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- Title
High performance resistive switching memory organic films prepared through PPy growing on graphene oxide substrate.
- Authors
Li, Yongming; Ni, Xiuyuan; Ding, Shijin
- Abstract
In this study, the photochemical polymerization using graphene oxide (GO) as initiator generates a new composite film with polypyrrole (PPy) covering the GO nanosheets. The specular reflection infrared spectroscopy reveals the continuous upload of the conjugated polymers. Structures of the as-synthesized films are studied by using Raman and X-ray photoelectron spectroscopy with the aim of gaining an insight into the interface. The electronic properties of the composite films are investigated using solid-phase ultraviolet photoelectron spectroscopy. Fabricated from the synthesized film, the ITO/GO-PPy/Al device exhibits a nonvolatile rewritable memory with a reversible bistable resistance switching and the turn on voltage of 1.7 V. The ON/OFF current ratio reaches 10. Analyzing the current-voltage characteristics indicates that the ON-state charge transport follows Ohmic conduction, and the OFF-state charge transport is dominated by trap-limited space charge limited conduction.
- Subjects
GRAPHENE oxide; THIN films; POLYCYCLIC aromatic hydrocarbons; RAMAN spectroscopy; POLYPYRROLE
- Publication
Journal of Materials Science: Materials in Electronics, 2015, Vol 26, Issue 11, p9001
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-015-3583-1