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Updated: Jan 23, 2026

Visible-light Induced Reduction of Graphene Oxide Using Plasmonic Nanoparticle
Published on: September 22, 2015
Light Driven Active Transition of Switching Modes in Homogeneous Oxides/Graphene Heterostructure
Xiaoli Chen1, Kelin Zeng2, Xin Zhu2
1Shenzhen Key Laboratory of Flexible Memory Materials and Devices College of Electronic Science and Technology Shenzhen University Shenzhen Guangdong 518060 P. R. China.
Abstract:
Depending on the mobile species involved in the resistive switching process, redox random access memories and conductive bridge random access memories are widely studied with distinct switching mechanisms. Although the two resistance switching types have faithfully proved to be electrochemically linked in metal oxide-based memristive devices, the corresponding photo-induced transition has not yet been realized. Here, a photo-induced transition through the integration of a graphene layer into a titanium oxide-based memory device is demonstrated. Coupled with Raman mapping and an electron energy loss spectroscopy technique, the photo-induced interaction at the heterostructure of graphene/titanium oxide are considered to dominate the transition process. Moreover, a negative differential resistance effect is observed by controlling the applied voltage, which can be credited to the saturation of trap centers (oxygen vacancies) and the increase of interfacial barrier at the graphene/titanium oxide heterojunction.
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