Structurally Engineered Nanoporous Ta2O5-x Selector-Less Memristor for High Uniformity and Low Power Consumption
- Structurally Engineered Nanoporous Ta2O5-x Selector-Less Memristor for High Uniformity and Low Power Consumption
- 김태욱; 김남동; Soonbang Kwon; Seonghoon Jang; Jae-Hwang Lee; Yongsung Ji; Chul-Ho Lee; James M. Tour; Gunuk Wang
- memristor; metal-oxide; tantalum oxide; nonlinear switching; ultralow power consumption
- Issue Date
- ACS Applied Materials & Interfaces
- VOL 9, NO 39-34023
- A memristor architecture based on metal-oxide materials would have great promise in achieving exceptional energy efficiency and higher scalability in next-generation electronic memory systems. Here, we propose a facile method-for fabricating selector-less memristor arrays using an engineered nanoporous Ta2O5-x architecture. The device was fabricated in the form of crossbar arrays, and it functions as a switchable rectifier with a self-embedded nonlinear switching behavior and ultralow power consumption (similar to 2.7 X 10(-6) W), which results in effective suppression of crosstalk interference. In addition, we determined that the essential switching elements, such as the programming power, the sneak current, the nonlinearity value, and the device-to-device uniformity, could be enhanced by in-depth structural engineering of the pores in the Ta2O5-x layer. Our results, oil the basis of the structural .engineering of metal-oxide materials, could provide an attractive approach for fabricating simple and cost-efficient memristor. arrays with acceptable device, uniformity and low power consumption without the need for additional addressing selectors.
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