytken, O.,... Halik, M. (2015). A facile approach to synthesize an oxo-functionalized graphene/polymer composite for low-voltage operating memory devices. Journal of Materials Chemistry C, 3(33), 8595-8604. https://dx.doi.org/10.1039/C5TC01861G

MLA:
Wang, Zhenxing, et al. "A facile approach to synthesize an oxo-functionalized graphene/polymer composite for low-voltage operating memory devices." Journal of Materials Chemistry C 3.33 (2015): 8595-8604.

BibTeX: 

Last updated on 2018-10-08 at 06:10