A comprehensive model for bipolar electrical switching of CuTCNQ memories
- 24 December 2007
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 91 (26), 263507
- https://doi.org/10.1063/1.2827590
Abstract
The generally observed bipolar electrical switching of \metal memories between two stable resistance states is shown to occur at the CuTCNQ\metal interface and not in the bulk of CuTCNQ. The switching is explained by a model involving electrochemical formation and dissolution of Cu filaments at the interface. In this mechanism, CuTCNQ acts as solid ionic conductor and source for the cations. The model also explains earlier reported findings of bipolar switching in CuTCNQ devices, including the apparently contradictory observation that neutral TCNQ appears in the low-resistance state.
Keywords
This publication has 23 references indexed in Scilit:
- Nonvolatile Memory Elements Based on Organic MaterialsAdvanced Materials, 2007
- Single‐Crystal Organic Nanowires of Copper–Tetracyanoquinodimethane: Synthesis, Patterning, Characterization, and Device ApplicationsAngewandte Chemie International Edition, 2007
- Electrical Properties of CuTCNQ Based Organic Memories Targeting Integration in the CMOS Back End-of-LineMRS Proceedings, 2007
- Preparation and characterisation of amorphous Cu:7,7,8,8-Tetracyanoquinodimethane thin films with low surface roughness via thermal co-depositionThin Solid Films, 2006
- New Charge-Transfer Salts for Reversible Resistive Memory SwitchingNano Letters, 2006
- Switching and filamentary conduction in non-volatile organic memoriesOrganic Electronics, 2006
- Synthesis of copper nanowires under a direct current electric fieldNanotechnology, 2005
- New Insight into the Nature of Cu(TCNQ): Solution Routes to Two Distinct Polymorphs and Their Relationship to Crystalline Films That Display Bistable Switching BehaviorInorganic Chemistry, 1998
- Characterization of Cu-CuTCNQ-M devices using scanning electron microscopy and scanning tunneling microscopyChemistry of Materials, 1993
- Switching and Memory Phenomena of Cu–TCNQ Thin Films Triggered by a Stimulus with an STM TipChemistry Letters, 1991