Bipolar Resistive Switching Properties of Hf0.5 Zr0.5 O2 Thin Film for Flexible Memory Applications
| Autor: | Xingpeng Liu, Zhipeng Wu, Jun Zhu, Yunxia Zhou |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science business.industry 02 engineering and technology Surfaces and Interfaces Substrate (electronics) 021001 nanoscience & nanotechnology Condensed Matter Physics Thermal conduction 01 natural sciences Space charge Surfaces Coatings and Films Electronic Optical and Magnetic Materials Resistive random-access memory Electric field 0103 physical sciences Materials Chemistry Optoelectronics Electrical and Electronic Engineering Thin film 0210 nano-technology business Ohmic contact Electrical conductor |
| Zdroj: | physica status solidi (a). 215:1700396 |
| ISSN: | 1862-6300 |
| Popis: | An Au/Ni/Hf0.5Zr0.5O2/Au flexible memory device fabricated on a polyethylene terephthalate substrate was studied for flexible resistive random access memory applications. A typical bipolar resistive switching behavior was revealed with an OFF/ON ratio of approximately 15. The reproducibility and uniformity were investigated using 100 repetitive write/erase cycles. The retention property did not degrade for up to 5 × 104 s, and the resistive switching properties did not degrade even under bending conditions, which indicated good mechanical flexibility. The current–voltage characteristics of the memory device show a Poole–Frenkel emission conduction mechanism in the high-voltage region in the high-resistance state, while in the low-voltage region, the Ohmic contact and space charge limit current responded to the low-resistance state and high-resistance state, respectively. Combined with the conductance mechanism, the resistive switching behavior is attributed to conductive filaments forming and rupturing due to oxygen vacancies migrating under the external driving electric field. |
| Databáze: | OpenAIRE |
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