Light-gated amorphous carbon memristors with indium-free transparent electrodes. (November 2019)

• Record Type: Journal Article
• Authors: Murdoch, B.J.; Raeber, T.J.; Zhao, Z.C.; Barlow, A.J.; McKenzie, D.R.; McCulloch, D.G.; Partridge, J.G.
• Is Part Of: Carbon. Volume 152(2019)
• Page Start: 59
• Page End: 65
• Publication Date: 2019-11
• Subjects: Resistive switching -- Carbon -- Neuromorphic computing -- Photonic synapse; Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2019.06.022
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: Amorphous carbon-based memristors with transparent conductive electrodes can be programmed both optically and electronically. We demonstrate neuromorphic logic and memory functions using light-gated amorphous carbon (a-C) memristors with indium-free transparent electrodes. The devices consist of insulating tetrahedral a-C layers with Pt top contacts supported on conductive zinc tin oxide electrodes with intentionally-oxygenated a-C interfaces. Resistive switching occurs by electron trapping/de-trapping, allowing low power, self-rectifying operation. Broadband light pulses evoke paired-pulse facilitation, emulating photonic coincidence detection. Coincidence detection was also achieved using heterogeneous optoelectronic inputs demonstrating dendritic computation at the single memory cell level. Graphical abstract: Image 1