期刊
RSC ADVANCES
卷 5, 期 1, 页码 221-230出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra09443c
关键词
-
资金
- Ministry of Knowledge Economy (MKE) of Korea
- Samsung Semiconductor Co.
To investigate the reproducibility and I-V non-linearity characteristics in resistive-switching random-access memory (RRAM), we studied the switching characteristics through Pt/TiO2 interface control using a non-stoichiometric TiO2-x/TiN interface formation in a resistive switching Pt/TiO2/TiN stack. Using the TiO2-x/TiN interface instead of the TiO2/TiN interface induced nearly forming-free switching, decreased the reset current, suppressed the gradual reset process, and resulted in faster switching by electric pulse. These results indicate that the Pt/TiO2 interface experienced reduced oxygen-vacancy-mediated switching. The discrepancy between the reduced oxygen-vacancy-mediated switching and the initially large number of oxygen vacancies can be resolved via the oxygen vacancy distribution dependent field effect. To clarify this process, we performed reaction-diffusion-drift model simulations. The drift velocity, which was calculated using the vacancy distribution, described the dynamic movement, and the simulation results supported the experimentally observed faster switching response. The field effect, which provided successive feedback between the drift velocity and vacancy distribution, can potentially be exploited to generate vacancy-designed devices.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据