This work focuses on Au/HfO2/TiN nonvolatile resistive memory [ resistive random access memories (RRAMs)] stacks, where HfO2 is deposited by the atomic layer deposition technique on TiN electrodes. For as-grown RRAMs, no Reset is observed (the structure remains locked in a low resistive state). It is observed that an NH3 plasma treatment of the HfO2/TiN bilayer can restore a Reset stage. X-ray photoelectron spectroscopy analyses showed that the Reset recovery is related to a modification of the HfO2/TiN interface via transformation of the TiON interfacial layer. Thus, postdeposition plasma treatments of the oxide/ electrode interface are identified as a valuable tool to improve the switching properties of oxide-based RRAMs. (C) 2011 American Vacuum Society. [DOI: 10.1116/1.3599825]
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Laboratory of Nano-Fabrication and Novel Device Integrated Technology,Institute of Microelectronics, Chinese Academyof SciencesInstitute of Electronic and Information Project, Anhui University
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Sogang Univ, Dept Phys, Seoul 121742, South Korea
Sogang Univ, Interdisciplinary Program Integrated Biotechnol, Seoul 121742, South KoreaSogang Univ, Dept Phys, Seoul 121742, South Korea
Melikyan, Harutyun
Khishigbadrakh, Balt-Erdene
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Sogang Univ, Dept Phys, Seoul 121742, South Korea
Sogang Univ, Interdisciplinary Program Integrated Biotechnol, Seoul 121742, South KoreaSogang Univ, Dept Phys, Seoul 121742, South Korea
Khishigbadrakh, Balt-Erdene
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Babajanyan, Arsen
Lee, Kiejin
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Sogang Univ, Dept Phys, Seoul 121742, South Korea
Sogang Univ, Interdisciplinary Program Integrated Biotechnol, Seoul 121742, South KoreaSogang Univ, Dept Phys, Seoul 121742, South Korea
Lee, Kiejin
Choi, Ah-Reum
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Sogang Univ, Interdisciplinary Program Integrated Biotechnol, Seoul 121742, South Korea
Sogang Univ, Dept Life Sci, Seoul 121742, South KoreaSogang Univ, Dept Phys, Seoul 121742, South Korea
Choi, Ah-Reum
Lee, Jung-Ha
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Sogang Univ, Interdisciplinary Program Integrated Biotechnol, Seoul 121742, South Korea
Sogang Univ, Dept Life Sci, Seoul 121742, South KoreaSogang Univ, Dept Phys, Seoul 121742, South Korea
Lee, Jung-Ha
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Jung, Kwang-Hwan
Friedman, Barry
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Sam Houston State Univ, Dept Phys, Huntsville, TX 77341 USASogang Univ, Dept Phys, Seoul 121742, South Korea